University of Massachusetts Amherst

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Large Area Formation of Porous Media and Patterned Carbon Composites
This invention provides rapid and low cost methods to make porous media and carbon composite materials as high-performance components for energy storage, electronics, senors and other applications.
Published: 5/9/2018   |   Inventor(s): James Watkins, DonG-po Song
Category(s): Physical Science, Nanotechnology, Material science
Flame Retardant Monomers and Crosslinked Polymers
This invention provides flame retardant monomers and polymers. The monomers are unsaturated deoxybenzoin compounds that are inherently fire resistant and can decrease the flammability of unsaturated polymers by crosslinking the polymers.
Published: 5/1/2018   |   Inventor(s): Todd Emrick, E. Bryan Coughlin, Megan Szyndler, Aabid Mir, Justin Timmons
Category(s): Chemicals, Material science, Physical Science
Low Cost, Durable Master Molds for Pattern Transfer
This invention provides a method to make low cost, durable master molds for micro- and nano-scale pattern transfer. The transferred pattern can have a variety of functional utilities such as manipulating wetting, adhesion an antimicrobial properties, inducing color, harvesting light, etc. The master molds can be created on flexible substrates, enabling additional opportunities including roll-to-roll embossing and use in blow molding and other operations.
Published: 4/30/2018   |   Inventor(s): James Watkins, Feyza Dundar
Category(s): Material science, Nanotechnology, Physical Science
Methods for Making Ultra-high Strength Multilayer Graphene Materials
This invention provides methods for making ultra-high strength, light-weight multilayer graphene materials.
Published: 12/21/2017   |   Inventor(s): Christos Dimitrakopoulos, Dimitrios Maroudas, Yuxi (nancy) Wang
Category(s): Material science, Engineering, Physical Science, Nanotechnology, Electronics
Diffusive Memristor as a Synapse
Neuromorphic computing, systems designed to mimic the biological nervous system, require far less power than current computer processors. The increased efficiency makes feasible artificial intelligence applications for smaller, hand-held devices (e.g. smartphones, tablets).  To this end, UMass inventors have designed hardware components that mimic neuronal synapses (Figure A). Specifically, diffusive Ag-in-oxide memristors show a temporal response during and after stimulation similar to that of a biological synapse. The novel diffusive memristor and its synapse-like dynamics enable a direct emulation of both short- and long-term plasticity of biological synapses and represent a major advancement in a hardware implementation for neuromorphic computing.
Published: 10/27/2017   |   Inventor(s): Jianhua (joshua) Yang, Qiangfei Xia, Mark Mclean, Qing Wu, Mark Barnell
Category(s): Devices, Engineering, Physical Science, Communications & internet, Computers
Fulleropyrrolidine Interlayers for High Efficiency Perovskite Solar Cells
Interface engineering is critical for achieving efficient solar cells.  This invention provides a significant power conversion efficiency (PCE) improvement of fullerene/perovskite planar heterojunction solar cells from 7.50% to 15.48% by inserting a fulleropyrrolidine interlayer between the metal electrode and the electron transport layer. The interlayer enhances recombination resistance, increases electron extraction rate and prolongs free carrier lifetime.cells.
Published: 8/11/2017   |   Inventor(s): Thomas Russell, Todd Emrick, Yao Liu, Zachariah Page
Category(s): Devices, Physical Science, Material science, Clean Energy
Patterning of 1-D, 2-D and 3-D Nanostructures
This invention provides methods of manufacturing a nanotextured surface comprising disposing a nanoparticulate ink on a substrate.
Published: 8/9/2017   |   Inventor(s): James Watkins, Rohit Kothari
Category(s): Material science, Nanotechnology, Physical Science, Devices & sensors
Flame Retardant Monomers and Polymers
This invention provides new flame retardant monomers and polymers made using such and other monomers. The new flame retardant monomers can reduce polymer flammability due to char formation. Upon the incorporation of such monomers into the polymer structure, their additional functional groups or handles impart reactivity to the polymer, enabling the formation of new functional polymeric and composite materials.
Published: 9/14/2016   |   Inventor(s): Todd Emrick, Aabid Mir, Umesh Choudhary
Category(s): Chemicals, Material science, Physical Science
Ultra-high Strength Multilayer Graphene Materials
This invention relates to the use of single crystalline graphene to create multilayer structures of graphene materials with superior shear strength.
Published: 9/14/2016   |   Inventor(s): Christos Dimitrakopoulos, Dimitrios Maroudas, Andre Muniz, D. Kurt Gaskill
Category(s): Material science, Nanotechnology, Electronics, Engineering, Physical Science
Method for Preparing Aerogels and Foams
The technology described here is a method for making aerogels, the lightest and lowest density known solid on the planet.  Most aerogels are prepared using supercritical drying or freeze drying.  These techniques use supercritical fluids that are supercritical at high pressures and temperatures and can sometimes be hazardous.  Other supercritical fluid based methods use low pressure solvent removal and/or freezing and both of these methods are energy intensive and result in high production costs.

To prepare aerogels and foam materials using this process, the polymer material is frozen while the remaining steps take place at ambient pressure and room temperature. The resulting bioactive polymer has a bulk density of 500 -2500 grams per cubic meter. Compared to other methods, this is a cost-effective and safe method of preparing foams and aerogels. Moreover, the method consumes less energy and is also environmentally-friendly, as the aqueous solutions and solvents used in the process can be easily recovered and recycled.

Published: 9/13/2016   |   Inventor(s): Kenneth Raymond Carter, Yinyong Li
Category(s): Nanotechnology, Material science, Engineering, Physical Science
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