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131 Results for 'Semiconductors & Integrated Circuits'
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Technology
Improved High-Power Transistor Amplifier for Wireless Communications
The demand for smaller wireless communication devices that use less power is growing. In particular, radio frequency identification (RFID) systems require small, low-power transmitters to label or &ld...
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Zhenqiang Ma, Guogong Wang, Guoxuan Qin | P08017US
Technology
Improved Method for Density Multiplication and Lithography via Directed Block Copolymer Assembly
The creation and replication of nanoscale patterns is becoming increasingly important for the development of new electromechanical, chemical and biological devices at the micro- and nanoscale. F...
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Paul Nealey, Huiman Kang, Francois Detcheverry, Juan DePablo, Ricardo Ruiz, Thomas R. Albrecht | P09061US
Technology
Thinner Reflector Stacks for Vertical-Cavity Surface-Emitting Lasers
Distributed Bragg reflectors (DBRs) are found in photodetectors, solar cells and other optical sensors. Stacks of DBRs are incorporated in vertical-cavity surface emitting lasers (VCSELs), which are a...
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Zhenqiang Ma, Jung-Hun Seo | P140364US01
Technology
Flexible Thin-Film Transistors for Mass Production
Flexible electronics such as pliant displays, wearable electronics and new biomedical devices have gained popularity in recent years. Such devices are mounted on a supple plastic support layer and off...
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Zhenqiang Ma, Jung-Hun Seo | P150093US01
Technology
Improved Nanotube Film for Field Effect Transistors and More
Semiconducting single-walled carbon nanotubes (s-SWCNTs) are key building blocks for nanoscale technologies given their interesting physical and chemical properties. They are especially promising for ...
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Michael Arnold, Harold Evensen, Gerald Brady, Padma Gopalan, Yongho Joo | P150242US01
Technology
Microcavity Method for Single Molecule Spectroscopy
Single molecule spectroscopy and microscopy – a popular tool for biological, biophysical and chemical characterization – generally requires the use of fluorescent molecules. Researchers at UW–M...
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Randall Goldsmith, Kevin Heylman | P140153US03
Technology
Zinc Oxide Thin Films Have Higher Electron Mobility
Zinc oxide (ZnO) is an inorganic semiconductor with applications in large area photovoltaics and transparent electronics. Producing zinc oxide thin films with excellent electronic properties is challe...
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Paul Evans, Josef Spalenka | P130004US02
Technology
Wrapper Cell for Hierarchical System-on-Chip Testing
Complex integrated circuits must be individually tested during manufacturing. System-on-chip (SoC) circuits combine multiple functional elements on a single substrate. For example, such systems may co...
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Kewal Saluja, Kyuchull Kim | P110103US01
Technology
Ferroelectric Thin Films for Improving Memory Technology
The semiconductor industry constantly is seeking new methods to improve memory speed and efficiency that are compatible with large-scale fabrication processes and environmentally-friendly.
Currently,...
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Chang-Beom Eom, Ho Won Jang | P08062US
Technology
Strain-Tunable Light Emitting Diodes Using Germanium
Germanium (Ge), a group-IV semiconductor material, is crucial to many established and potential technologies. In optoelectronics, Ge has been used as a photodetector material for on-chip data distribu...
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Max Lagally, Jose Sanchez Perez | P140041US01
Technology
Tuning Optical Microcavities
A whispering gallery mode (WGM) is a type of electromagnetic wave that travels around a concave surface. Such waves can propagate at the edge of a very small structure called an optical microcavity. W...
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Randall Goldsmith, Kevin Heylman | P140153US01
Technology
Method for Double-Sided Processing of Thin-Film Single-Crystalline Electronics
Future advances in semiconductor electronics for computers will require three-dimensional (3-D) integrated circuits that are not limited by the physics of thin film processing. In addition, flexible e...
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Paul Evans, Hao-Chih Yuan, Guogong Wang, Mark Eriksson, Max Lagally, Zhenqiang Ma | P06047US
Technology
Improved Fabrication of Strained Silicon Multilayer Structures
Chips made of strained silicon (Si) have higher electron mobility than chips made of unstrained Si, enabling the fabrication of faster semiconductor devices. Current methods of producing strained Si r...
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Max Lagally, Michelle Kelly, Donald Savage | P04286US
Technology
Directed Self-Assembly of Block Copolymers to Make Bit Patterned Media
In magnetic recording bit patterned media (BPM), each magnetic bit is physically isolated in the form of nanometer-scale islands. These features can be fabricated by nano-imprint lithography in which ...
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Paul Nealey, Guoliang Liu, Ricardo Ruiz, Elizabeth Dobisz | P110093US01
Technology
Masks for Growing Nanopatterned Polymer Brushes
Polymer brushes are a broad class of materials made of polymer chains tethered at one end to a substrate. These brushes are able to tune and modify surface properties like bioadhesion and wettability....
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Padma Gopalan, Daniel Sweat, Myungwoong Kim, Eungnak Han | P130118US01
Technology
New Surface-Modifying Film for BCP Formation
Block copolymers (BCPs) self-assemble into well-defined, highly regular and dense nanostructures. Such BCP arrays are useful for fabricating electronic devices like magnetic storage media, quantum dot...
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Padma Gopalan, Eungnak Han, Myungwoong Kim | P130124US01
Technology
Degradable Neutral Layer for BCP Lithography
The lithographic process is one of the most powerful technologies of the digital electronics era. Lithography allows hundreds of millions of components to be fabricated on a single chip with pattern f...
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Padma Gopalan, Daniel Sweat, Jonathan Choi, Myungwoong Kim | P130174US01
Technology
Reusable Virtual Substrates for Growing Semiconductor Devices
‘Virtual substrates’ comprise an underlying growth substrate and one or more metamorphic buffer layers (MBLs) made of semiconductor alloy. The MBL is graded so that its lattice constant in...
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Thomas Kuech, Kevin Schulte, Luke Mawst, Tae Wan Kim, Brian Zutter | P130206US01
Technology
Patterned Graphene for Field Effect Transistors
Interest in graphene has surged due to its outstanding electrical properties. Graphene is a two-dimensional, carbon-based material with high tensile strength, stiffness, optical transparency and therm...
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Michael Arnold, Padma Gopalan, Nathaniel Safron, Myungwoong Kim, Jonathan Choi | P110242US01
Technology
Flexible Thin-Film Transistors Are Doped and Strained
Fast, flexible electronics operating at radio frequencies (greater than 1 GHz) are attractive because of their versatility, power savings and wide applicability. Uses include wireless and high-speed c...
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Zhenqiang Ma, Max Lagally, Jung-Hun Seo | P130145US01
Technology
Improved Block Copolymer Engineering for Directed Self-Assembly of Thin Films
Block copolymers (BCPs) are a class of polymers synthesized from two or more bonded units. Forming BCPs in bulk, and turning the material into thin film, can produce nanoscale structures useful to man...
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Paul Nealey, Frank Bates, Sangwon Kim | P110274US02
Technology
Smoother Waveguides for More Efficient Nonlinear Frequency Conversion
For many applications – from remote sensing to laser displays – it is necessary to convert the frequency of light via nonlinear interaction in semiconductor materials. Waveguide devices accomplish...
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Dan Botez, Thomas Kuech, Luke Mawst, Steven Ruder | P120326US01
Technology
Bottom-Up Patterning of Smooth Graphene Microstructures and Nanostructures
One of the strongest, lightest and most conductive materials known, graphene is an atom-thick carbon film with unrivaled high-tech potential. It is stronger than diamond but capable of bending like ru...
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Michael Arnold, Padma Gopalan, Nathaniel Safron, Myungwoong Kim | P110245US02
Technology
Semiconductor Interconnect Design for Small, Inexpensive, Integrated Current Sensing with Improved Reliability
Semiconductors, which regulate power flow in many modern electronic devices, use interconnects such as bond wires or lead frames to integrate different components: chip, substrate and terminals. Inter...
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Robert Lorenz, Patrick Schneider, Jonathan Hoffman | P120254US01
Technology
Making Large-Scale Nanopatterned Arrays by Streamlined Roll-to-Roll Printing
Promising advances in areas like solar cells and photonic crystals are utilizing optical components with nanoscale dimensions. Unique in their ability to collect and manipulate light, these structures...
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Kevin Turner, David Grierson | P120088US01