How much hysteresis you need is a function of the process requirements and control system.More>>

A new gated-metal oxide CO sensor design requires no heated substrate. The trick to achieving this was the addition of a simple gate bias. The device's operating specs are impressive: ?60?F to 140?F, sensitivity of 0?1000 ppm, and response time of <5 s. It has no cross-sensitivity to other...More>>

Scientists at NIST have created 1-cm-long polymer nanotubes that can maintain their shape indefinitely. They could serve as channels for chemicals in nanofluidic reactor devices or as minuscule hypodermic needles for injecting single molecules."More>>

To treat a disease you first have to diagnose it. Although the proclivity toward developing Alzheimer's disease has been determined to be genetic, diagnosing it has so far been possible only by autopsy. This is the primary reason that no cure has been demonstrated effective. Furthermore, a...More>>

Two recent market studies quantify the market for MEMS technology very differently. But both predict strong growth. And neither seems to touch on what I view as the true potential for MEMS."More>>

Magnetic field sensors are widely used to provide information about rotational speed or position in diverse automotive applications, such as wheel speed sensing (used in conjunction with antilock braking systems [ABS]), engine management, transmission speed sensing.More>>

Receiver Sensitivity and Signal LevelsMore>>

Integration isn't a passing fad; it's a practical necessity. It builds on the interconnectivity begun by digital communications and networking to deliver greater efficiency."More>>

One remaining difficulty is the high common-mode impedance, which can make the inputs susceptible to noise."More>>

The addition of five copper ridges to existing superconducting transition-edge sensors (TES) could prove of great value to astronomers and materials scientists. These enhanced experimental X-ray sensors will help determine the temperature and motion of matter in space, and, in semiconductor...More>>