Search Results - Engineering

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Low-Cost Method for Determining the Surface Free Energy of Micro-particles and Nanoparticles
Low-Cost Method for Determining the Surface Free Energy of Micro-particles and NanoparticlesCase ID:19/0027BackgroundSurface free energy (SFE) of micro- and nanoparticles plays a crucial role in determining the hydrophobicity and wettability of the particles. To date, however, there are no easy-to-use methods for determining the SFE of particles.Te...
Published: 5/21/2019   |   Inventor(s): Yi Zuo
Category(s): Materials Science, Engineering, Physics
Ambient Energy Harvesting Device with Charge-Carrying Movable Electrode
Ambient Energy Harvesting Device with Charge-Carrying Movable ElectrodeCase ID:01120Background Advances in low-power electronics and distributed systems have generated interest in small-scale power supply systems that harness energy from ambient sources. Low-power and distributed systems have also added to the portability of electronic devices, les...
Published: 5/21/2019   |   Inventor(s): Tianwei (david) Ma, Enze Ma, Jian (jimmy) Yu
Category(s): Energy, Engineering, Environmental Sciences
Dynamic Reactive Compensation
Dynamic Reactive Compensation The voltage profile of distribution feeders in the traditional power system is illustrated in Figure 1 where the red series represents the primary feeder voltage and the red points as the customer service voltage. The voltage starts out high at the beginning of the feeder (substation transformer) and drops as power fl...
Published: 4/12/2019   |   Inventor(s): Leon Roose, Staci Sadoyama, Hsun Jou, Marc Matsuura
Keywords(s): Energy, Energy:Conservation Voltage Reduction, Energy:Voltage Optimization, Engineering, Engineering:Voltage Regulation
Category(s): Engineering, Energy
The ZOG Method: True Printed Circuit Boards
A novel way to fabricate printed circuit boards without the need of expensive equipment or toxic chemicals. The circuit board is printed using a 3D printer and liquid metal is used for the circuit traces. Circuits are packaged with plastic and sealed by default. Multilayer PCBs can also be fabricated without the need of a multi-ton press. This m...
Published: 1/31/2019   |   Inventor(s): David Garmire, Jie Zhou, Tamra Oyama
Category(s): Engineering
Distribution Grid Power Monitor
DescriptionA powerful platform for high-resolution data acquisition from distribution service transformers, with the potential to control DERS (distributed energy resources)BackgroundIn order to improve the resiliency of the electric grid and support increasing demand for distributed photovoltaics (PV), utilities are seeking to establish greater re...
Published: 1/30/2019   |   Inventor(s): Kevin Davies, Thai Tran, Saeed Sepasi, Leon Roose
Keywords(s): Energy:Grid, Energy:Solar, Energy:Volt/Var Optimization, Energy:Voltage Optimization, Engineering:Electrical, Engineering:Voltage Regulation, Real-time analysis, Utility
Category(s): Engineering, Energy
Environmental Sensor Array
Environmental Sensor ArrayDesigned to expand the capabilities of fuel cellsRef. UH-1045 BackgroundIntegrating fuel cell technology into transportation has the potential to reduce dependency on fossil fuels, reduce global warming emissions and improve air quality for the majority of urban citizens. However, air quality presents a challenge to reliab...
Published: 1/11/2019   |   Inventor(s): Scott Higgins, James (Mitch) Ewan
Category(s): Engineering, Energy
Polymer Matrix Composites with Nano-Scale Reinforcements
BackgroundEver since the commercial introduction of thermoset polymers, such as epoxy resins, as matrix materials for advanced composites, significant efforts have been undertaken to improve their ductility to delay crack initiations and their growths, and, in turn, to delay delamination and fracture. Efforts include the dispersion of rubber particl...
Published: 12/21/2018   |   Inventor(s): Mehrdad Nejhad, Vinod Veedu
Category(s): Engineering, Nanotechnology
3-Dimensionally Reinforced Nanocomposites
BackgroundThe main advantage of composites and nanocomposites, in addition to their high specific strength and stiffness, is their ability to be tailored towards a specific loading condition, i.e., placing the load carrying fibers (or, e.g., Carbon Nanotubes, CNTs) where the loads and stresses are. Traditional composites designed for in-plane loading ...
Published: 12/21/2018   |   Inventor(s): Mehrdad Nejhad, Vinod Veedu, Anyuan Cao, Pulickel Ajayan
Category(s): Engineering, Materials Science
Long Range Remote Chemical Detection Using Compact Spectroscopy System and Low Laser Pulse Energy
Remote detection of chemicals is highly desirable for homeland security, environmental and NASA planetary exploration programs. Researchers at the University of Hawaii have designed a long range remote chemical detection system that significantly improves upon current capabilities in this field. The technology combines Raman + LIBS spectroscopy int...
Published: 1/22/2018   |   Inventor(s): Anupam Misra, Tayro Acosta-Maeda, John Porter
Category(s): Engineering, Environmental Sciences, Optics
Ferrofluidic Actuation of Liquid for Radio-Frequency Applications
Researchers at the University of Hawaii describe liquid-metal based reconfigurable radio-frequency (RF) circuits having improved performance characteristics. The improvements are made possible through a new method for actuating liquid metal utilizing a hydrocarbon-based ferrofluid as an alternative to aqueous acidic or basic solutions. The ferroflu...
Published: 1/3/2018   |   Inventor(s): Anthony Combs, Aaron Ohta, Wayne Shiroma
Category(s): Devices, Engineering
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