Sayak Biswas

What year are you in?

Third year

What group are you in?
Randeria Group

Where are you from?

Kolkata, India

Describe your research in 200 words or fewer.

The phenomenon of superconductivity fascinates me. One might ask what’s new in that as people have been studying it since 1911.  New platforms like flat band and topological superconductors present a host of new possibilities. In flat band materials like twisted bilayer graphene, kinetic energy of electrons is almost entirely quenched, and the physics is dominated by interactions, giving rise to a plethora of exotic quantum phases of matter including superconductivity. On the other hand, topological superconductors can host charge neutral Majorana zero modes which can be used to do quantum computation. As a theorist I try to understand these new platforms and phases of matter and predict new outcomes.

What have you done in physics that you’re proud of?

I haven’t yet done anything to be proud of. Recently we have come up with a connection between pairing symmetry, which is one of the most fundamental characterizations of a superconductor, and the topological properties that it might have. This mathematical connection might help us learn about the pairing symmetry when some topological property is observed in an experiment. I also feel rather good about the work that I did for my masters’ thesis where we showed how an impurity inside a “quantum droplet” of a Bose-Einstein condensate would form a bound state.

What have you done outside of physics that you are proud of?

I am a music enthusiast and have been part of an organization that promoted Indian classical music among young people by hosting concerts by eminent musicians which students could attend for free. It was overwhelming to see how people developed keen interest and deep love for this genre once they were exposed to it. For some of these people it has even been a life changing experience. I am proud to have been a part of something that had such a positive influence on people.

What are your future goals?

Really long-term goal would be to contribute to some meaningful research. A decent short-term goal would be to graduate. Everything else lies in between!

Melanie Zaidel

What year are you in?

I’m in my second year.

What group are you in?

I’m in John Beacom’s particle astrophysics group.

Where are you from?

I’m from “the sweetest place on Earth”, Hershey, Pennsylvania.

Describe your research in 200 words or fewer.

The high-energy universe holds the secrets to understanding cataclysmic astronomical events, the origins of the most energetic particles, and even undiscovered physics. Exploring these areas of astrophysics involves understanding the production, behavior, propagation, and detection of different kinds of particles (messengers).  As such, physicists and astronomers up and down the electromagnetic spectrum collaborate with neutrino, cosmic ray, and gravitational wave astronomers to understand the highest energy processes in the universe.

I’m most interested in applying microscopic particle physics to understand macroscopic astrophysical systems, especially through multi-messenger methods. Whether it be exploring neutrino astronomy, modeling gamma-ray bursts, or probing particle dark matter as in my undergraduate studies at Penn State, I am excited to learn about the universe through an astroparticle physics phenomenology lens.

Here at OSU, I’ve so far been reading books and papers to gain a deeper understanding of electromagnetic emission processes, cosmic ray physics, and astrophysical particle accelerators like pulsars and supernova remnants. Currently, I’m looking into a project on using solar neutrinos to study the structure of the Sun.

What have you done in physics that you are proud of?

While I am proud of my undergraduate research work and all that I have been learning as a graduate student, I have recently discovered a passion for mentoring. This past summer, I worked with other grad students on the Undergraduate Residential Summer Access (URSA) program within Polaris. This program is within the Physics and Astronomy departments at OSU and is intended to encourage cohort-building among historically underrepresented students within these departments.

During the summer, my fellow grad students and I developed several hour-long accessible and interactive lessons on various topics in physics and astronomy, including Newton’s laws, impostor syndrome, order of magnitude calculations, Python programming, and particle dark matter. Two weeks prior to the start of the fall semester, we introduced a group of incoming first-year undergraduate students to the campus, explored academic and social topics, and led them through a mini research project. This entire experience was incredibly rewarding, and working with and teaching students has deeply inspired me to make mentoring a priority in my professional life. I currently closely mentor Heidi G. and Caleb R., two undergraduate students in the Polaris mentorship course, as well as serve as an informal teacher for undergraduate students interested in particle physics and astrophysics.

What have you done outside of physics that you are proud of?

Over the last year and a half or so, I’ve gone through many life changes including graduating from undergrad, moving to Columbus, starting grad school, and taking time to learn about myself and my mental health. I’m proud of how much I have changed, all I’ve learned about myself, and the person I’m growing into. I’m also extremely proud of my relationship with my partner Kaylee who I have seen flourish at her personal hobbies and new job. Most recently, I’ve been trying out painting and am proud at the progress I’ve been making.

What are your future goals?

During my time at OSU, I hope to explore additional mentoring opportunities in astro/physics, including mentoring students on research projects and being more involved in Polaris. I’m also very excited to dive into research and explore many different topics in astroparticle physics. After graduating, I am considering research positions at national labs and pursuing a career as a professor.

Contact info:

Email: zaidel.3@osu.edu
Website: https://u.osu.edu/mzaidel/

Francisco Ayala Rodriguez

What year are you in?

I am in my fifth year.

What group are you in?

Prof. Chris Hammel’s group.

Where are you from?

I am originally from Ciudad Juárez, Mexico.

Describe your research in 200 words or fewer.

Understanding the magnetic properties and dynamics of novel materials is essential for further applications in high-density information storage. My research in the Hammel Group involves studying these properties through use of cantilever magnetometry and optical detection of magnetic dynamics via NV color centers.

Cantilever magnetometry consists of attaching a micron-sized magnetic sample to a cantilever’s free end, which is then used as a harmonic oscillator. In the presence of an external field, the sample’s magnetic moment will exert a torque in the cantilever. Sweeping the external field then results in a frequency shift from which hysteretic behaviors and magnetic properties can be studied.

Optical detection of magnetic dynamics is done using photoluminescent diamond defects called NV centers, which are sensitive to magnetic fields. Alternating fields from the sample at resonance with the NV centers will cause a decrease in the measured photoluminescence. By placing NV centers at a sample’s surface and exciting magnetic dynamics, this change in photoluminescence can be used to study and understand magnetic dynamics in novel magnetic materials.

What have you done in physics that you are proud of?

Having the opportunity to pursue a PhD at OSU and passing candidacy made me feel very proud. All the work I did in undergrad made sense once I started my graduate studies. Similarly, I was going through all the classes and homework in the first two years, and passing the candidacy exam seemed a concrete proof of progress.

What have you done outside of physics that you are proud of?

For various reasons, I lived at home during my undergraduate years, so right now is my first time living independently away from my family. Living alone for the first time is tough, especially when it is a ~6-hour plane flight from home. But I am proud of my personal growth these last few years, which could only be gained by living independently.

What are your future goals?

Definitely graduating. Also, if the paper we are working on right now results in a publication, that would be amazing!!