Search Results - Energy

48 Results Sort By:
3D Printable Multifunctional Fibers
THE CHALLENGE 3D printing has enabled the customized production of many objects and devices, but that technology currently only creates passive units. THE SOLUTION Researchers at Virginia Tech have developed a coaxial micro-extrusion technique that enables us to take advantage of triboelectric energy generation and custom build sensors to fit anywhere....
Published: 3/5/2021   |   Inventor(s): Blake Johnson, Yuxin Tong, John Robertson, Xiaoting Jia, Ziang Feng
Keywords(s):  
Category(s): Engineering, Biotechnology, Materials, Biomedical, Devices, Diagnostic, Energy
Plasmonic Nanoparticle Layers With Controlled Orientation
Such materials have extraordinary optical and plasmonic properties that can find broad applications in light management and light-activated sensing, mechanical, electronic application. Examples include windows for energy-efficient buildings which control light transmission, electronic devices that utilize the hot electrons generated by plasmonic nanoparticles,...
Published: 6/13/2017   |   Inventor(s): Guoliang Liu, Assad Khan
Keywords(s):  
Category(s): Materials, Electrical, Energy, Engineering, Consumer Products, Computer Hardware, Process/Procedures
Composition, Structure, and Method for Fabrication of Tunable Inductors with Large Tunability
Tunability of conventional inductors is achieved either by mechanically tuning through bias magnet(s) or by adjusting the electric current in solenoids/electromagnets. These devices are typically bulky, slow, noisy, and inefficient. Various efforts have been devoted towards developing voltage tunable inductors that have large tunability and low energy...
Published: 3/30/2017   |   Inventor(s): Yongke Yan, Shashank Priya
Keywords(s):  
Category(s): Electrical, Materials, Energy
Gel for Ion Conduction Applications with Mechanical Strength
As key components of many energy storage and conversion technologies, polymer electrolyte materials allow for selective ion transport in diverse applications such as fuel cell membranes, battery separators, electro-responsive actuators, reverse-osmosis water purifiers, and solar cells. For electrochemical devices, solid-state polymer electrolyte materials...
Published: 2/20/2017   |   Inventor(s): Louis Madsen, Ying Wang
Keywords(s):  
Category(s): Chemicals, Computer Hardware, Consumer Products, Devices, Electrical, Energy, Engineering, Materials
Forced Unbalanced Method to Reduce Transient Current Unbalance in Semiconductor Power Switches
Switching power devices, specifically SiC MOSFET, has wider parameter variations (Vth, Rds(on)) due to fabrication process; therefore, when putting several MOSFET dies togther in parallel in a power module, there will be current/power unbalance when they are being used. Several publications have mentioned about using different control techniques to...
Published: 2/6/2017   |   Inventor(s): Zichen Miao, Yincan Mao, Khai Ngo, Chi Ming Wang
Keywords(s):  
Category(s): Electrical, Energy, Engineering, Transportation
Porous Carbon Fiber from Block Copolymers
Carbon fibers are used in a wide range of industries and applications including composites, catalysis, sensing, energy conversions and storage and membrane filtration. One approach to make carbon fibers utilizes electrospinning of block copolymers. However, due to challenges associated with the technique, it can be difficult to produce carbon fibers...
Published: 1/31/2017   |   Inventor(s): Guoliang Liu, Zhengping Zhou
Keywords(s):  
Category(s): Chemicals, Materials, Engineering, Energy, Electrical
Parasitic Inductances Coupling to Reduce Transient Current Unbalance in Semiconductor Power Switches
Switching power devices, specifically SiC MOSFET, has wider parameter variations (Vth, Rds(on)) due to fabrication process: therefore, when putting several MOSFET dies together in parallel in a power module, there will be current/power unbalance when they are being used. Several publications have mentioned about using different control techniques to...
Published: 1/13/2017   |   Inventor(s): Yincan Mao, Zichen Miao, Khai Ngo, Chi Ming Wang
Keywords(s):  
Category(s): Electrical, Energy, Engineering, Transportation
Use Parasitic Inductance Coupling to Eliminate Power Device Switching Operation Reliability Issues Such As Cross-Talk, Self Turn-On, and Self-Sustained Oscillation
The purpose of this invention is to show the new concept of using parasitic inductance coupling to improve SiC MOSFET switching operation reliability to prevent detrimental phenomenon such as crosstalk, self turn-on, and self-sustained oscillation from happening. Conventional methods either slow down the circuit or increase the design complexity. In...
Published: 1/13/2017   |   Inventor(s): Yincan Mao, Zichen Miao, Khai Ngo, Chi Ming Wang
Keywords(s):  
Category(s): Electrical, Energy, Engineering, Transportation
Distributed Kelvin-Source Resistance to Reduce Dynamic Power/Current Imbalance in Paralleled Semiconductor Power Switches
Switching power devices, especially SiC MOSFETs, have wide parameter variations due to fabrication process. When putting several MOSFETs in parallel, there will be current/power unbalance during switching transient. Several publications have mentioned about using different control techniques to actively reduce the unbalance. However, these controls...
Published: 1/13/2017   |   Inventor(s): Yincan Mao, Zichen Miao, Khai Ngo, Chi Ming Wang
Keywords(s):  
Category(s): Electrical, Energy, Engineering, Transportation
Composition of Textured Piezoelectric Materials for Achieving High Energy Density
Extensive research has been carried out on PZN single crystals because of their excellent dielectric and piezoelectric properties. Although PZN single crystals can be grown by the flux method, perovskite PZN ceramics cannot be synthesized by the conventional mixed-oxide method without doping. Attempts to synthesize perovskite PZN ceramics invariably...
Published: 12/22/2016   |   Inventor(s): Yongke Yan, Shashank Priya, Jin Heo, Kyunghoon Cho
Keywords(s):  
Category(s): Energy
1 2 3 4 5