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Active Force Control of Inherent Passive Dynamics

Background Unlike moving animals, current robots do not maintain sufficient energy efficiency and robustness to (ground) disturbances. Current energy efficient passive walkers fail to handle minor disturbances in walking surface, whereas robotic solutions incorporating active control are robust to disturbances, yet inadequate in energy consumption....

Published: 6/17/2024 | Inventor(s): Jonathan Hurst, Devin Koepl

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Category(s): Engineering

Apparatus and Method for continuous Production of Semiconductor Nanoparticles

A continuous-flow injection reactor and a method for continuous material synthesis, including synthesis of nanoparticles Background Nanocrystalline semiconductors have attracted a considerable amount of attention due to their unique physiochemical properties. Recent advances in nanocrystals are having a dramatic impact on the development of next...

Published: 6/17/2024 | Inventor(s): Chih-hung Chang, Hyungdae Jin, Yu-Wei Su

Keywords(s): Advanced Technology and Manufacturing Inst. (ATAMI), Chemicals / Chemical Engineering, Electrical & Computer Engineering, Nanotechnology

Category(s): Chemical, Chemistry, Engineering, Nanoscience & Microtechnologies, Device, Materials Science, Physical Science

Metamaterial Micro-LED Device

This LED uses a hybrid nanostructure to improve efficiency and intensity while avoiding costly transfer processes Background Recently, colloidal quantum dots (QDs) have appeared as promising emissive materials for micro-LEDs that can be used to form display panels without complicated transfer processes. Despite the remarkable luminescence properties...

Published: 3/19/2024 | Inventor(s): Li-Jing Cheng

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Category(s): Engineering

Postprocessing algorithms to minimize fixed pattern artifact and reduce trigger jitter in swept source OCT

Summary OHSU developed post-processing algorithms which could minimize fixed pattern artifact and reduce trigger jitter in swept source optical coherence tomography (SS-OCT). Technology Overview Swept-source OCT has advantages of less fringe washout and faster imaging speeds compared to conventional spectraldomain detection. Therefore, it is attractive...

Published: 9/27/2023 | Inventor(s): Gangjun Liu, David Huang

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Category(s): Device, Imaging, Engineering, Software

Retinomorphic Sensors

This sensor, intended for use in computer vision applications, only produces a signal in response to changes in light conditions. Background Inspired by the way retinal cells respond to light, retinomorphic sensors are hoped to enable faster identification of moving objects than software-based approaches. Unlike conventional optical sensors, such...

Published: 3/22/2024 | Inventor(s): John Labram

Keywords(s):

Category(s): Device, Engineering, Imaging, Materials Science, Nanoscience & Microtechnologies, Physical Science, Transportation

Aluminum Oxide Thin Films from Aqueous Precursors

A patented aqueous synthesis route for making high quality alumina thin films of exceptional quality and smoothness Background Aluminum oxide has many desirable properties making it technologically important as a barrier coating, optical film, and as a dieletric thin-film component of electronic devices. The quality of the material varies with...

Published: 6/17/2024 | Inventor(s): Douglas Keszler, Wei Wang

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Category(s): Engineering

Engine Modification for Onboard NG Compression and Refueling

A dual mode engine cylinder that allows a single engine to both operate from and compress natural gas for onboard refueling Background Reciprocating internal combustion engines for passenger and commercial vehicles that are configured to operate on natural gas are commonly available. Internal combustion engines configured to operate using conventional...

Published: 6/18/2024 | Inventor(s): Christopher Hagen, Guy Babbitt

Keywords(s): Energy Recovery, Mechanical & Areospace Engineering, Transportation

Category(s): Engineering

Engine Modification for Onboard NG Compression and Refueling

Published: 2/16/2024 | Inventor(s): Christopher Hagen, Guy Babbitt, Chris Turner, Nick Echter, Kristina Weyer-Geigel

Keywords(s): Mechanical & Areospace Engineering

Category(s): Engineering

A Low-power Magnetorheological Fluid Clutch

This clutch device enables low-power, rapid, and reversible actuation of soft robotic devices to improve physical human-robot interactions Background Common implementations of soft robotics and compliant mechanisms utilize deformable materials, such as silicone or other elastomers, in their designs. Flexibility and elasticity improve overall compliance,...

Published: 5/30/2024 | Inventor(s): Joseph Davidson, Nicholas Bira

Keywords(s): clutch, electronics, electropermanent magnets, magnet arrays, magnetorheological fluid, Mechanical & Areospace Engineering, torque

Category(s): Engineering

Cobalt and Nickel FREE Cathodes for Li-Ion Batteries

A composite copper sulfide - alkali metal salt cathode composition for high efficiency, high density alkali metal batteries Background High energy rechargeable batteries are in ever-increasing demand to power consumer electronics and electric vehicles. Although lithium-ion batteries (LIBs) have been successfully used for portable electronics in the...

Published: 8/25/2023 | Inventor(s): Xiulei (david) Ji, Mingliang Yu

Keywords(s): Batteries

Category(s): Engineering

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