The Nano-Bio Team

Summer 2024

Ruby Sullan

Principal Investigator

Ruby is a biophysical chemist whose research focuses on bacteria–surface and nanomaterial–bio interactions, with applications in antimicrobial materials, biofilm control, and plant–microbe systems. She earned her BSc in Chemistry from the University of the Philippines and her PhD in Chemistry from the University of Toronto, working in Gilbert Walker’s Biointerfaces group. Before joining UTSC, Ruby trained at the National Research Council Canada with Shan Zou, JILA/CU-Boulder with Tom Perkins, UCL Belgium with Yves Dufrêne as a Marcel De Merre Fellow, and the Max Planck Institute in Germany with Kerstin Blank as an Alexander von Humboldt Fellow. Across these roles, she studied model membranes, DNA, proteins, and bacterial adhesion using force-based approaches.

Ruby was named a Cottrell Scholar in 2021. Outside research and teaching, she enjoys Toronto’s multicultural and vibrant community.

 

Dr. Nesha Andoy

Research Associate

Nesha did her PhD at Cornell University, working on single-molecule biophysics and single nanoparticle catalysis. She then moved to Harvard Medical School to study in vitro reconstitutions of clathrin-coated vesicles. Prior to joining the Nano(materials)-Bio Interactions lab, she worked with BioMedX and Roche Diagnostics in Heidelberg, Germany, where she was part of the Nanomaterial-based Biosensor group, developing electronic sensors for Point-of-Care applications. In her spare time, she enjoys reading, cycling, as well as playing the guitar and banduria. She also enjoys exploring the different cuisines in Toronto neighbourhoods.

 

GRADUATE STUDENTS

Anna Galang

PhD student in Chemistry

Xiao Chen

MSc student in Chemistry | Ontario Graduate Scholarship Recipient

Anna is a PhD Chemistry student. For her undergraduate honors thesis, she studied the interfacial and nanoscale properties of polymer films and nanoparticles. Her current project is exploring the antimicrobial ability of polydopamine systems and how it affects bacteria. Aside from research, she enjoys the outdoors and reading.

Xiao is a Master’s student in Chemistry and a recipient of the Ontario Graduate Scholarship (OGS). His research focuses on developing and applying microfluidic platforms for the real-time monitoring of plant root–bacteria interactions, with the goal of uncovering the physicochemical and hydrodynamic factors that shape microbial colonization in the rhizosphere. Outside of the lab, Xiao enjoys listening to R&B music and staying active through badminton.

 

Franklin Perez

PhD student in Environmental Science

Franklin completed a Master of Environmental Science at UTSC. Currently, he is looking into the ability of antimicrobial nanospheres to disrupt E. coli biofilms. Franklin is interested in understanding the nanoscale properties, of both bacteria and the surface, in relation to plastic-associated biofilms. Aside from research, Franklin enjoys volunteering, physical activity, art, GSAS and watching good movies.

Yilei Xue

PhD student in Chemistry
(co-supervised w/ Kagan Kerman)

Yilei completed her Master of Chemistry at Hong Kong University of Science and Technology with Professor Nagl. She worked on analyzing the antibacterial property of films on a digital microfluidic device coupled with an oxygen sensor layer. Currently, she is working on studying the interaction between biofilms and materials engaged in microbial fuel cell projects. In her spare time, she enjoys petting cats and watching movies.

 

Poh Ying Fong

PhD student in Environmental Science

Benjamin Moorehead

MSc student in Chemistry (co-supervised by Xiao-an Zhang)

Poh Ying (Shirley) completed her Master of Chemistry at Concordia University with Professor Louis Cuccia. She investigated the coordination polymerization of homochiral and racemic copper aspartate, as well as the spatiotemporal resolution of racemic copper aspartate using tailor-made additives in a reaction–diffusion framework. Currently, she is working on bacterial rigidity sensing, focusing on how key adhesion mechanisms shape bacterial attachment on soft and stiff substrates. In parallel, she studies true-to-life nanoplastic–bacteria interactions, with the goal of understanding how rhizobacteria regulate nanoplastic immobilization and organization at their surfaces. In her spare time, she enjoys listening to music and gardening.

Ben is a Master's student in chemistry, co-supervised with the Zhang Lab. He completed his BSc in chemistry at Dalhousie University, where his honours research focused on tuning the gelation kinetics of hydrogels. He is currently developing boronic acid-substituted porphyrins as multimodule imaging probes for targeting bacterial biofilms. Outside of the lab, he enjoys running, swimming, and watching movies.

 

UNDERGRADUATE STUDENTS

Rachel Ye

Undergraduate Student

Rachel is a fourth-year student pursuing a double major in biochemistry and molecular biology. She joined the team through a PSCB90 project in Winter 2024, where she investigated nanoparticle disassembly using amino acids. She is now exploring the use of nanoparticles for agricultural applications through CHMD90. Outside of the lab, Rachel enjoys listening to music, thrifting, and having KBBQ with friends.

Kendrick Gementiza

Undergraduate Student

Kendrick is a fourth-year student specializing in Chemistry. He joined the group through a CHMD90 project in Winter 2026, where she he is currently investigating interactions between nanoplastics and soil microbes. In his free time, he enjoys solving sudoku puzzles, catching up on movies, and watching sitcoms.

 

Afrah Enam

Undergraduate Student

Amanda Muthalakuzhiyil

Undergraduate Student

Afrah is a fourth-year student majoring in Chemistry with minors in Environmental Science and Applied Climatology. She joined the team through a PSCB90 project in Fall 2025, where she investigated the metal adsorption of polydopamine nanoparticles quantified by flame atomic absorption spectroscopy. She is currently continuing this research through CHMD90, examining the metal loading capacity of ultra-small polydopamine nanoparticles for agricultural applications. Her work focuses on fortifying plant growth by loading micronutrients onto nanoparticles and enabling their controlled release to support plant development. Outside of research, she enjoys reading, good food and spending time with friends and family.

Amanda is a fourth-year undergraduate student double majoring in Chemistry and English. She joined the research team in Winter 2026 to investigate the viability and coating of Pseudomonas defensor using ultrasmall polydopamine nanoparticles. Currently, her work focuses on the high-resolution characterization of polydopamine coatings applied to plant growth-promoting bacteria. Outside of her research, Amanda enjoys exploring the city, bingeing her favourite movies, and spending time with family and friends.

 

Christopher Cha

Undergraduate Student

Christopher is a fourth-year student majoring in biochemistry and molecular biology. He joined the team through a PSCB90 project in Fall 2025, where he investigated 4-methylluferone release from polydopamine-metal nanoparticles. He is currently continuing this research through CHMD90, examining the antibiofilm applications of a polydopamine-copper 4-methylluferone on Streptococcus epidermidis. Outside of research, he enjoys reading, running, gardening and spending time with his grandmother.

Leonie Tam

Undergraduate Student

Leonie is a fourth-year student in the medicinal and biological chemistry specialist program. Her project investigates the use of titanium dioxide nanoparticles as a photocatalyst in microfluidic reactors for dye degradation. In her spare time, she is a digital artist and enjoys playing video games with her friends.


PAST MEMBERS


POSTDOCS and VISITING RESEARCHERS

Dr. Christian Kreis
, Feodor Lynen Fellow (Alexander von Humboldt Foundation)
Dr. Liliana Rojas Candelas, visited the lab from Universidad Autónoma Metropolitana (Mexico)

GRADUATE STUDENTS

Keuna Jeon,
PhD Chemistry (NSERC-PGS), now an NSERC Postdoc fellow at Terasaki Institute (USA)
Meera Patel, MSc Chemistry; now at Schulich School of Medicine and Dentistry
Alexander Corbett, MSc Chemistry, OGS; now a PhD student at the University of Cambridge
Rongqin Liu, MEnvSc Research
Yifan Jia, International Visiting Graduate Student from Polytech Nice Sophia (France)
Ines Aroul, International Visiting Graduate Student from Polytech Nice Sophia (France)
Rudy Vernaz, International Visiting Graduate Student from Polytech Nice Sophia (France)
Christian Schmitt, International Visiting Graduate Student from Queensland University of Technology (Australia)
Alexa Zayadi,
PhD student, OGS

UNDERGRADUATE STUDENTS

Warren Wu, directed research student (CHMD90)
Renate Mathu, directed research student (CHMD90)
Vanessa Partrige Hing, directed research student (CHMD90)
Astha Modi, directed research student (CHMD90)
Renjie Cui, directed research student (CHMD90), graduate student at Queen’s University
Jaelyn Lee, directed research student (CHMD90), graduate student at Seoul National University
Therry Liu, directed research student (CHMD90),
Jessica Yang, directed research student (CHMD90, USRA); MSc Biotechnology at UTM
Uyen Tran Thao Hua, directed research student (CHMD90, UTEA); MSc engineering at UofT
Amir Koutahi, directed research student (PSCB90)
Samuel Ho, lab volunteer
Warren Wu, directed research student (PSCB90)
Thomas Sidarta Setio, lab volunteer
Rachel Ye, directed research student (PSCB90), Engr. Asst. at the Ministry of the Environment, Conservation and Parks
Ha Le, directed research student (PSCB90), doing a Summer research at the Dittrich Lab (UTSC)
Satkirat Singh, directed research student (CHMD91), undegraduate student at UTSC
Vanessa Hing, directed research student (PSCB90), intern at Griffith’ Food
Zhuo (Joy) Lu, directed research student (CHMD91), incoming graduate student at National University of Singapore
Angelina Cao, lab volunteer
Jaelyn Lee, lab volunteer
Dennis Hou, lab volunteer
Sarah Gigi, NSERC-USRA; MSc student at UTSC
Alexandra Law, lab volunteer; MSc student at Guelph University
Anna Galang,
directed research student (CHMD90)
Mengying Wu,
directed research student (CHMD90), co-supervised w/ Prof. Kris Kim
Ahmed Mohammed,
directed research student (PSCB90, CHMD90)
Aymen Arain, lab volunteer
Bisong “Mia” Zhou,
directed research student (CHMD90)
Aarushi Vardhan, directed research student (PSCB90)
Eleni Pitsiniaga,
directed research student (PSCB90)
Justin Asuncion,
directed research student (PSCB90)
Jane Lui, NSERC-USRA and directed research student (CHMD90); Dentistry student at HKUST
Jasmine Barington, NSERC-USRA
Meera Patel, NSERC-USRA (PSCB90, CHMD90); Schulich School of Medicine and Dentistry
Mayura Panjalingam, directed research student (PSCB90), now a Research Professional, Stanford University
Arya Shirzad,
directed research student (PSCB90)
Omar Zaher, directed research student (CHMD90); Schulich School of Medicine and Dentistry (Western Univ)
Sri Nowduri, NSERC-USRA, TD Fellow, CHMD90; University of Connecticut (medical student)
Daniel Lysak, CHMD90, 3x NSERC-USRA; PhD Chemistry at University of Toronto (Andre Simpson Lab)
Susannah Tran, directed research student (CHMD90)
Yilei Xue,
directed research student (CHMD90)
Alexis Ty
, directed research student (CHMD90)
Nawrah Khader, directed research student (BIOD98), completed PhD student at UofT
Anya Knight, lab volunteer; MHSc in Medical Physiology Candidate, University of Toronto
Sarah Nanquil, directed research student (BIOB90)
Ajitha Kananathalingam, lab volunteer
Muhammad Khan,  directed research student (CHMD90); Law school at Queen’s University
Brody Chen, UofT Excellence Award recipient; PhD in Chemistry student at Stanford University
Eric Lentz, Nano-Net Award recipient; medical school