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163 Results for 'Engineering'
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Technology
Reducing DC-DC Converter Loss for More Efficient Cars
DC-DC converters are used in a variety of devices to raise or lower voltage. They are used in the power systems of hybrid and electric vehicles to boost the battery’s output voltage. In these system...
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Robert Lorenz, Chi-Ming Wang, Masaki Wasekura | P130119US01
Technology
Dynamic Predictor Improves Machine Control
Articulated mechanisms, such as walking robots or robotic arms, can be understood as a set of rigid links connected to each other by joints. The joints are put into motion using motors, sensors that i...
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Paul Milenkovic | P130307US01
Technology
Improved Compression Ignition Combustion in Rotary Engines for Higher Efficiency and Lower Pollutant Emissions
UW–Madison researchers previously disclosed a Reactivity Controlled Compression Ignition (RCCI) system for improving fuel efficiency and lowering emissions in compression ignition, internal combusti...
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Rolf Reitz, Sage Kokjohn | P110320US01
Technology
New Flexible Mechanical Structure for Improved Wireless Power Transmission
Permanent magnet synchronous machines are one type of electrical rotating machine (i.e., motor or generator), which are common in hybrid vehicles and wind turbines. Although these machines have a high...
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Daniel Ludois, Justin Reed, Kyle Hanson | P110321US01
Technology
Simplified Anisotropic Graphene Conductor Emits Terahertz Radiation
Terahertz (THz) electromagnetic radiation penetrates cloth, paper and partially into the skin without the damaging effects of X-rays. Portable electronic devices capable of generating this radiation w...
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Max Lagally, Francesca Cavallo, Richard Rojas-Delgado | P130002US01
Technology
Smoother Surfaces with Pulsed Laser Polishing
Pulsed laser polishing (PLP) helps smooth metal and other material. The technique employs lasers to irradiate a surface, melting small areas with each pulse. In these molten areas, rough surface protr...
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Frank Pfefferkorn, Xiaochun Li, Neil Duffie, Chao Ma, Venkata Madhukanth Vadali | P130168US01
Technology
Ultrasonic Welding with Real-Time Quality Control
In ultrasonic welding, work pieces are clamped between a horn and anvil and then joined using high-frequency vibration energy. Friction and heat between the surfaces causes them to soften and meld tog...
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Xiaochun Li, Hongseok Choi, Hang Li, Wayne Cai, Jeff Abell, Jingzhou Zhao | P120081US01
Technology
Patch Clamp Providing On-Chip Thermal Control
Approximately half of all diseases affect the function of ion channels in cell membranes. Testing the flow of ions and molecules through these membranes clearly is vital to drug discovery and research...
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Robert Blick | P110325US01
Technology
Movement Predictor for Real-Time Robotics Control
Articulated mechanisms like robot arms can be understood as a set of rigid segments linked by joints. The motions of each joint are related in a type of movement chain. For example, a wrist joint may ...
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Paul Milenkovic | P100351US02
Technology
Radial 3-D Printer for Improved Prototyping Efficiency
3-D printing, or rapid prototyping, makes use of additive manufacturing to produce a 3-D object. Additive manufacturing is the transformation of a virtual design into a physical object by creating suc...
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Thomas (Rock) Mackie, Nathan Patterson, Benjamin Cox, Nathan Schumacher, George Petry | P120012US01
Technology
New Capacitive Method for More Efficient Power Generation
Many commonly used machines require moving and stationary parts to generate electricity. Conventional rotating electrical machines utilize magnetic fields and/or a change in inductance between moving ...
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Daniel Ludois | P120094US01
Technology
New Rheometer and Method for Efficiently Measuring Yield Stress in Biomass
The finite nature of fossil fuels along with rising oil prices has prompted a need for alternative fuel sources. One alternative involves the conversion of biomass materials into biofuel. But current ...
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Daniel Klingenberg, Joseph Samaniuk, Thatcher Root, Charles Scott | P110311US01
Technology
Engine Combustion Control at Low Loads with Reactivity Controlled Compression Ignition Combustion
Diesel engines, also known as compression ignition engines, are among the most energy-efficient engines available, with high power output per fuel consumption. Unfortunately, they are also among the �...
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Rolf Reitz, Reed Hanson, Derek Splitter, Sage Kokjohn | P110092US01
Technology
Improved Engine Carburetion with Porous Walled Fuel Tube
A carburetor is used to generate the air/fuel mixture in engines by drawing air through a venturi during the intake stroke of an engine. The influx of air lowers the pressure, drawing fuel from a smal...
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Timothy Shedd, Wayne Staats, Terry Hendricks | P06186US
Technology
Nanoscale Electromagnetic Radiation Device Using Serpentine Conductor
Electromagnetic radiation may be generated by the acceleration or deceleration of charged particles such as electrons. Synchrotron radiation occurs when the trajectory of high-speed electrons is curve...
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Robert Blick, Max Lagally | P08031US02
Technology
Brushless Synchronous Motor Utilizing Third Harmonic Excitation for Power Transfer to Rotor
Existing power machines provide the ability to capture power from a mechanically rotating source, such as a wind turbine. One example of such power machines is the synchronous motor, which contains a ...
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Thomas Lipo | P100315US01
Technology
Permanent Magnet Synchronous Motor Self-Sensing Drive System
Permanent magnet synchronous motors (PMSM) provide torque through the interaction of a magnetic field generated by one or more armature coils and one or more permanent magnetic elements. These motors ...
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Robert Lorenz, Thomas Jahns, Takahiro Suzuki, Shih-Chin Yang | P100196US01
Technology
Improved Nanoscale Aperture Fabrication Technique for Mass Production of Patch Clamp Plate Arrays
Patch clamping is a well known method for measuring the flow of ions and molecules through ion channels imbedded in the cellular membrane. The method employs micropipettes, or similar microscale ape...
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Robert Blick, Minrui Yu, Hua Qin, Hyun-Seok Kim | P07471US
Technology
High-Frequency Bridge Suspended Diode for Power Generation from High Frequency Microwave Sources
Diodes are two-terminal electrical devices that only allow electrical current to flow in one direction. Diodes are used often in electrical circuits to extract a direct current from an alternating cur...
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Robert Blick, Chulki Kim, Jonghoo Park | P100160US01
Technology
Two-Axis, Non-Singular, Revolute Joint Robotic Wrist for Industrial and Research Applications
Robotic systems have many industrial and research applications, such as in the automotive industry. These robotic systems generally require six degrees of freedom (DOF), which can be broken up into ...
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Paul Milenkovic | P08337US
Technology
Method of Orientating Fillers in Polymer Composite Materials
Over the past decade, polymer composites have emerged as a new class of high performance materials with unique and desirable material properties such as strength, weight and rigidity. These composites...
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Xiaochun Li, Lih-Sheng Turng, Larry Holmes, Yiyan Peng | P09239US
Technology
Metal Silicide Nanowires and Methods for Their Production
As electronic gadgets continue to get smaller, tiny metal silicide nanowires may one day be used as fundamental building blocks in devices from cell phones to lasers. Metal silicides already are int...
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Song Jin, Andrew Schmitt, Yipu Song | P06215US
Technology
Nanoelectromechanical Switch in Co-Planar Waveguide
Microelectromechanical systems (MEMS) and nanoelectromechanical systems (NEMS) have been used to create mechanical resonators for switching, filtering and other purposes in electrical systems. NEMS/ME...
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Robert Blick, Hua Qin, Hyun-Seok Kim | P07084US
Technology
Plasma-Enhanced Functionalization of Carbon-Containing Substrates
Before DNA or proteins can be attached to a surface during the making of microarrays, the surface must be functionalized, i.e., chemically prepared to carry functional groups capable of binding to ...
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Ferencz Denes, Sorin Manolache, Luis Emilio Cruz-Barba, Max Lagally, Bradley Larson | P03334US
Technology
Splice System to Connect Reinforcement Bars in Concrete Assemblies
Concrete normally is a brittle material until reinforcement bars, or rebar, are incorporated to create a stronger and more flexible material referred to as “reinforced concrete.” Many concrete s...
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Michael Oliva, Lawrence Bank | P08344US02