Ateneo SOSE honors distinguished Physics students of 2017


The School of Science and Engineering (SOSE) of Ateneo de Manila University held a Recognition Program for Distinguished Students last 24 May 2017, 10:00 a.m., at the Leong Hall Auditorium. According to Dean Evangeline P. Bautista, PhD, the program was made to recognize the students who truly personifies the spirit of magis in the diverse fields of academics, research, leadership, competition, and sports. She hoped that these group of scientists, mathematicians, and engineers would be successful in their fields, so that they can help the country appreciate the value of science and engineering. Jaren Ryan M. Rex, BS Applied Physics with Applied Computer Systems and Magna Cum Laude, gave the response for Honor Students.

Below is the list of awardees from the Physics Department.


Paul Ivan B. Ceralde

  • BS Applied Physics with Materials Science and Engineering
  • EAGE Student Awardee, European Association of Geoscientists and Engineers (EAGE), Barcelona, Spain, September 2016
  • 3rd Place, Ateneo Team, national Collegiate Olympiad 2017, Materials Science and Engineering SUMMIT 2017, University of the Philippines

Jansen Keith L. Domoguen

  • BS Applied Physics with Materials Science and Engineering
  • APS Distinguished Student Awardee, American Physical Society (APS), Salt Lake City, Utah, April 2016
  • 3rd Place, Ateneo Team, national Collegiate Olympiad 2017, Materials Science and Engineering SUMMIT 2017, University of the Philippines

Jaren Ryan Rex

  • BS Applied Physics/BS Applied Computer Systems
  • Champion, Team Mobiuchsia
  • UP ACP Algolympics 2017 competitive programming contest, 11 February 2017 at UP Diliman
  • 1st Place, Team Mobius Trips, HPE Code Wars programming competition, 27 February 2017, HP Enterprise office, Eton Centris

Socorro Margarita T. Rodrigo

  • BS Physics
  • Best Student Oral Presentation/Best Student Paper award, 13th Philippine Association of Marine Science (PAMS) National Symposium on Marine Science, General Santos City, 22-24 October 2015
  • 2nd Prize, Undergraduate Basic Research
  • SOSE Outstanding Student Research awards, 2015-2016
  • Youth Delegate, Philippine Delegation, 21st Conference of the Parties (COP2), Paris, France, 30 November to 12 December 2017


Jomel U. Maroma

  • BS Physics
  • Vice President for Organization Strategies and Research, Executive Board (2016-2017)


League of Physicists

Paulo Gonda

  • BS Physics
  • Tesla House Head (2016-2017)
  • AVP for Human Resources (2013-2014)

Joseph Thomas Miclat

  • BS Physics
  • VP for Internal Affairs (2015-2016)
  • VP for Finance (2013-2014)

Kira Lok

  • BS Physics
  • VP for Marketing (2013-2014)

James Hernandez

  • BS Physics
  • VP for Academic Affairs (2014-2016)
  • AVP for Organizational Development (2013-2014)

Jaren Ryan M. Rex

  • BS Applied Physics/BS Applied Computer Systems
  • AVP for Academic Affairs, Services Manager (2013-2014)

Carlex Jose II

  • BS Physics
  • AVP for Internal Special Projects (2013-2014)

Christabel Bucao

  • BS Physics
  • AVP for Academic Affairs, Project Overseer (2013-2014)


Magna Cum Laude

Jaren Ryan M. Rex

  • BS Applied Physics/BS Applied Computer Systems

Cum Laude

Paul Ivan B. Ceralde

  • BS Applied Physics with Materials Science and Engineering

Jomel U. Maroma

  • BS Physics

Jansen Keith L. Domoguen

  • BS Applied Physics with Materials Science and Engineering


Department of Physics

Jaren Ryan M. Rex

  • BS Applied Physics

Novel Applications of Nanomaterials through Material Chemistry and Engineering: a talk by Dr. Joselito Razal of Deakin University

by Marienette M. Vega

The Department of Physics would like to invite you to a talk on the Novel Applications of Nanomaterials through Material Chemistry and Engineering by Dr. Joselito Razal Deputy Director, ARC Future Fibres Hub and Associate Professor, Institute for Frontier Materials, Deakin University, Australia to be held on 22 June 2017, Thursday, 2:30 pm to 4 pm at CTC 118.

Abstract. Material chemistry aims to engineer nanomaterials to perform novel functions that do not exist in its bulk form. With this engineering framework, nanomaterials have the potential to behave and function differently or more superior than that of conventional macroscopic materials. Recent efforts to implement engineering of surfaces or chemical structure and composition particularly of low-dimensional nanomaterials have provided evidences that this approach can facilitate the design and assembly of novel architectures into useful devices and cater for a wide range of applications in energy, catalysis, sensing, to name a few. In this talk, our recent efforts in developing nanomaterials with tailored properties and functions will be presented. In particular, an emphasis will be placed on our recent developments on two dimensional nanosheets with unique solution behaviour for advanced applications in energy storage and conversion.

About the Speaker. Joselito Razal (Joe) is the Deputy Director of the ARC Future Fibres Hub and an Associate Professor at the Institute for Frontier Materials, Deakin University. He is best known for his research on novel functional nanomaterials for flexible and wearable energy storage and energy harvesting applications. Joe developed the toughest synthetic fibres using carbon nanotubes during his PhD studies at the University of Texas at Dallas, which have led to the development of many types of strong and tough nanomaterial-based fibres. These fibres are also multi-functional. They can store and convert energy, and sense external stimuli such as movement and pressure. These fibres have the potential to be integrated into wearable devices, portable electronics, and smart textiles. More recently, he has studied other types of low-dimensional materials including graphene, for which he discovered that achieving large aspect ratio nanosheets allows for fine-tuning of solution behaviour. This discovery has direct implications on solution-based processing of novel 3D materials produced by 3D printing and fibre spinning technologies. This research has helped many other scientists take advantage of this unique behaviour to improve processability of many nanosheets. For his pioneering works, he was awarded a Future Fellowship by the Australian Research Council in 2013. Since then, he has been leading a team of research fellows and graduate students, and working with several industry partners alongside his collaborators in Australia and overseas.

Delay tolerant network front-end application for disaster risk reduction by Jherrielloyd Yao and Carlex Jose (BS APS-ACS)


Carlex Randolph Jose and Jherrielloyd Lourrenz Yao (BS APS-ACS) at Interlinks 13.0 last May 5, 2017. Their poster is entitled, “Design and implementation of a delay tolerant network front-end application for disaster risk reduction.”

by Ellice Dane Ancheta, Sunshine Indias, and Quirino Sugon Jr

Last 5 May 2017, BS Applied Physics / Applied Computer Systems students Jherrielloyd Lourrenz Yao and Carlex Randolph Jose presented a poster at Interlinks 13.0 on their research entitled, “Design and implementation of a delay tolerant network front-end application for disaster risk reduction,” which is one of the disaster-related projects of the Ateneo Innovation Center. In his Physics thesis last year, Yao worked on interpolation methods for rainfall data in Metro Manila under Dr. James Simpas, while Jose worked on volume holographic reconstruction of Bessel beams at multiple wavelengths under Dr. Raphael Guerrero.

Below is an interview with Jherrielloyd Yao and Carlex Jose by Ateneo Physics News.

1. How did you arrive in Ateneo?

Yao: I graduated from Philippine Science Central Visayas Campus in Cebu. I chose Ateneo because it is a top school. My choices were Ateneo and UP. I passed UPCAT but I had no course in UP. My chosen course there was Materials Engineering. My first choice of course in the Ateneo is also BS APS MSE (BS in Applied Physics / Material Science and Engineering). It was in second year that I chose ACS. So I shifted. I am more interested in programming and electronics. I felt that MSE is too heavy with Chemistry, which is not exactly my favorite.  I was inclined to take science courses. I had three choices, some of the major branches of science: biology, chemistry and physics. I chose physics because it is more general, with more applications. I think it offers more choices in the future in terms of jobs. Also there are more grad school courses I can pursue given a physics background.

Jose: I graduated from Philippine Science Eastern Visayas campus in Leyte. I took both the UP and Ateneo entrance exams. For both universities, I chose physics. I actually couldn’t decide confidently between UP and Ateneo. But Ateneo offered a 100% scholarship. So nothing against UP, but Ateneo is a better choice financially. That is why I am here. On physics, one of the factors is that the coolest people I look up to are our physics professors. So I had appreciation for physics already. Also, the topic seems more interesting by how rudimentary the whole thing is compared to the other sciences.

2. What was your physics thesis about?

Yao: My study was about interpolation methods for rainfall data in Metro Manila under Dr. James Simpas. The usual setup involves weather stations with rain gauges measuring rainfall in specific points on the map every five minutes. However, the dense network of weather station has a minimum radius of 5 km across stations, which leaves the points in between stations with no data. Interpolation methods aim to address the lack of data for a given study area by generating estimates at points with no weather station. Multiple studies have been conducted involving interpolation methods for other areas or countries with different conditions, climate, topography, etc. All of them conclude different results: no interpolation method will work well for all cases. I have assessed a few of the common interpolation methods for my thesis – Nearest Neighbor, Cubic, and Inverse Distance Weighting (IDW) – and I have evaluated the results through correlation and root mean squared errors. I have also developed an interpolation method which worked better than the ones mentioned earlier. It is a hybrid method combining IDW and Successive Over relaxation (SOR). SOR is an iterative approach commonly used to solve potentials in electromagnetics. With some modifications and integration with the IDW, it has been used to generate rainfall values on a map of Metro Manila.  

Jose: I worked with Bessel beams with the Photonics lab under Dr. Raphael Guerrero. My thesis is entitled “Volume Holographic Reconstruction of Bessel Beams at Multiple Wavelengths” Basically, what I did was I would store Bessel beams at  a specific wavelength in a Lithium Niobate Crystal. Lithium Niobate Crystal (LiNbO3:Fe) is a photorefractive crystal in nature. I have the holographic data stored using red light at 633 nm wavelength, while reconstruction was performed using three different wavelengths: 633, 612, and 604 nm. I have not published my paper yet. The big deal about Bessel beams is that it is an interesting topic. Bessel light beams have a property of being non-diffractive over a certain distance, unlike plane waves (which are also non-diffracting) and Gaussian waves that spread out. An ideal Bessel beam possesses a well-defined central spot surrounded by concentric ring. It should be non-diffractive over infinity, which means that the central core would remain the same, without expanding, over an infinite distance. A true Bessel beam is impossible to create, what we work instead with are beams that are Bessel-like, these beams possess Bessel properties over a distance. They are called Bessel-like beams because their central core barely widens over a particular distance. With that, they have a property of self-healing even with obstruction partially covering the beam. The beam has the capability restore itself. Using photorefractive crystals like LiNbO3 crystal is another way of storing memory. An advantage of using the LiNbO3 crystal is that it is capable of storing 100 bits/um^2. Unlike conventional optical and magnetic data where information is processed serially (bit by bit), holographic data is processed in parallel (by blocks of data) with the capability to cache and retrieve multiple information blocks simultaneously.

3. What was your Applied Computer Systems thesis?

For this project, we were operating under possible conditions of the aftermath of a disaster. There might be limited resources due to damaged infrastructure, cut power lines, and downtime of basic telecommunication services. Given this backdrop, what we did is to develop a system to enable responders to communicate effectively under these limitations of a disaster scenario (no 3G, internet, or signal). Our main goal is to enable efficient and reliable communication systems even without the infrastructures we usually rely on for this purpose. We want to make it possible for responders to have a communication system which can assist them in sending images, audio clips, text messages, among other features that speed up the process of sending necessary information they might need in responding to the situation. That is the gist of the problem.

What we developed is an application that would implement the DTN (Delay tolerant network) system. Basically, DTN is a bundle transmission system where you do not have to wait for a secure line to send the message across. There is no end-to-end communication that is required. This transmission is unlike phone calls, wherein the phone call actually starts only if both ends have to acknowledge that they are ready to take the call. For the DTN, you are just sending information out whenever you have a chance and hope it gets to its destination. This is good in disaster scenarios because responders are moving dynamically and conducting operations always. It could be messy. For example, 20 people moving independently from one another are contained in a zone as in a protocol during disaster. With each DTN, each one of those 20 people can take information or data from their phones, and contact other responders when needed. Information is gathered in each device and bumping will occur as two phones meet. The exchange of information happens by mere proximity, by using their adhoc wifi capability. Most smartphones have the capability to set up its own network or “hotspot”. If the phones are close enough, they share information they gathered. For example, information can go from my phone to your phone and on to other phones until it reaches the phone that collects all the data in the zone. The phone that collects all the data in the zone is called an aggregator. Over time, as enough information is collected, a passing data ferry (VHub or UAV) along the zone can take that information and transmit it further. Its eventual destination will be in mission control, where decisions and instructions can be sent out to responders.

The mission control is the backbone wherein all information is sent and processed to assess disaster management, the other team–Dane Ancheta’s team–is working on this. Our work is more focused on those responders in the field. The responders then will be working with an application for communication and information sharing without the use of internet, but using the adhoc wifi instead.

4. What programming languages did you use?

For this project we used Android Java. The Delay Tolerant Network (DTN) part is the starting point and the foundation of our work. We started with IBR-DTN (developed by Institut für Betriebssysteme und Rechnerverbund), an existing application which we used for this purpose. What we did is we started from this application and modified it to suit our needs. Originally, what the application can do was send audio messages. We added several capabilities and functions to this, such as image sending, text messages, and appending text information to the image in Exif (Exchangeable image file format) file. Metadata such as GPS and notes are stored in this Exif file. Local face detection was also added on the app. This local face detection lessens the delay and work of the mission control group. This is possible because images taken on the field is immediately processed by the face detection capability, therefore, it does not have to spend time being sent and processed by mission control. Other functions include GPS and radio frequency module capability because the data ferry (the UAV) would pass by the zone, and get the information from the aggregator node. The communication is done in the 760MHz bandwidth, however we are exploring using 915 MHz. The team also wants to explore using LoRa (long range) communication for this purpose because this allows for the transmission of information farther distance in the kilometers range. However the trade-off for reaching a farther distance is that it will have a weaker transmission rate.

5. How did you choose your topic?

This project was already initiated and worked upon before we came in the lab. There have been a lot of collaborations and planning with external groups outside Ateneo, such as Toyota InfoTech Japan and some sectors in the government, as far as we know. This thesis is a part of the bigger project of the Ateneo Innovations Center (AIC) which is the Multi-Platform ICT Decision Support System UAVs, Vehicle Hubs, Ubiquitous Computing for Disaster Risk Reduction. We are just contributing to this bigger project. While our team is working on communication for the field responders, Dane and her team are working on mission control, receiving and processing all the data aggregated to them. There is also another group working on data ferries, which makes use of the UAV (Unmanned Aerial Vehicle). It is easier to use UAV for disaster scenarios as it is easier for it to go from place to place. There is also another group that works on flight simulation for the UAV flights.  

6. How are projects done in Ateneo Innovation Center?

There are many small tasks for all of the researchers. Working in the lab, especially in big active labs such as the Ateneo Innovations Center (AIC), requires a lot of collaboration and contribution from each one. A lot of our work intersects with the other group. Some results are based on their findings and the other way around. In a way, we are one big group, but each of us have our own focus. Other than the actual project itself, there were little side quests or tasks that we had to do. Eventually these small tasks would add up and contribute a great deal to the project.

7. What were some of the difficulties you encountered while working on your thesis?

Yao: It was difficult to shift from physics to communications. We had to learn by doing. There were expected outputs, and we had to learn how to do it on the spot. For example, we had to learn Android for our thesis which we started working on for the first semester. However, Android programming is offered in the second semester. We had to do a lot of research and reading. We try to understand and study existing apps because we could use some of the information for our thesis. We are given a shorter time for the ACS subjects and even the thesis is done in 2 semesters–part of which is our integration to the lab.

Jose: To be honest, the bulk of the work is programming, like we have to design the concept and  use-cases. My work there is objective: it involves coming up with a plan of action on how to solve it. We are designing a system and we have the available technology. We know what devices or software we want to use. The objective there is to make everything work together or how to make everything function properly–that is the aspect which is more physics-related. After that you, sit down and code for hours or days or months. Every time that here is something the team wishes to add, you have to adjust everything again.

8. Where do you go from here?

Jose: For our research in the Ateneo Innovations Center (AIC), we are sure that there will be people in AIC who will continue it, considering that there is a long term vision for this work. As for myself, I am not sure yet whether I will continue studying such as taking up a Master’s degree or PhD. But I  have also been looking at employment offers. I feel both are equally interesting. It is difficult to separate physics from the IT stuff.  You can think of it (IT) as being deeply in the physics realm as well. Unless it is hardcore programming, but even then, it is fun for me or challenging enough for me. So far I had taken an exam and an interview for work. There is no transaction yet.

Yao: I am really not sure. Perhaps I will work for a while then study further. Regarding the study, I am interested in the Toyota Motor Philippines School of Technology (TMP Tech). They have a school and it is in house meaning you could live there. I find it interesting because I like to tinker with stuff. Although I have not explored cars, I actually don’t know anything about cars but I want to build stuff.  With that in mind, I am also interested in Aeronautics–if not, robotics, but it is heavy on engineering. I still lack the knowledge. Definitely I am sure I will do Masters.  I am not sure what course yet but it will have to be related to physics or ACS.

9. How do you feel about being the last ACS batch?*

Jose: I shifted from pure physics to applied physics with computer systems. The department should rethink freezing ACS and bring it back because there might be students, like me, who will want to shift into the course.

Yao: I think the ACS track is a good course. It is a good combination because it incorporates programming, engineering and communications to complement our background in physics. I don’t know why they removed it. We shifted to ACS from other courses in physics.

*(Note: Though the Physics Department has not offered the BS APS/ACS program for two years, it still exists in Registrar’s records. The Physics and Chemistry Departments may revive the ACS program soon. BS APS/ACS is a rebranding of the BS Physics with Computer Engineering (BS PS/CE) which started in 1985.)

10. Do you have any parting words or advice?

Jose: Well as for advice, I feel like it would be reckless if I speak and I invoke my 5th amendment right (“right to remain silent”). All I can say is, “You do you.” Do what you think is best. There is no one course of action in or after college. I have seen people prosper in doing things I would advice otherwise. I don’t doubt my decisions but I might take it back at some point. Well, let’s see. It is difficult to advice because you can’t really say if it is going to be a success story. It might be too early to speak.

Yao: Pursue your dreams. We are proud to have earned our degrees because it is a proof of what we have learned in college for the last five years. It means that we are out to start a new phase in life. 


In a disaster area, the DTN responders are grouped by zones and are connected by the adhoc wifi network. For each zones (green areas) there are responders limited by proximity. The red circles are the data aggregators. The blue dots are the responders on the ground doing their task, linked to each other by the adhoc. Each zone will have a leader. The leader will make decisions on where to go and when to dispatch instructions to the team. In this context, the work assigned to the leader is to be the aggregator to collect information. The aggregator entails having the RF module connected to the android phone, which will collect information from phones and responders to pass it on to incoming data ferries (UAV). Through this process of receiving and sending information, there will be links to other DTN groups in other zones, and lastly the information on the group through the bumping of data, will eventually reach mission control.

Decision support system using near cloud for disaster and risk management: an interview with Dane Ancheta (BS APS-ACS 2017)


“Design and development of decision support system using near cloud for disaster management and risk reduction” by E. D. Ancheta (right), J. A. Dela Cruz, and A. J. Domingo. Advisory committee: N. Libatique, PhD, G. Tangonan, PhD, D. Solpico, and D. Lagazo. Department of Electronics, Computer and Communications Engineering, Ateneo de Manila University.  Interlinks 13.0 was held last 5 May 2015, 1:00-5:00 p.m., at Convergent Technologies Center (CTC) Rm 413.

by Dane Ancheta and Quirino Sugon Jr

Dane Ancheta is a graduating student of BS Applied Physics and Applied Computer Systems (BS APS-ACS) of the Ateneo de Manila University and is one of the four last BS APS-ACS majors taking this course. After graduating High School from Ateneo de Zamboanga University in 2012, she went on to Ateneo de Manila University on a 100% financial aid scholarship, and a DOST merit scholarship. She worked at Manila Observatory (MO) for her physics thesis entitled “Temporal variability of localized rainfall events in metro manila over 2 years (2013-2014).” She also worked in Ateneo Innovations Center (AIC) for her Applied Computer Systems (ACS) thesis entitled “Design and development of decision support system using near cloud for disaster management and risk reduction.” Her co-workers are April Domingo (BS Computer Engineering) and Jane Dela Cruz (BS Electronics and Communications Engineering). They presented a poster of their work last 5 May 2017 at Interlinks 13.0, an annual research poster exhibition organized by the Ateneo Innovation Center for the School of Science and Engineering (SOSE) of Ateneo de Manila University. The abstract of their poster reads as follows:

In disaster scenarios, the lack of wireless internet or weak cellular network signal poses a very real threat to crucial information gathering and sharing. Using Near Cloud to store, load and upload information, this project has designed and developed decision support nodes that is able to to gather and distribute intelligent information before, during, and after disasters. These nodes are cached in with key information and data needed for disasters, i.e. maps, message reports, and images. The nodes serve as the command and control in early warning and disaster management systems. Key capabilities featured in for the decision support node include: broadcast mode that is broadcasting message via RF, mapping and visualization, data mining, near cloud, and the medical decision support system. A decision support node architecture is then developed and proposed as the main command and control as mobile kiosks. This mobile kiosk architecture is developed with a number of Raspberry Pi 3‘s, each of which are connected to perform and handle one application in a grid pattern.

Below is an interview with Dane Ancheta by Ateneo Physics News:

1. Why did you choose physics?

I could not imagine myself not taking physics.  I chose physics in all colleges that I applied. I don’t want to live my life wondering, “What if I had taken physics?”  

I love science. When I was a little girl, I would watch National Geographic. I’m naturally inquisitive. My teachers were great and supportive, but it was generally my curiosity that drove me to take physics.

2. Can you tell us about your your physics thesis?

I worked at the Manila Observatory for my thesis entitled “Temporal variability of localized rainfall events in metro manila over 2 years (2013-2014)”. My thesis adviser is Dr. James Simpas and Ma’am Genie Lorenzo. The data comes from the, at the time, newly installed dense network of weather stations around Metro Manila. For my thesis, I used at around 24 stations that are at a 5 km radius apart each. Basically, what I did was characterize localized rain events such as thunderstorms and precipitation; bigger events such as monsoons and typhoons are not included. We found out that the most amount of rainfall is experienced in Tayuman, Manila, though Makati City and Quezon City also experience high amounts of rainfall. The probability of rainfall is highest in middle and western Metro Manila, while it is lowest in southeastern Metro Manila. The study characterizes for the first time the areas of likelihood, rainfall and temporal correlation for the localized rain events in Metro Manila. It does not, however, explain such behavior, so we are still looking for an explanation  This work will definitely be continued or taken over.

For this thesis, all data were being sent to Manila Observatory. It is hard work to make sure that the data we are preparing are usable. We don’t get the data “clean”, that is why we have to check if they are healthy or anomalous. The data come from the weather stations that are exposed to the elements. But I did not have to go out as data from these stations were directly received by MO. I used QGIS and a little Python. I had learned many things working on this project.  This August 2017, we shall go to Singapore for the Asia Oceania Geoscience Society ( AOGS) conference. I shall present a poster of my physics thesis there. A good number from the research team is going because we have both the AQD-ITD (Air Quality DynamicsInstrumentation and Technology Development under Dr. Obiminda Cambaliza and Dr. James Simpas) and RCS (Regional Climate Systems under Dr. Narisma) researchers presenting.

3. Can you tell us about our Applied Computer Systems thesis?

In our 5th year, we start working on our ACS thesis under a thesis group with the ECCE (Electronics, Computer, and Communications Engineering) Department. I got involved in Ateneo Innovation Center where I became part of a big research team. On-going projects were laid out and discussed for us. The bigger research team is currently working on Multi-platform ICT Decision Support System UAVs , Vehicle Hubs, Ubiquitous Computing for Disaster Risk Reduction. We settled on the mission control end of the system. There are three of us in the thesis group- April Domingo is from CoE (Computer Engineering) and Jane Dela Cruz is from ECE (Electronics and Communications Engineering). Basically what we do is we receive all information from the responders and UAVs, and develop a system for this flow of information.

In the event of a disaster scenario, communication lines may be cut off due to damages to infrastructure, making information sharing difficult. Information that may be crucial for damage assessment and rescue operation would be lost or would not be transmitted effectively. In the research, we used the near cloud to store, load and upload information, this project has designed and developed decision support nodes that is able to gather and distribute intelligent information before, during, and after disasters.

We built upon the thesis of those who worked on near cloud before us. The previous team used Ionics plug computer, however, since this product was discontinued, we decided to make our own near cloud using Raspberry Pi 3 and terabyte hard drives. Our architecture is as follows: there is a raspberry pi node which serves as a serve/gateway. All other Raspberry Pi units with their corresponding applications are connected to this node. The architecture itself is an enabler: it enables all the applications to run in the same network.

The system also has near cloud capabilities. It acts as a cloud storage, but for a local network. This is done by configuring a Raspberry Pi for hotspot capabilities, while connecting the terabyte hard drive storage to it. Therefore, anyone can connect to the Raspberry Pi network and access all the files stored in the hard drive. Devices such as phones and laptops can access, download or upload (with permissions) files into the hard drive through this network as long as they are connected to the hotspot. The system also has drop box capabilities. This technology will be useful in evacuation centers. Given that communication lines could be cut off and there might not be enough power, it is hard to get information through. But the Raspberry Pi is low maintenance and low power, but powerful enough to make information available for access via the preloaded data in the hard drive. We tried to test this system by connecting about 10 devices, and it can work well in accessing files and streaming videos.

Another capability is our war room display with multiple screens where the interface is shown. This is how it works: responders and UAVs are on the ground send data to the mission control. The communication is done by radio frequency module at 900 MHz, which reach about 5km point to point without walls. If the messages from a responder is being sent, the message will be relayed to the different phones until it reaches mission control. For the responders sending a message to the mission control, the message and location of the responder will show up in the Google Maps API, so it will be easier to visualize where the responders are. This is how information will be received and instructions will be sent out from the mission control.

The most difficult part of the thesis are the times we have to learn the language then and there. We try to solve problems not encountered in class. We used a lot of different languages for different functions, such as C#, HTML, PHP and mySQL. We used Raspbian for the Raspberry pi the Windows 10 IoT (Internet of Things) core, Visual Studio for the interface, PHP for the chatroom, and Google API for the mapping. We have to learn using internet and the kindness of people.

4. Were you under a scholarship?

I am a Financial Aid scholar. Our kind benefactor is a BS APS-CE (Applied Physics / Computer Engineering) graduate and he gives scholarships to students who are pursuing the same course. I am lucky to have a benefactor like that who is passionate about supporting students interested in physics.

I am also a DOST scholar ever since sophomore year. So that makes three or four years. My failure in one class did not impact my scholarship that bad. It had to be put on hold for a time until I passed, but I did eventually get it back. The failure in that class is just a bump. I did study and did well in my other classes, so I did not feel like I was in danger. My QPI was 2.89 even with the failed class. I survived.

5. What are your plans for the future?

I am not sure yet if I want to take engineering or masters. I am thinking of going to China to do my masters, but I still have to consider the requirements, e.g. fixing papers and submissions. I am very nervous, since it is really an open field.  There is no one direct path to go to. There is so much freedom to choose from. So I have not decided yet on what to do.

6. Any parting words to our Physics majors?

The most difficult part of being a BS Physics/Computer Engineering major is the rigor that comes into the work. It is both a difficulty and a blessing. Not everybody undergoes that kind of rigor that is required of physics. We had to learn a lot: even failure is a learning process. I learned to shift focus from just getting good grades to learning something and growing in the course. I did fail one class: Electromagnetics. I try to look on the bright side and say it was not that bad because it pushed me to do better in my studies.

Physics and Computer systems go very well together. As a physicist, it is really important to work with computers and use them for your advantage. It was sad that the course had to be discontinued. We do learn to program using C++ in PS 130 Computational Physics; however I think it is not enough programming for physics. Even if the course does create excellent and competent students, after college they get into web develop or work in IT related fields. Now, there’s no ACS. It is a shame. Programming is so useful.  In today’s age, if you can program, you can hold the world on a string.

Stay curious. Be inquisitive. Never stop asking questions.



PhD Physics Dissertation Defense: Fluid-enhanced tunable diffraction with elastomer grating by Caironesa Pada


The Department of Physics of Ateneo de Manila University cordially invites you to a Physics Dissertation Defense:

  • Student name: Caironesa Pada
  • Schedule and venue: 10 May 2017, 4 PM, F-106


  • Dr. Raphael A. Guerrero (Physics), Dissertation Adviser
  • Dr. Percival F. Almoro (UPD), Dissertation Examiner
  • Dr. James Bernard Simpas (Physics), Dissertation Examiner
  • Dr. Maria Obiminda Cambaliza (Physics), Dissertation Reader
  • Dr. Christian Lorenz Mahinay (Physics), Dissertation Reader


A tunable diffraction grating shows promise in applications from beam steering to spectroscopy due to the versatility of its design. A diffraction grating made of polydimethylsiloxane (PDMS) is replicated using simple soft lithography. Tunable diffraction is accomplished by modifying groove spacing through the application of strain on the elastomeric grating replica. The range of strain-variable diffraction angles is extended by adding a refracting liquid layer to the grating. The scanning of the 1st-order diffraction angles as the grating pitch is tuned is demonstrated when the grating operates in transmission and reflection mode. In transmission mode, using a water layer, the diffraction angle is tuned from 38o to 33.4o with an applied strain of 17.7%. With an equal amount of strain, adding a glycerol layer results in the diffraction angle varying from 38.8o to 34.4o. When the grating operates in reflection mode, with a water layer, effective diffraction angle is 24.85o with 8.86% strain. This is equivalent to the output at an applied mechanical strain of 12.8% of an unmodified grating. The addition of glycerol as a refracting element to the tunable grating yields 27.8o with an applied strain of 8.86%. Without glycerol, this angle can be achieved at a strain level of approximately 14.76%. The addition of liquid layer proves an efficient way to extend the range of the 1st-order diffraction output. The experimental results are accurately described by the combined effects of diffraction by a deformable grating and refraction by a fluid with a curved surface.