4186 Perrine Pointe, Midland, MI 48640 • 989-631-5425
Michigan molecular institute - Midland, MI
School / High School:
Indian Institute of Technology- Mumbai, Maharashtra
Ph. D. in Chemistry
Developed budget and people management s... • career development • challenging individuals to maximize impa... • creating a high performance team focused... • coordination capability along intra-comp... • focused efforts and adherence to deadlin...
Solid-State Colorimetric Biosensors Comprised Of Dendritic Polymer Networks
Solid-state colorimetric biosensors having sensory groups and interdendritic cross-linking segments of alternating conjugated double and triple bonds are prepared by intermolecular polymerization of diacetylene-functionalized dendritic polymer precursors. The polymerization process may be used to form solid films that are capable of indicating the presence of an analyte by a detectable change in color. The disclosed solid-state colorimetric biosensors may exhibit excellent stability at elevated temperatures and in the presence of organic solvents, and due to the dendritic architecture and high density of sensing functionality achieve high sensitivity to analytes.
Surface Modification Of Polyamide Reverse Osmosis Membranes
The present invention relates to surface modification of reverse osmosis membranes to introduce antifouling properties without compromising the separation properties of the original membranes. This approach utilizes: providing a coated membrane surface having enhanced hydrophilic characteristics that prevents the biofoulants from settling; have a surface that consists of hydrophilic brushes that unsettle any biofoulants that get through; and having antimicrobial ions present in the membrane coatings and able to remove or minimize any remaining biofoulants without leaching into the permeate. These coatings are made using dendritic polymers such as hyperbranched polymers or dendrimers.
Abhijit Sarkar - Midland MI, US George Rayfield - Pahrump NV, US
OXAZOGEN INC. - Midland MI
G02B 5/23 C08K 3/04
252586, 524496, 977750, 977752, 977742
This invention concerns a polymer coating material composition (PCM) comprising as components a polymer matrix, carbon nanotubes (CNT) as optical power limiters (OPL), and carbon rich molecules. One aspect of the invention is where the Polymer Matrix is a hyperbranched polymer, such as a hyperbranched polycarbosiloxane polymer. Another aspect of the invention is where the CNT is a short multiwall carbon nanotube (sMWNT). A further aspect of the invention is where the carbon-rich molecules are triethoxysilyl anthracene derivatives. The composition wherein the ratio in weight percent of Polymer Matrix to CNT to carbon-rich molecule is from 94:3:3 to 99.8:0.1:0.1. The composition can further contain one or more of multi-photon absorbers (MPA) chromophores or reverse saturable absorbers (RSA) chromophores. These compositions can be used as: a) a film, b) a coating, c) a liquid, d) a solution, or e) a sandwiched film between two transparent substrates.
Non-Focal Optical Power Limiting Polymeric Materials
Abhijit Sarkar - Midland MI, US Shamim Mirza - Long Beach CA, US Salma Rahman - Midland MI, US George Rayfield - Eugene OR, US
OXAZOGEN, INC. - Midland MI
G02B 5/23 G02B 1/10 G02B 5/22 B82Y 99/00
359885, 252582, 252586, 977742
This invention concerns a solid polymer matrix for use as non-focal optical power limiting polymeric materials. This matrix contains: (1) a hyperbranched polymer family, especially HB-PCS OR HB-PU, HB-PUSOX or PC; (2) one or more of RSA dye, MPA dye, azo dye or DMNPAA; 3) CNT and 4) a self-focusing component.This solid polymer matrix provides efficient protection from laser beam damage along with its self-focusing mechanism.
This invention concerns a polymer coating material composition (PCM) comprising as components a Polymer Matrix, carbon nanotubes (CNT) as optical power limiters (OPL), and carbon-rich molecules. One aspect of the invention is where the Polymer Matrix is a hyperbranched polymer, such as a hyperbranched polycarbosiloxane polymer. Another aspect of the invention is where the CNT is a short multiwall carbon nanotube (sMWNT). A further aspect of the invention is where the carbon-rich molecules are triethoxysilyl anthracene derivatives.The composition wherein the ratio in weight percent of Polymer Matrix to CNT to carbon-rich molecule is from 94:3:3 to 99.8:0.1:0.1.The composition can further contain one or more of multi-photon absorbers (MPA) chromophores or reverse saturable absorbers (RSA) chromophores.These compositions can be used as: a) a film, b) a coating, c) a liquid, d) a solution, or e) a sandwiched film between two transparent substrates.
This invention concerns a polymer coating composition for use as non-focal optical power limiting dye containing polymeric materials. This composition contains: (1) one or more Modified Polymers comprising a Polymer, such as a hyperbranched polymer family, especially HB—PCS, HB—PU, HB—PUSOX or PC with one or more of: a) reverse saturable dye (RSA), b) multi-photon absorption dye (MPA), c) an azo dye, or d) absorption dye, which dye is chemically bonded to the pendant groups of the Polymer (along its chain and/or termini) or which forms a part of the backbone of the Polymer; (2) carbon nanotubes (CNT) as optical power limiters (OPL); and (3) a self-focusing component.This Modified Polymer composition contains the dye incorporated into the polymer chain backbone or chemically bonded to the terminal groups at the ends or along the chain of the polymer, which provides efficient protection from laser beam damage along with its self-focusing mechanism.
Michigan Molecular Institute May 2001 - Jun 2015
Walman Optical May 2001 - Jun 2015
Research and Development - Optical Coatings
University of Oregon Jun 1999 - Apr 2001
Institute For Chemical Reaction Science Tohoku University Sendai Japan Apr 1997 - Mar 1999
Institute For Chemical Reaction Science Tohoku University Sendai Japan Mar 1995 - Mar 1997
Jsps Postdoctoral Fellow
Indian Institute of Technology, Bombay 1987 - 1993
Doctorates, Doctor of Philosophy, Organic Chemistry
Ranchi University, Ranchi 1983 - 1987
Master of Science, Masters, Chemistry
St. Xavier's College, Ranchi 1978 - 1983
Bachelors, Bachelor of Science, Chemistry
St. John's High School, Ranchi 1970 - 1978
St. Jhon's High School, Ranchi
Polymers Chemistry Materials Science R&D Coatings Polymer Science Polymer Chemistry Characterization Nanomaterials Nanotechnology Tga Analytical Chemistry Surface Chemistry Organic Chemistry Ftir Product Development Spectroscopy Thin Films Organic Synthesis Polymer Characterization Nmr Nanoparticles Catalysis Science Rheology Photonics Hplc Mass Spectrometry Commercialization Electrochemistry Powder X Ray Diffraction Uv/Vis Materials
Bengali Hindi Japanese English
Secrets of Motivation Dale Carnegie Training, License Live Online Training License Live Online Training
Michigan Molecular Institute Midland, MI 2001 to 2015 Research ScientistUniversity of Oregon Eugene, OR 1999 to 2001 Research AssociateTohoku University
1995 to 1999 JSPS postdoctoral AssociateNational University of Singapore Singapore 1994 to 1995 NSTB Postdoctoral AssociatePolyolefin Industries Limited Mumbai, Maharashtra 1993 to 1994 Research ScientistIndian Institute of Technology Mumbai, Maharashtra 1987 to 1993 Graduate Student Research Assistant
Indian Institute of Technology Mumbai, Maharashtra 1993 Ph. D. in ChemistryRanchi University Ranchi, Jharkhand 1986 M. Sc. in ChemistrySt. Xavier's College Ranchi, Jharkhand 1983 B. Sc. in Chemistry
Developed budget and people management skills. Engaged in mentoring, career development, challenging individuals to maximize impact and performance, creating a high performance team focused on innovation and delivery. Develop interpersonal skills, coordination capability along intra-company as well as inter-company people, focused efforts and adherence to deadlines.
Indian Oil Corporation (2009) Surya sen college, siliguri - Lecturer (2008-2009)
INDIAN INSTITUTE OF CHEMICAL ENGINEERS - B.TECH INCHEMICAL ENGINEERING, NORTH BENGAL UNIVERSITY - PH.D IN CHEMISTRY, UNIVERSITY OF NORTH BENGAL - M.SC IN CHEMISTRY, SILIGURI COLLEGE - B.SC IN CHEMISTRY
Hello frnds this is abhijit...one word to describe me...."cooooooooooool"
99% BAD... 1% GOOD... I am who i am... No matter how hard u try,Ur opinion is not recommended!!! ;)