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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
WearID: RFID Wristband Reader
Advances in RFID technology are opening up a myriad of commercial applications related to identifying and interacting with objects, from home automation and health and wellness to augmented reality and tele-rehabilitation. Passive UHF RFID readers are a particularly attractive option due to their low cost and no maintenance; however, their limited range necessitates the use of many readers to cover a single large room, an expensive and labor-intensive process.

This invention, known as WearID, overcomes the traditional limitations of UHF RFID readers through end-to-end design innovation, optimizing the wearable reader for low power, form-factor, and performance. WearID is able to detect grasping, releasing, touching, and passing near tagged objects.

Published: 5/2/2018   |   Inventor(s): Deepak Ganesan, Ali Kiaghadi, Pan Hu, Jeremy Gummeson
Category(s): Devices & sensors, Communications & internet, Electronics, Engineering, Software & information technology, Healthcare
Graphene-Based Microfluidic Devices
This invention is the first example where large-area graphene has been harnessed as an architectural material in microfluidic devices. Incorporation of single-layer graphene enables a drastic reduction in device thickness. The resulting ultra-thin architecture facilitates on chip X-ray diffraction analysis. Graphene layers serve as a diffusion barrier to protect sample against evaporative losses and from external contaminants, e.g. such as oxygen for anaerobic work.

 

These devices have tremendous utility for applications in X-ray science, such as X-ray diffraction for structural biology and small-angle X-ray scattering (SAXS) as well as other lab- on- a- chip applications. 

 

Published: 12/21/2017   |   Inventor(s): Sarah Perry, Christos Dimitrakopoulos, Shuo Sui, Yuxi (nancy) Wang
Category(s): Devices & sensors, Research tools, Devices
Novel Systems for Improved Backscatter Tag Communications
A new fully asymmetric backscatter communication protocol where nodes blindly transmit data as and when they sense. This model enables fully flexible node designs, from extraordinarily power efficient backscatter radios that consume barely a few micro-watts to high-throughput radios that can stream at hundreds of Kbps while consuming a paltry tens of micro-watts.

 

 

Published: 8/11/2017   |   Inventor(s): Deepak Ganesan, Pan Hu, Pengyu Zhang
Category(s): Communications & internet, Devices & sensors, Electronics, Engineering, Software & information technology
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
FS Backscatter Communication
The Frequency-Shifted (FS) Backscatter invention promotes practical backscatter communication for ultra-low power on-body sensors by leveraging radios on existing smart phones and wearables. This invention addresses the self-interference from the wireless carrier without relying on built-in capability to cancel or reject the carrier interference.  Utilizing this invention, the tag shifts the carrier signal to an adjacent non-overlapping frequency band and isolates the spectrum of the backscatter signal from the spectrum of the primary signal to enable more robust decoding.
Published: 9/14/2016   |   Inventor(s): Deepak Ganesan, Pengyu Zhang
Category(s): Communications & internet, Devices & sensors, Electronics, Engineering, Software & information technology
Braidio - Assymetric Transceiver for Mobile Devices
 
Published: 9/14/2016   |   Inventor(s): Deepak Ganesan, Pan Hu
Category(s): Communications & internet, Devices & sensors, Electronics, Engineering, Software & information technology
Efficient Thermoelectric Converters
The invention provides thermoelectric devices similar to conventional Peltier-elements based on folded, multi-layered nanomembranes prepared from 2-dimensional (2D) van der Waals materials. These van der Waals materials (e.g. graphene, hexagonal boron nitride, and transition metal dichalcogenides) have both single atomic layers with strong in-plane covalent bonding and weak bonding across atomic mononolayers. When devices are fabricated by folding monolayers onto themselves and into layered structures (figure). In this configuration, the electric path is shorter and the thermal path is suppressed. Moreover, multiple elements can be combined in series and parallel configurations to produce a useful amount of electricity. Thus, these devices can be used to convert waste-heat into electricity and can also serve a thermoelectric cooler. Some information about different applications here.
Published: 3/8/2016   |   Inventor(s): Zlatan Aksamija, Robert Blick
Category(s): Clean Energy, Devices, Devices & sensors, Electronics, Engineering, Material science, Nanotechnology, Physical Science
Rapid, Sensitive and Selective Sensors for Ionic Mercury
The ability to rapidly and selectively detect and quantify chemicals has profound implications for human and environmental health. As poisonous chemicals, such as mercury (from solid-waste incineration and fossil-fuel combustion), continue to contaminate land and/or water, the development of portable, convenient “in the field” chemosensors becomes critically important. This invention provides novel colorimetric sensors for rapid, sensitive and selective detection of ionic mercury (Hg2+). The detection can be implemented using paper strip, dipstick or solution based sensors that are easy and inexpensive to manufacture and convenient to use for “in the field” measurements.
Published: 6/25/2015   |   Inventor(s): Gregory Tew, Raja Shunmugam
Category(s): Chemicals, Devices & sensors
COLORIMETRIC RADIATION SENSORS
Researchers at UMass Amherst have developed sensors for detection of ionizing radiation (e.g. X-ray, gamma ray, and electron beam radiation) based on polymer multilayer films. A radiation sensor includes a substrate and a polymer multilayer film including alternating layers of a high refractive index polymer and a low refractive index polymer that give rise to reflected structural color in the visible region of the spectrum. The high refractive index polymer and the low refractive index polymer each comprise repeat units derived from a photo-crosslinkable monomer. A variety of rigid and flexible substrates can be used to fabricate sensors (for example, Figure 1 shows a multilayer polymer fabricated on a Mylar sheet), and polymer multilayer films can be designed to undergo either a blue or red shift (see Figure 2) in response to ionizing radiation. The radiation sensors are useful in preparing various articles, including wearable patches, packaging materials, labels, and window panes.
Published: 6/19/2015   |   Inventor(s): Ryan Hayward, Maria Chiappelli
Category(s): Healthcare, Devices & sensors, Material science
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