Dr. Subhajit Biswas


Dr. Subhajit Biswas studied Physics at Jadavpur University, India. He was awarded the prestigious CSIR-NET (LS) fellowship to carry out doctoral research at the “Indian Association for the Cultivation of Science”, Jadavpur University, Kolkata. He received his PhD in Materials Science for the work on synthetic methods and physical properties of nanostructured metal-sulfides. He has vast experience in the growth of bottom-up one-dimensional nanostructures and device integration. Before joining University College Cork (UCC), Ireland, he worked in the University of Central Florida, Orlando, USA, and Scuola Normale Superiore, Pisa. He is currently working as a researcher in the Department of Chemistry & Tyndall National Institute, UCC, Cork, Ireland.

 Current research interests:

Growth engineering of Group IV nanowires; Defect engineering in nanowire to manipulate energy band structures and stress related mobility; structural analysis by different microscopic technique; thermodynamic and kinetic insight into nanowire growth; fabrication of single nanowire device by electron beam lithography; position control integration of nanowire in a chip using localized nano-dimension joule heating; exploring nanoscale phenomenon with in-situ microscopic observations; non-equilibrium impurity incorporation in nanoscale materials; direct bandgap group IV alloys; 2D group IV honeycombs; nanoscale semiconductor devices.



Selected Publications:

1. Non-equilibrium induction of tin in germanium: towards direct bandgap Ge1−xSnx nanowires, Subhajit Biswas, Jessica Doherty, Dzianis Saladukha, Quentin Ramasse, Dipanwita Majumdar, Moneesh Upmanyu, Achintya Singha, Tomasz Ochalski, Michael A. Morris &Justin D. Holmes, Nature Comm. 7 (2016) 11405.

2. Diameter Controlled Germanium Nanowires with Lamellar Twinning and Polytypes, Subhajit Biswas, Jessica Doherty, Dipanwita Majumdar, Tandra Ghoshal, Kamil Rahme, Michelle Conroy, Achintya Singha, Michael A Morris, Justin D Holmes, Chem. Mater. 27(2015) 3408.

3. In-situ Observations of Nanoscale Effects in Germanium Nanowire Growth with Ternary Eutectic Alloys, Subhajit Biswas, Colm O’Regan, Michael Morris, and Justin D Holmes, Small 11 (2015) 103-111.

4. Manipulating the growth kinetics of vapor-liquid-solid propagated Ge nanowires, Subhajit Biswas, Colm O’Regan, Nikolay Petkov , and Justin D Holmes, Nano Letters 13 (2013) 4044.

5. Inherent control of growth, morphology, and defect formation in germanium nanowires, Subhajit Biswas, Achintya Singha, Michael A Morris, Justin D Holmes, Nano Letters 12(2012) 5654.

6. A Josephson quantum electron pump, Francesco Giazotto, Panayotis Spathis, Stefano Roddaro, Subhajit Biswas, Fabio Taddei, Michele Governale & Lucia Sorba, Nature Physics 7(2011) 857.