Test & Measurement

Access our comprehensive library of technical briefs on test and measurement, from engineering experts at NASA and government, university, and commercial laboratories.

Briefs: Photonics/Optics

Although smartphones and other consumer cameras are increasingly used for scientific applications, it's difficult to compare and combine data from different...

Briefs: Internet of Things
Suppose you have 10 taxis in Manhattan. What portion of the borough’s streets do they cover in a typical day?
Briefs: Test & Measurement

Wearing a sensor-packed glove while handling a variety of objects, researchers compiled a dataset that enables an AI system to recognize objects through touch alone. The information...

Briefs: Test & Measurement

NASA's Langley Research Center offers a novel lifting and precision positioning device with hybrid functional characteristics of both crane-type lifting devices and robotic manipulators. The design of the...

Briefs: Mechanical & Fluid Systems
Deployable Emergency Shutoff Device Blocks High-Velocity Fluid Flows

NASA's Marshall Space Flight Center has developed a device and method for blocking the flow of fluid from an open pipe. The device plugs, controls, and meters the flow of gases and liquids. Anchored with friction fittings, spikes, or explosively activated fasteners, the device...

Briefs: Imaging
Microfocus, Dual-Energy Imaging System Improves Contaminant Detection

Contamination of food with fragments of bone, metal, glass, or other foreign material is a major concern in the food industry. Current inspection technologies often miss very small fragments embedded in meat or other soft materials or lead to ambiguous results that require...

Briefs: Sensors/Data Acquisition

Interstitial fluid is clear, colorless, and similar to blood plasma. Continual sampling of important biomarkers in interstitial fluid could help monitor and diagnose many diseases and...

Briefs: Photonics/Optics

Accurately measuring semiconductor properties of materials in small volumes helps engineers determine the range of applications for which these materials may be suitable in the...

Briefs: Sensors/Data Acquisition
Smartphone Test Spots Poisoned Water Risk

Researchers have developed a biosensor that attaches to a smartphone and uses bacteria to detect unsafe arsenic levels. The device generates easy-to-interpret patterns similar to volume-bars that display the level of contamination.

Briefs: Wearables

A continuous-testing device was developed that samples sweat as effectively as blood but in a noninvasive way and over many hours. After examining the use of saliva, tears, and...

Briefs: Manufacturing & Prototyping

There is a need for high-volume material testing/qualification but industry and researchers are currently limited by commercially available testing devices. Most wear testers can only handle one...

Briefs: Materials

In the polymer composites industry, cure cycles are typically developed from trial-and-error or a more effective processing science approach to reduce...

Briefs: Energy

By capping liquids with graphene (an ultrathin sheet of pure carbon), researchers can easily image and analyze liquid interfaces and the surface of nanometer-scale objects...

Briefs: Sensors/Data Acquisition
New Technique Tests for Viral Infections

Currently, most U.S. medical offices and hospitals use the ELISA (enzyme-linked immunosorbent assay) test to determine whether or not a person has a viral infection. It’s a common test but ELISA’s sensitivity is relatively low, so clinicians need a fairly high number of antibodies in a person’s...

Briefs: Sensors/Data Acquisition

Experimental photonic switches developed at UC Berkeley have shown promise toward the goal of fully optical, high-capacity switching for...

Briefs: Wearables

Researchers have created highly stretchable supercapacitors for powering wearable electronics that consist of crumpled carbon nanotube (CNT) forests. The supercapacitors demonstrated solid performance...

Briefs: Imaging

Scientists at the University of Sheffield have been working with HiPERCAM, a high-speed, multicolor camera, which is capable of taking more than 1,000 images per...

Briefs: Motion Control

In discussing fatigue life, it is important to distinguish between disc springs and conical spring washers, as they differ by design and intended usage. Conical spring washers are...

Briefs: Wearables

An interdisciplinary Northwestern University team has developed a pair of soft, flexible wireless sensors that replace the tangle of wire-based sensors that currently monitor babies in hospitals’...

Briefs: Test & Measurement

Researchers at the University of California, Irvine have developed a wearable, disposable respiration monitor that provides high-fidelity readings on a...

Briefs: Test & Measurement

The difficulty in spotting minute amounts of disease circulating in the bloodstream has proven a stumbling block in the detection and treatment of cancers that advance stealthily with few...

Briefs: Test & Measurement
Systems and Methods for Correcting Optical Reflectance Measurements

Optical spectroscopy can be used to determine the concentration of chemical species in samples. The amount of light absorbed by a particular chemical species is often linearly related to its concentration through Beer’s Law. For nontransparent materials such as powders,...

Briefs: Test & Measurement

Researchers at NASA’s Johnson Space Center improved their Flash Thermography capabilities by incorporating transient and lock-in thermography. By...

Briefs: Design

Advanced driver-assistance systems and autonomous drive technologies increase the complexity of automotive integrated circuits (ICs), making it harder to ensure that...

Briefs: Test & Measurement

Microphones and stethoscopes are regularly used by physicians to detect sounds when monitoring physiological conditions. These monitors are...

Briefs: Nanotechnology

Stretchable electronics, which can be stretched, deformed and wrapped onto nonplanar curved surfaces, have attracted much attraction due to their...

Briefs: Wearables

Wearable devices have been limited to sensing signals either on the surface of the skin or right beneath it. A new wearable ultrasound patch non-invasively monitors blood pressure in arteries...

Briefs: Test & Measurement

An ingestible pill was developed that, upon reaching the stomach, quickly swells to the size of a soft, squishy ping-pong ball big enough to stay in the stomach for an...

Briefs: Manufacturing & Prototyping

Additive manufacturing, or 3D printing, is a rapidly growing field in which solid objects can be produced layer-by-layer. This...

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