Precision thermal control technology to enable thermally stable telescopes

Programmable Valves Enable Both Precision Motion Control and Energy Saving

Conventional electro-hydraulic precision motion control systems are controlled by either servo valves or proportional directional control valves. Neither of the valves are able to control the pressures at the two cylinder chambers independently or to use the regeneration flow. The result is that while precision motion control is possible, significant energy saving is not. In order to save energ...

Precision and automation weed control technology

Thermally stable, oxidation resistant capping technology for TiÕAl ohmic contacts to n-GaN

The intermetallic TiAl3 has been used as a thermally stable cap for Ti/Al ohmic contacts to n-GaN. The electrical performance of the TiAl3-capped contact is nearly the same as that of a standard Ti/Al/Ni/Au contact processed on the same substrate, but the Ti/Al/TiAl3 contact’s performance is optimized at a much lower temperature. The Ti/Al/TiAl3 contact achieved a lowest specific contact resist...

Performance Evaluation to Enable Institutionalisation of Technology

Technology implementation involves understanding of the structure of the technology, the reasons for choosing particular technology and its implementation approaches, assumptions about the context in which technology is to be used, and previous experiences with technology adoption. However, information systems implementation in engineering organizations generally disregards human, contextual, a...

Thermally Stable Gel Polymer Electrolytes

Hyperstructured Organic Materials Research Center, Department of Chemical Engineering, Sogang University, Seoul 121-742, Korea Samsung SDI Company, Limited, Energy Development Team, Corporate Research and Development Center, Yongin-City, Kyonggi-Do 449-742, Korea Battery and Fuel Cell Research Center, Korea Institute of Science and Technology, Seoul 130-650, Korea Center for Electrochemical Eng...