Gupta, Malancha - University of Southern California

个人简介

PhD in Chemical Engineering, 2007 Massachusetts Institute of Technology, Cambridge, MA Thesis Title: Initiated chemical vapor deposition of fluoropolymer coatings for the surface modification of complex geometries, Advisor: Karen K. Gleason MS in Chemical Engineering, 2004 Massachusetts Institute of Technology, Cambridge, MA BS in Chemical Engineering, summa cum laude, 2002 The Cooper Union, New York City, NY

研究领域

We are interested in studying the mechanism and kinetics associated with initiated chemical vapor deposition (iCVD) of functional polymers onto structured materials and liquid surfaces. The iCVD process eliminates the need for organic solvents and thereby offers a safer and cleaner alternative to liquid phase polymer processing. Deposition onto Liquid Substrates We have recently demonstrated that we can deposit polymers onto liquids with low vapor pressures, including ionic liquids (ILs) and silicone oils. The liquid surface is mobile and unconstrained and thereby offers new initial conditions for growth and additional degrees of freedom which can be exploited to produce films and particles with desirable physical properties. We have found that the surface tension interaction between the polymer and the liquid plays a key role in determining the polymer morphology at the liquid-vapor interface. In addition, we have observed that the introduction of liquid substrates adds complexity because polymerization can now occur at both the liquid-vapor interface as well as within the liquid for cases in which the monomer is soluble within the liquid. We have demonstrated that we can form new polymeric structures such as ultra-thin polymer films, sub-micron particles, liquid/polymer composites, and core-shell particles by tuning solubility and surface tension interactions

近期论文

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(41) "Copolymerization of 1-Ethyl-3-vinylimidazolium bis(trifluoromethylsulfonyl)imide via Initiated Chemical Vapor Deposition," L. C. Bradley, M. Gupta, Macromolecules, 2014, 47, 6657. Link "Synthesis of Polymer Nanoparticles via Vapor Phase Deposition onto Liquid Substrates," P. D. Haller, M. Gupta, Macromolecular Rapid Communications, 2014, 35, 2000. Link "Initiated Chemical Vapor Deposition of Polymers Onto Liquid Substrates," L. C. Bradley, M. Gupta, Nanoscience and Nanotechnology Letters, 2015, 7, 39. Link "Deposition of Polymers onto New Substrates," M. Gupta, book chapter in "CVD Polymers" published by Wiley and edited by Karen Gleason "Systematic Study of the Growth and Morphology of Vapor Deposited Porous Polymer Membranes," S. Seidel, M. Gupta, Journal of Vacuum Science & Technology A, 2014, 32, 041514. Link "Fluoropolymer Surface Coatings to Control Droplets in Microfluidic Devices," C.T. Riche, C. Zhang, M. Gupta, N. Malmstadt, Lab on a Chip, 2014, 14, 1834. Link "Formation of Three-Dimensional Parylene C Structures via Thermoforming," B.J. Kim, B. Chen, M. Gupta, E. Meng, Journal of Micromechanics and Microengineering, 2014, 24, 065003. Link "Patterned Fluoropolymer Barriers for Containment of Organic Solvents within Paper-Based Microfluidic Devices," B. Chen, P. Kwong, M. Gupta, ACS Applied Materials & Interfaces, 2013, 5, 12701. Link "Solventless Fabrication of Porous-on-Porous Materials," P. Kwong, S. Seidel, M. Gupta, ACS Applied Materials & Interfaces, 2013, 5, 9714. Link "Effect of Surface Tension, Viscosity, and Process Conditions on Polymer Morphology Deposited at the Liquid–Vapor Interface," P.D. Haller, L.C. Bradley, M. Gupta, Langmuir, 2013, 29, 11640. Link "Formation of Polymer-Ionic Liquid Gels Using Vapor Phase Precursors," R.J. Frank-Finney, L.C. Bradley, M. Gupta, Macromolecules, 2013, 46, 6852. Link "Formation of Heterogeneous Polymer Films via Simultaneous or Sequential Depositions of Soluble and Insoluble Monomers onto Ionic Liquids," L.C. Bradley, M. Gupta, Langmuir, 2013, 29, 10448. Link "Hybrid Microcavity Humidity Sensor," S. Mehrabani, P. Kwong, M. Gupta, A. M. Armani, Applied Physics Letters, 2013, 102, 241101. Link "Simultaneous Polymerization and Solid Monomer Deposition for the Fabrication of Polymer Membranes with Dual-Scale Porosity," S. Seidel, P. Kwong, M. Gupta, Macromolecules, 2013, 46, 2976. Link "Responsive Polymer Welds via Solution Casting for Stabilized Self-Assembly," B. Chen, C. T. Riche, M. Lehmann, M. Gupta, ACS Applied Materials & Interfaces, 2012, 4, 6911. Link "Vapor Phase Deposition of Functional Polymers onto Paper-Based Microfluidic Devices for Advanced Unit Operations," P. Kwong, M. Gupta, Analytical Chemistry, 2012, 84, 10129. Link "Encapsulation of Ionic Liquids within Polymer Shells via Vapor Phase Deposition," L.C. Bradley, M. Gupta, Langmuir, 2012, 28, 10276. Link "Two-Phase Microfluidic Droplet Flows of Ionic Liquids for the Synthesis of Gold and Silver Nanoparticles," L.L. Lazarus, C.T. Riche, B.C. Marin, M. Gupta, N. Malmstadt, R. L. Brutchey, ACS Applied Materials & Interfaces, 2012, 4, 3077. Link "Ultrathin Free-Standing Polymer Films Deposited onto Patterned Ionic Liquids and Silicone Oil," R.J. Frank-Finney, P.D. Haller, M. Gupta, Macromolecules, 2012, 45, 165. Link "Self-Assembly of Pillars Modified with Vapor Deposited Polymer Coatings," B. Chen, S. Seidel, H. Hori, M. Gupta, ACS Applied Materials & Interfaces, 2011, 3, 4201. Link "Directed Deposition of Functional Polymers onto Porous Substrates Using Metal Salt Inhibitors," P. Kwong, C.A. Flowers, M. Gupta, Langmuir, 2011, 27, 10634. Link