Department of Physics
National Institute of Technology Calicut
Journal Publications
Soorya S. Raja, Romina Marie Mathewa, Deljo Davisa, Varanakkottu S. N., Asha Srinivasanc and Vinod T. P. April 2023. Soft matter. (Accepted)
Facile fabrication of stable wettability gradients on elastomeric
surfaces for applications in water collection and controlled cell
adhesion
Accepted in Soft matter
Farzeena, C., Vinay, T V., Lekshmi, B. S., Ragisha, C. M., and Varanakkottu, S. N., April 2023. Soft matter. June 2023.
Innovations in exploiting photo-controlled Marangoni flows for soft matter actuations.
Invited Perspective Article
(Selected as Cover Art)
Hanosh S., Lekshmi B. S., Varanakkottu, S. N., and S. D. George, ACS Appl. Polym. Mater., April 2023.
Simple Fabrication of PDMS-Grafted Hydrophobic Iron Oxide Particles for Oil–Water Separation and Stimuli-Responsive Liquid Marbles
Lekshmi, B. S. and Varanakkottu, S. N, Droplet, Feb. 2023.
Janus Liquid Marbles: Fabrication Techniques, Recent Developments and Applications
Invited Review Article
Lekshmi, B. S. and Varanakkottu, S. N, Langmuir, Sep. 2022.
Droplet-Impact driven formation of ultra-low volume liquid marbles with enhanced mechanical stability and sensing ability
DOI:10.1021/acs.langmuir.2c01880
S. K. Chondath, A. P. K. Sreekala, C. Farzeena, S. N. Varanakkottu, and M. M. Menamparambath, Nanoscale, Jul. 2022.
Interfacial tension driven adsorption of MnO2 nanoparticles at the liquid/liquid interface to tailor ultra-thin polypyrrole sheets
DOI: 10.1039/D2NR02130G
Farzeena and S. N. Varanakkottu, Langmuir, vol. 38, no. 6, pp. 2003–2013, Feb. 2022
Patterning of Metallic Nanoparticles over Solid Surfaces from Sessile Droplets by Thermoplasmonically Controlled Liquid Flow
C. M. Ragisha and S. N. Varanakkottu,IOP Conf. Ser. Mater. Sci. Eng., vol. 1221, no. 1, p. 012030, Mar. 2022.
Optically Controlled Liquid Marble Transport Platform
B. S. K. Lekshmi and S. N. Varanakkottu, IOP Conf. Ser. Mater. Sci. Eng., vol. 1221, no. 1, p. 012026, Mar. 2022.
Fabrication of Janus Liquid marbles With Tunable Particle Coverage by Controlling the Surface Tension of the Core Liquid
Chalikkara, F.; Varanakkottu, S. N. Opt. Lett., vol. 46, no. 16, pp. 3993–3996, Aug. 2021
Optofluidic modulator based on thermoplasmonically controlled liquid–liquid interface
DOI: 10.1364/OL.435137
Lekshmi, B. S.; Yadav, A. S.; Ranganathan, P.; Varanakkottu, S. N. Langmuir 2020, 36 (50), 15396–15402.
Simple and Continuous Fabrication of Janus Liquid Marbles with Tunable Particle Coverage Based on Controlled Droplet Impact
DOI: 10.1021/acs.langmuir.0c02988
Cunjing. Lv, S. N. Varanakkottu, and S. Hardt
J. Fluid Mech., vol. 889, p. A15, Apr. 2020
Liquid plug formation from heated binary mixtures in capillary tubes
DOI: 10.1017/jfm.2020.80
T. V. Vinay and S. N. Varanakkottu,
Langmuir, vol. 35, no. 32, pp. 10596–10600, Aug. 2019
Separation of Floating Oil Drops Based on Drop-Liquid Substrate Interfacial Tension
DOI: 10.1021/acs.langmuir.9b01829
Mozhi Devan Padmanathan, A. Sneha Ravi, H. Choudhary, S. N. Varanakkottu, and S. V. Dalvi, Langmuir, p. acs.langmuir.9b00698, May 2019
Predictive Framework for the Spreading of Liquid Drops and the Formation of Liquid Marbles on Hydrophobic Particle Bed
DOI: 10.1021/acs.langmuir.9b00698
P. Singha, S. Swaminathan, A. S. Yadav, and S. N. Varanakkottu, Langmuir, vol. 35, no. 13, pp. 4566–4576, Apr. 2019
Surfactant-Mediated Collapse of Liquid Marbles and Directed Assembly of Particles at the Liquid Surface
DOI: 10.1021/acs.langmuir.8b03821
F. Chalikkara, P. Singha, and S. N. Varanakkottu, Sens. Actuators Phys., vol. 285, pp. 659–665, Jan. 2019
Dual functional optofluidic platform based on light-actuated air plug
DOI: 10.1016/j.sna.2018.12.013
C. Lv, S. N. Varanakkottu, T. Baier, and S. Hardt, Nano Lett., vol. 18, no. 11, pp. 6924–6930, Nov. 2018
Controlling the Trajectories of Nano/Micro Particles Using Light-Actuated Marangoni Flow
DOI: 10.1021/acs.nanolett.8b02814
V. Nimmy John, S. N. Varanakkottu, and S. Varghese, Opt. Mater., vol. 80, pp. 233–240, Jun. 2018
Flexible, ferroelectric nanoparticle doped polymer dispersed liquid crystal devices for lower switching voltage and nanoenergy generation
DOI: 10.1016/j.optmat.2018.05.003
J. Vialetto et al., Angew. Chem. Int. Ed., vol. 56, no. 52, pp. 16565–16570, Dec. 2017
Magnetic Actuation of Drops and Liquid Marbles Using a Deformable Paramagnetic Liquid Substrate
M. Anyfantakis, S. N. Varanakkottu, S. Rudiuk, M. Morel, and D. Baigl, ACS Appl. Mater. Interfaces, vol. 9, no. 42, pp. 37435–37445, Oct. 2017
Evaporative Optical Marangoni Assembly: Tailoring the Three-Dimensional Morphology of Individual Deposits of Nanoparticles from Sessile Drops
T. N. Banuprasad, T. V. Vinay, C. K. Subash, S. Varghese, S. D. George, and S. N. Varanakkottu, ACS Appl. Mater. Interfaces, vol. 9, no. 33, pp. 28046–28054, Aug. 2017
Fast Transport of Water Droplets over a Thermo-Switchable Surface Using Rewritable Wettability Gradient
T. V. Vinay, T. N. Banuprasad, S. D. George, S. Varghese, and S. N. Varanakkottu, Adv. Mater. Interfaces, vol. 4, no. 7, p. 1601231, Apr. 2017
Additive-Free Tunable Transport and Assembly of Floating Objects at Water-Air Interface Using Bubble-Mediated Capillary Forces
S. N. Varanakkottu, M. Anyfantakis, M. Morel, S. Rudiuk, and D. Baigl, Nano Lett., vol. 16, no. 1, pp. 644–650, Jan. 2016
Light-Directed Particle Patterning by Evaporative Optical Marangoni Assembly
S. N. Varanakkottu, H. Engelbart, S. Joshi, M. Still, W. Xiao, and S. Hardt, Opt. Express, vol. 22, no. 21, p. 25560, Oct. 2014
Light-controlled tuning of the optical properties of nanoporous glass
A. Eifert, D. Paulssen, S. N. Varanakkottu, T. Baier, and S. Hardt, Adv. Mater. Interfaces, vol. 1, no. 3, p. 1300138, Jun. 2014
Simple Fabrication of Robust Water-Repellent Surfaces with Low Contact-Angle Hysteresis Based on Impregnation
D. J. Babu et al., Adv. Mater. Interfaces, vol. 1, no. 2, p. 1300049, Apr. 2014
Inscribing Wettability Gradients Onto Superhydrophobic Carbon Nanotube Surfaces
S. N. Varanakkottu, S. D. George, T. Baier, S. Hardt, M. Ewald, and M. Biesalski, Angew. Chem., vol. 125, no. 28, pp. 7432–7436, Jul. 2013
Particle Manipulation Based on Optically Controlled Free Surface Hydrodynamics
V. Pramitha, K. P. Nimmi, N. V. Subramanyan, R. Joseph, K. Sreekumar, and C. S. Kartha, Appl. Opt., vol. 48, no. 12, p. 2255, Apr. 2009
Silver-doped photopolymer media for holographic recording
International / National conferences
[1] S. N. Varanakkottu, “Bubble-mediated capillary interaction platform: Reconfigurable transport and assembly of floating objects,” Jul. 2017, doi: 10.3390/optofluidics2017-04257.
Media publications / Magazines
[1] Subramanyan Namboodiri Varanakkottu and Steffen Hardt (2013), Lichtgesteuerte Marangoni-Pinzette, Hoch3-Die Zeitung der Technischen Universität Darmstadt 6/2013, p16. Link