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The Contact-Growth Method - Direct and Pre-Patterned Synthesis of 2-Dimensional Heterostructures Background TMD monolayers are atomically thin semiconductors having direct bandgaps. These monolayers are useful for various types of semiconductors such as photodetectors, optical modulators, solar cells, light-emitting diodes (“LED”), flexible displays, transparent displays, etc. Although there are various useful applications for monolayer... Published: 4/26/2021   |   Inventor(s): Eui-Hyeok Yang, KyungNam Kang Keywords(s):   Category(s): Materials / Manufacturing & Processes

High-Throughput Graphene Printing And Selective Transfer Using A Localized Laser Heating Technique Background:Considering the extraordinary properties of graphene, the capability to produce high-quality graphene on a large scale has become a key factor in commercializing graphene-based technologies. A reliable, fast and economical fabrication technique is necessary for the commercialization of graphene-based products. Current techniques for producing... Published: 4/26/2021   |   Inventor(s): Vikram Patil, Youn-Su Kim, Kitu Kumar, Eui-Hyeok Yang Keywords(s):   Category(s): Materials / Manufacturing & Processes

Popcorn-Like Growth Of Graphene-Carbon Nanotube Multi-Stack Hybrid 3D Architecture For Energy Storage Devices Background:Energy storage devices, such as supercapacitors and lithium ion batteries comprise active materials, electrolytes and separators. For optimal energy storage, active materials should have large surface areas, chemical and mechanical stability, and good electrical properties, especially electrical conductivity. As such, carbon-based materials... Published: 4/26/2021   |   Inventor(s): Youn-Su Kim, Kitu Kumar, Eui-Hyeok Yang, Frank Fisher Keywords(s):   Category(s): Sensing Devices / Technology

A High-Throughput Local Oxidation Nanopatterning Process In a lithographic process suitable for use in the manufacture of electronic components, oxidative reactions are employed to reproducibly fabricate patterns having micro- or nano-scale dimensions. An electrically-conductive template is fabricated to have a nanometer-scale sharp edge and describe a pattern having a micron-scale length. The oxidative reaction... Published: 4/26/2021   |   Inventor(s): Eui-Hyeok Yang, Kitu Kumar Keywords(s):   Category(s): Materials / Manufacturing & Processes

Phase Coherent Solid State Electron Gyroscope Array INVENTION SUMMARY:An apparatus and method is disclosed which may comprise an electron gyroscope, which may comprise an interferometer array which may comprise interferometer rings formed from a sheet of graphene. Each interferometer ring in the interferometer array may have a half-circumference shorter in length than the ballistic length for an electron... Published: 4/26/2021   |   Inventor(s): Christopher Search, Eui-Hyeok Yang, Stefan Strauf Keywords(s):   Category(s): Sensing Devices / Technology

Marangoni Stress-Driven Droplet Manipulation On Smart Polymers For Ultra-Low Voltage Digital Microfluidics An ultra-low voltage microfluidic device for manipulating droplets of liquid by inducing Marangoni stress therein includes a plurality of smart-polymer electrodes having films of smart polymer exposed at their surfaces. The surface of the smart polymer becomes hydrophobic or hydrophilic in response to different electromagnetic potentials. The smart... Published: 4/26/2021   |   Inventor(s): Eui-Hyeok Yang, Yao-Tsan Tsai, Chang-Hwan Choi Keywords(s):   Category(s): Sensing Devices / Technology

Active Bandgap Tuning Of Materials For Tunable Photodetection Applications Background:Photodetectors comprise layers of photosensitive materials that can detect incident light of certain photon energies (which may also be expressed as wavelengths) related to the bandgap of the material. A bandgap is defined as the gap, expressed as an energy, between the lowest point of the conduction band and the highest point of the valence... Published: 4/26/2021   |   Inventor(s): Vikram Patil, Eui-Hyeok Yang, Stefan Strauf Keywords(s):   Category(s): Sensing Devices / Technology