Sensors & Test

University of Illinois researchers have a new low-cost method to carve delicate features onto semiconductor wafers using light – and watch as it happens. The team’s new technique can monitor a semiconductor’s surface as it is etched, in real time, with nanometer resolution. It uses...

Today’s parking assistant systems enable drivers to safely park their cars even in the narrowest of gaps. Such sophisticated parking aids – as well as manufacturing robots – that require millimeter-precision control rely on precise all-around radar distance measurement....

PML researchers have devised a novel source of portable sunlight that may fill an urgent need in renewable energy research – namely, light sources that generate a near-perfect solar spectrum to be used in testing the performance and efficiency of photovoltaic (PV) materials.The team’s...

This device provides non-invasive beat-to-beat blood pressure measurements and can be worn over the upper arm for prolonged durations. Phase and waveform analyses are performed on filtered proximal and distal photoplethysmographic (PPG) waveforms obtained from the brachial artery. The phase analysis is used...

Crewmembers returning from long duration space flight face significant challenges due to the microgravity induced inappropriate adaptations in balance/sensorimotor function. The Neuroscience Laboratory at JSC is developing a method based on stochastic...

Researchers at the Army Research Laboratory (ARL) are testing new technologies it created for the Federal Aviation Administration (FAA) that could give commercial and military maintenance programs earlier warning of problems. Condition-based maintenance, known as CBM, will get safer aircraft...

A multi-channel electrometer voltmeter that employs self-nulling lock-in detection electronics in conjunction with a mechanical resonator with non-contact voltage sensing electrodes has been developed for space-based measurement of an Internal Electrostatic Discharge...

Kansas State University researchers Hayder Rasheed, associate professor of civil engineering, and Yacoub Najjar, professor of civil engineering, are collaborating to better detect and measure damage in concrete bridges. The researchers have created a bridge health index - a rating system...