Nationality: Indian
Age: 32
Present address: École Normale Supérieure, 24 Rue Lhomond, Paris, 75005.
Email: varanakkottu(at)ens.fr
Personal website: https://sites.google.com/site/subramanyannvaranakkottu/home
Research interests:
Stimulifluidics
Particle manipulation at micro- and nanoscale
Droplet microfluidics
All-optical modulators
Professional experience:
03.2015 – till date: Post-doctoral scientist, École Normale Supérieure, Paris.
Supervisor- Prof. Damien Baigl, Research area: Optofluidics
06.2013 – 02.2015: Post-doctoral scientist, Center of Smart Interfaces, TU Darmstadt, Germany.
Supervisor- Prof. Steffen Hardt, Research area: Optofluidics/Microfluidics
Academics:
09.2009 – 05.2013: Ph.D. in Natural Sciences, Center of Smart Interfaces, TU Darmstadt, Germany.
Supervisor- Prof. Steffen Hardt , Research area: Optofluidics/Microfluidics
Thesis title: Light-induced Microfluidic Transport Phenomena
10.2008 - 08.2009: Research student, Cochin University of Science and Technology, India.
Supervisor: Prof. C. Sudha Kartha,
Research area: Photopolymers/Holography
09.2006 - 06.2008: M.Phil. Physics, Cochin University of Science and Technology, India.
07.2004 - 05.2006: M.Sc. Physics, Kannur University, India.
07.2001 - 04.2004: B.Sc. Physics, Kannur University, India.
Peer reviewed publications:
+equal contribution
[10] Subramanyan Namboodiri Varanakkottu+, Manos Anyfantakis+, Mathieu Morel, Sergi Rudiuk and Damien Baigl, Light-directed particle patterning by evaporative optical Marangoni assembly, Nano Letters, accepted
[9] Subramanyan Namboodiri Varanakkottu, Henrdryk Engelbart, Sumit Joshi, Martin Still, Wenjia Xiao and Steffen Hardt (2014), Light-controlled tuning of the optical properties of nanoporous glass, Optics Express, 22(21), 25560-25569.
[8] Deepu J Babu,+ Subramanyan Namboodiri Varanakkottu,+ Alexander Eifert,+ Dirk deKoning, Gennady Cherkashinin, Steffen Hardt and Jörg J. Schneider (2014), Inscribing wettability gradient into superhydrophobic CNT surfaces, Advanced Materials Interf., 1(2), 130049.
+First authorship shared (contributed equally to this work)
[7] Alexander Eifert, Dorothea Paulssen, Subramanyan Namboodiri Varanakkottu, Tobias Baier, Steffen Hardt (2014), Simple fabrication of robust water repellent surfaces with low hysteresis contact angle based on lubricant impregnated surfaces., Advanced Materials Interf., 1(3), 1300138. (Very Important Paper)
[6] Subramanyan Namboodiri Varanakkottu, Sajan Daniel George, Tobias Baier, Steffen Hardt, Martina Ewald and Markus Biesalski (2013), Particle Manipulation based on Optically Controlled Free Surface Hydrodynamics, Angew. Chem. Int. Ed., 52(28), 7291-7295. (Selected under Hot topics by Wiley, also included in the virtual issue on hot topics by Advanced Materials Journal, topic: Surfaces and Interfaces)
[5] Subramanyan Namboodiri Varanakkottu, Sajan Daniel George, Tobias Baier, Steffen Hardt, Martina Ewald and Markus Biesalski (2013), Manipulation of microparticles and biological cells using light-induced Marangoni flow, MicroTAS 2013, 748-750.
[4] Steffen Hardt, Subramanyan Namboodiri Varanakkottu, Sajan George, Tobias Baier, Martina Ewald and Markus Biesalski (2012), Optically controlled Marangoni Tweezers, Bulletin of the American Physical Society, 57(17).
[3] Sajan D George, Subramanyan Namboodiri V, Steffen Hardt (2010), Laser induced photoswitching of azobenzene incorporated in PDMS films, SPIE - Int. Soc. Opt. Eng., 7774, 7774W(1-9).
[2] Pramitha V, Nimmi K P, Subramanyan N V, Rani Joseph, Sreekumar K and Sudha Kartha C (2009), Silver-doped photopolymer media for holographic recording, Appl. Opt., 48(12), 2255-2261. (Hologram reported in this paper was the cover image of the journal issue) Full paper
[1] Subramanyan NV, Rajesh CS, Pramitha V, Sreeroop SS and Sudha Kartha C (2009), Holographic Lens Recorded in Eosin Sensitized Acrylamide Based Photopolymer, ICONTOP 2009 .
Media publications/Magazines:
[1] Subramanyan Namboodiri Varanakkottu and Steffen Hardt (2013), Lichtgesteuerte Marangoni-Pinzette, Hoch3-Die Zeitung der Technischen Universität Darmstadt 6/2013, p16.
Invited talks:
1. "Optical Manipulation based on Azobenzene materials". Laboratoire Physique de la Matiere Condensee, Unite Mixte de Recherche 7643 du CNRS et de l'Ecole polytechnique, 91128 Palaiseau cedex, France on October 1, 2015.
2. "Light-actuated Marangoni tweezers", OMNO 2014 conference held at Paris Saclay on December 15, 2014.
Awards/recognition:
08.2015 INSPIRE faculty award by DST (Department of Science and Technology), India.
03.2015 Post doctoral fellowship at the Department of Chemistry, École normale supérieure, Paris.
10.2013 Featured article in HOCH3 - Journal of TU Darmstadt (Title: Die lichtgesteuerte Marangoni-Pinzette).
07.2013 Paper published in Angewandte Chemie International edition was selected under hot topics by Wiley VCH publishers (DOI: 10.1002/anie.201302111, also included in the virtual issue by Advanced Materials journal).
06.2013 Post doctoral fellowship at Center of Smart Interfaces, TU Darmstadt.
09.2009 Ph.D. Scholarship by Center of Smart Interfaces (Cluster of Excellence,DFG), TU Darmstadt, Germany.
04.2009 Hologram reported in the paper was selected as the front cover of Applied Optics Journal
(Vol. 48, Issue 12, 2009).
06.2004 University rank holder - B.Sc. Physics, Kannur University, India.