The University of Massachusetts Amherst

Search Results - Nanotechnology

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Economical Surface Treatment for Harvesting Epithelial Cells from Biological Fluids
This invention provides economical, bio-interactive surfaces and surface treatment methods for selective capture of targeted epithelial cells or other cell types from cell mixtures or complex biological fluids. Preparation or fabrication of the engineered surfaces provided by this technology does not require the use of expensive and unstable biomolecular materials, and the resulting surfaces can distinguish different cell types or cells that express different levels of the same surface adhesion marker. Such engineered surfaces can be used as economical tools for assessment of cancer risk, cancer diagnosis, and tracking of the effectiveness of cancer treatments, among other potential applications.
Published: 8/13/2020   |   Inventor(s): Maria Santore, Kathleen Arcaro, Surachate Kalasin
Category(s): Biotechnology, Nanotechnology, Diagnostic technology, Devices & sensors, Life Sciences, Healthcare, Research tools
Stablizing Liquid Drops ofof Arbitrary Shapes by the Interfacial Jamming of Nanoparticles
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Published: 8/13/2020   |   Inventor(s): Thomas Russell, Todd Emrick, Mengmeng Cui
Category(s): Material science, Nanotechnology, Engineering, Physical Science
A Method of Patterning and Stabilizing Structures Derived from Nanoparticle Based Inks
This invention provides a novel method of patterning and stabilizing structures derived from nanoparticle based inks. The method involves the use of a number of strategies to reduce undesirable thermal effects and promote binding of the nanoparticles during the imprinting process.
Published: 8/5/2020   |   Inventor(s): James Watkins, Feyza Dundar, Irene Howell
Category(s): Devices, Material science, Engineering, Nanotechnology, Physical Science
Polymer-nanoparticle Hybrid Systems for Photovoltaic, Battery and Other Applications
This invention provides polymer-nanoparticle hybrid materials with high structural order for photovoltaic, battery and other applications.
Published: 7/10/2020   |   Inventor(s): James Watkins, Vikram Daga, Ying Lin
Category(s): Nanotechnology, Material science, Physical Science, Devices
Novel and Scalable Methods for the Patterning of Complex Metal Oxide Structures
This invention provides novel and scalable methods for the patterning of complex metal oxide structures for optical and other device applications. The methods involve the use of nanoparticle based inks to achieve the fabrication of material structures with complex geometries, such as high aspect ratio structures and structures having individual components that differ in height, orientation, and/or areal density.
Published: 7/10/2020   |   Inventor(s): James Watkins
Category(s): Devices, Engineering, Material science, Nanotechnology, Physical Science
Novel Protein-Polymer Nanoassemblies for the Intracellular Delivery and Stimuli-responsive Traceless Release of Proteins
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Published: 12/24/2019   |   Inventor(s): Sankaran Thayumanavan, Bin Liu
Category(s): Biotechnology, Healthcare, Life Sciences, Nanotechnology, Research tools
A Novel Non-cationic Lipid-polymer-based Nanossembly for the Complexation and Intracellular Delivery of Nucleic Acids
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Published: 12/20/2019   |   Inventor(s): Sankaran Thayumanavan, Kingshuk Dutta
Category(s): Biotechnology, Healthcare, Life Sciences, Nanotechnology, Therapeutics & prevention
Novel Polymeric Nanogels for Controlled Intracellular Protein Delivery and Traceless Release
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Published: 9/18/2019   |   Inventor(s): Sankaran Thayumanavan, Jiaming Zhuang
Category(s): Life Sciences, Biotechnology, Healthcare, Research tools, Therapeutics & prevention, Nanotechnology, Diagnostic technology
Hyaluronic Acid Based Nanogel or Microgel Compositions for Targeted Delivery of Small Molecule Therapeutics
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Published: 9/13/2019   |   Inventor(s): Sankaran Thayumanavan, Lisa Minter
Category(s): Biotechnology, Diagnostic technology, Healthcare, Life Sciences, Nanotechnology, Research tools, Therapeutics & prevention
Hierarchically Ordered Nanoscale Electric Field Concentrators for Embedded Thin Film Devices
Resistance switching devices, also known as memristive devices, represent the next generation in computing. With a typical metal-oxide-metal structure, memristors change resistance under different external biases and retain this new resistance even when power is turned off. This allows memristors to store data without needing constant power like in traditional computer memory. Memristors have other desirable properties such as low power consumption, fast switching speed, and multistate logic potential. These properties open up next generation computing applications in non-volatile memory, reconfigurable switches, bio-inspired neuromorphic computing, and radiofrequency switches. However, before these applications are enabled, significant technical challenges in memristors must be overcome. These include cycle-to-cycle instabilities in operating voltage and resistance states, which cause memory retention and device endurance issues.

 

Professor Stephen Nonnenmann and his laboratory address these instability issues by embedding highly ordered metal nanoislands in the memristor’s oxide switching layer. Through a unique template-directed nanoisland embedding procedure, the nanoisland diameter, spacing, and area density can be precisely controlled. The Nonnenmann lab found that through precise control of these variables, the growth of conductive filaments formed through the memristor’s oxide layer, which enable its unique properties, can be more precisely controlled, leading to a nearly 100% improvement in uniformity performance in one device case.

Published: 5/20/2019   |   Inventor(s): Stephen Nonnenmann, Jiaying Wang
Category(s): Computers, Electronics, Engineering, Nanotechnology, Material science, Devices & sensors
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