Search Results - physical science

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Body heat-powered heart beat detection circuit
Technology Description The inventors have designed, implemented, and demonstrated an integrated circuit architecture for robust and automated detection of heartbeats from a two-electrode ECG signal. This uses sufficiently low power (~20μW) that it can be powered entirely by human body heat from a cm-scale TEG module at ~20mV, including wireless...
Published: 3/4/2020   |   Inventor(s): Soumya Bose, Boyu Shen, Matthew Johnston
Keywords(s): battery-less sensors, biosensor, heart rate monitor
Category(s): Engineering, Medical Devices, Nanoscience & Microtechnologies, Physical Science, Device, Diagnostics
Thermal Fan
Technology Description This thermal fan device operates, in principle, similarly to a heat pipe by utilizing the latent heats of vaporization and condensation with the corresponding phase changes to move a fluid like air. A phase change working fluid is contained within a confined volume that is exposed to the low-grade heat. The working fluid is selected...
Published: 3/4/2020   |   Inventor(s): Bahman Abbasi, Deepak Sharma
Keywords(s): air circulation, low-grade heat, thermal fan
Category(s): Engineering, Physical Science, Sustainability & Cleantechnologies, Device
Electrocaloric Device
Technology Description This technology is an electrocaloric devices as well as methods of making electrocaloric integrated circuits, and methods of thermally cycling integrated circuits. The electrocaloric device can include an electrocaloric material having a solid solution of two or more components of perovskites BNT, BKT, BZT, BMgT, or BNiT. The...
Published: 3/3/2020   |   Inventor(s): David Cann, Brady Gibbons, Troy Ansell, James (PTD) Abbott
Keywords(s):  
Category(s): Device, Engineering, Materials Science, Nanoscience & Microtechnologies, Physical Science
Radio Frequency Energy Harvesting with Power Conversion Efficiency Tracking
Technology Description This technology is a novel multi-stage programmable rectifier that can be calibrated to efficiently receive and rectify an RF input to generate a DC voltage output. Each rectifier stage can include a transistor with a programmable threshold voltage and a switch connected to the transistor. Each rectifier stage can also include...
Published: 3/3/2020   |   Inventor(s): Lingli Xia, Patrick Chiang, Jiao Cheng
Keywords(s): Energy harvesting, low power sensors, RF rectifier
Category(s): Engineering, Device, Materials Science, Medical Devices, Nanoscience & Microtechnologies, Physical Science, Sustainability & Cleantechnologies
Methods for Enhanced Atomic Layer Deposition
Technology Description Oregon State university researchers have created a method and device for in-situ microwave annealing to assist Atomic Layer deposition (ALD). This technology will allow for improved ALD film properties at lower temperatures. The technology allows for improvements such as eliminating the need to remove the substrate and film between...
Published: 11/26/2019   |   Inventor(s): John Conley
Keywords(s): Atomic layer deposition (ALD), energy enhanced ALD, in-situ annealing, microwave annealing
Category(s): Chemical, Device, Engineering, Materials Science, Nanoscience & Microtechnologies, Physical Science
Hybrid Silicon-Transparent Conductive Oxide Multiplexing Optical Transmitters
Technology Description This device is a wavelength division multiplexing (WDM) transmitter that boasts high speed, energy efficiency, and thermal free optical tuning that can be used for large scale optical connects within data centers. This technology uses hybrid silicon-transparent conductive oxide (Si-TCO) devices, especially micro-ring resonators...
Published: 11/26/2019   |   Inventor(s): Alan Wang
Keywords(s): multiplexing transmitter, optical interconnects
Category(s): Device, Engineering, Materials Science, Physical Science
Thermally Actuated Freshwater Recovery System for Fracking Wastewater
Technology Description This technology, a product of Oregon State University research, details a device for the efficient treatment of wastewater produced from hydraulic fracturing (fracking). Relying upon the properties of water azeotropes and humid gas thermodynamics, this system is capable of treating water with a wide range and high concentration...
Published: 11/26/2019   |   Inventor(s): Bahman Abbasi
Keywords(s): wastewater treatment
Category(s): Chemical, Device, Engineering, Physical Science, Sustainability & Cleantechnologies
High Flux Resistance Heating Rod
Technology Description This technology provides for improved simulation of nuclear reactor fuel rod pulsation for research and testing purposes. The device is a resistive heating filament capable of producing 2.5 MW/m2 of energy in a matter of tens of milliseconds with an outer diameter of less than a centimeter (0.9525 cm). This responsive heating...
Published: 11/22/2019   |   Inventor(s): Daniel LaBrier, Wade Marcum, Jim Nylander, Aaron Weiss, Salem Sharaf
Keywords(s): boiling, critical heat flux, nuclear
Category(s): Diagnostics, Device, Engineering, Physical Science, Research Tools, Sustainability & Cleantechnologies
Aqueous solution precursors for conductive oxide thin films
Technology Description Inventors at OSU have developed a method for creating conductive oxide thin films from aqueous precursor solutions that have high density, low surface roughness, high optical transmissivity, and good electronic properties. This solution processing method of preparing the conductive oxide thin films has a lower energy cost than...
Published: 11/22/2019   |   Inventor(s): Cory Perkins, Douglas Keszler
Keywords(s): aqueous chemistry, semiconductor, transparent conductive oxide thin films
Category(s): Chemical, Engineering, Materials Science, Nanoscience & Microtechnologies, Physical Science
Apparatus for Water Desalination
Technology Description This technology is a device that can utilize low-grade heat for efficient desalination with minimal fouling. It achieves zero liquid discharge through its utilization of high velocity gases and gas-solid separators to atomize highly saline water. The technology is modular, portable, and is running-cost competitive with large...
Published: 11/22/2019   |   Inventor(s): Bahman Abbasi
Keywords(s): Fluidized bed, Thermocompressor, Water desalination
Category(s): Engineering, Chemical, Device, Physical Science, Sustainability & Cleantechnologies
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