Energy Band Gap Lab

Conduct Research

• Wired 8.09: Bright Switch
  Already, labs in 27 countries are pursuing research into photonic band-gap crystals. In the US, Darpa has issued millions in research grants. At least eight government-funded facilities and more than 40 universities are involved, along with corporations such as NEC, Rockwell, Lucent, and Agilent...
• Basic Principles of Silicon Detectors
  to an electrical current. The root of the theory behind this phenomenon is a small energy gap between the valence and conduction bands of the detector. When light, with enough energy to excite an electron from the valence to the conduction band, is incident upon the detector, the resulting accumulation...
• An Overview of Electromagnetic and Lightning Induced Voltage Transients (.pdf)
  This Note is an overview of the sources and nature of various transient overvoltages, and the problems that may result. Transients in electrical circuits result from the sudden release of previously stored energy. This energy can be stored within the circuit and released by a voluntary...
• MICRO: Optimizing polymers to increase pellicle lifetime and transmission for 157-nm lithography
  . Using Vacuum Ultraviolet Spectroscopic Characterization for Materials Design. Vacuum ultraviolet (VUV) spectroscopy, including both transmission and reflectance measurements, has become an established technique for electronic structure studies of large band-gap, insulating materials...
• Wired 8.09: Bright Switch
  photonic quantum energy states, in effect, hit the wall. While most colors in the spectrum penetrate freely, a forbidden few are treated like gate-crashers. With these bands of light, the crystal behaves like a mirror, even though it's full of holes. This photonic band-gap crystal is the optical...
• Eye-in-the-Sky Made More Useful to Farmers
  was equipped with a frame holding four video cameras. Three of the cameras were filtered to allow each to receive only one kind of light on the recording tape near-infrared, red, or yellow-green. The fourth camera measured the far-infrared energy that is related to surface temperature. The goal of MADMAC...
• Wired 8.09: Bright Switch
  referred to as chips. They go by the cumbersome and slightly misleading term photonic band-gap crystals - they aren't crystalline on an atomic level, the way salt crystals or quartz crystals are. Instead, they're built on a slightly larger scale out of clusters of atoms arrayed in a regular pattern...
• Can you still see me now?
  of materials for their seals and gaskets. The materials must manage damaging-impact energy yet be highly compressible so that they exert little stress on the thinnest of housings. Seals must also maintain integrity under compression to effectively keep out contaminants over an extended period and in a range...
• MICRO: The Hot Button
  it is semiconducting or metallic, and the diameter of the CNT, which determines the band-gap energy and some other characteristics. So laying out the CNT in a controllable manner and making the CNT with controllable characteristics, these are the two things that must be done. CNTs, right now, are grown...
• World Weather: The Soil Has a Role Too
  Department of Energy (DOE) Cessna Citation. Microwave radiometers mounted on this boom truck can quickly measure soil moisture. (K8019-11) DOE's Cessna, flown at 16,000 feet, carried a prototype of a thermal-infrared instrument that maps soil surface temperature. A Mission to Planet Earth...

Engineering Web Search: Energy Band Gap Lab