University of Massachusetts Amherst

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A Novel, Low-Cost Substrate System for Gas-Phase or Multiphase Analyte Detection Using Surface-Enhanced Raman Scattering (SERS)
This invention provides a new and low-cost substrate system and related methods for highly sensitive detection of analytes in a gaseous phase or multiphase sample medium.
Published: 6/21/2018   |   Inventor(s): Lili He, Haoxin Chen
Category(s): Research tools, Food technology & plant science, Nanotechnology
Simple and Rapid Optical Detection of Bacteria Using a Mobile Device
This invention provides cost-effective substrates and a rapid method for detection of bacteria in food, water or other materials, or on material surfaces using a mobile device, such as a smartphone attached to an inexpensive smartphone microscope.
Published: 5/17/2018   |   Inventor(s): Lili He, Brooke Pearson
Category(s): Food technology & plant science, Nanotechnology, Research tools, Devices & sensors
Dual-Functional Substates for SERS- and SEIRAS-Based Detection of Analytes
This invention provides cost-effective, dual-functional substrates for analyte detection by using Surface Enhanced Raman Spectroscopy (SERS) and Surface Enhanced Infrared Absorption Spectroscopy (SEIRAS).
Published: 5/10/2018   |   Inventor(s): Lili He, Chen Tan
Category(s): Material science, Nanotechnology, Research tools
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
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
Ultra-Compact Carbon Nanotube Sources and Integrated Circuits for Low-Cost Terahertz Spectroscopy and Imaging
Terahertz imaging is becoming an increasingly important non-destructive evaluation method, with biomedical, security, aerospace, and materials characterization applications. Large size and high cost currently limit broad commercial implementation of terahertz imaging and spectroscopy systems.

 

In this invention, a compact, low-cost terahertz source has been developed that may be easily integrated into several common high-frequency circuit designs, such as microstrip and coplanar waveguide.  In operation, the source, palladium or platinum nanowires, is coupled to antennas and subjected to a low voltage, causing the emission of terahertz radiation. The terahertz radiation emitting from the antennas is collimated by a silicon lens, which gives the system a broadcast range of 1-2 m. The required power to generate the radiation is extremely low, on the order of 100 nW. The UMass Terahertz Laboratory has successfully demonstrated the technology in a number of applications, including characterizing RNA flowing through a nanofluidic channel and the crystalline polymer PHB.

Published: 12/14/2017   |   Inventor(s): Sigfrid Yngvesson, Martin Muthee
Category(s): Nanotechnology, Electronics, Research tools
Method OF Transfer Printing
2-dimensional (2D) materials are characterized as being one or two atoms thick. Graphene (image above) is by far the best known 2D material. However, there are many other 2D materials with attractive properties (e.g. hexagonal boron nitrides (hBN), transition metal dichalcogenides, etc.). Due to their superior physical properties, graphene and related 2D materials have the potential to revolutionize many industries, enable development of new devices, and provide new functionalities to existing technologies. In short, these materials have the potential to be disruptive and pervasive. Despite their overwhelming promise, however, industrial scale manufacture of these materials is not yet a reality, due in part to an inability to control layer number and to print over large surface areas.

 

To address this problem, scientists at UMass Amherst have engineered a high-precision printing method that is compatible with current industrial manufacturing processes. This simple method allows single layer 2D material to be patterned, transferred and printed onto a substrate, enabling the fabrication of novel 2D heterostructures devices. Thus, this method will facilitate the assembly of novel devices and enable large-scale manufacture of devices with designed properties.

Published: 8/10/2017   |   Inventor(s): Qiangfei Xia, Peng Lin
Category(s): Material science, Nanotechnology
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
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
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