Sensors & Test

Measuring Earthquakes and Tsunamis with Fiber-Optic Networks

Scientists from the Institute of Geophysics at ETH Zurich, working together with the Swiss Federal Institute of Metrology (METAS), have found an inexpensive method that enables accurate earthquake measurements even on the ocean floor and in less developed countries.

Photoelectric Sensor Essentials

Photoelectric (PE) sensors represent a discrete sensor technology widely used throughout industry. They use the presence or absence of light to provide an on/off output to supervisory automation and monitoring systems, and are often the better choice for sensing manufacturing products.

Optical Concentration Sensor for Liquid Solution

The optical concentration sensor has been demonstrated to effectively measure pretreat concentrations in both still and flowing liquid conditions and is resistant to contamination issues as necessitated by the UWMS.

Single Drop of Ethanol to Revolutionize Nanosensor Production

Macquarie University engineers have developed a new technique to make the manufacturing of nanosensors far less carbon-intensive, much cheaper, more efficient, and more versatile — substantially improving a key process in this trillion-dollar global industry.

Dynamic Hydrogel Makes Soft Robot Components and Building Blocks

Using a new type of dual-polymer material capable of responding dynamically to its environment, researchers have developed a set of modular hydrogel components that could be useful in a variety of soft robotic and biomedical applications.

A Temperature-Modulating Robotic System

A research team has developed a robotic system that can be unobtrusively built into the frame of a standard honeybee hive. Composed of an array of thermal sensors and actuators, the system measures and modulates honeybee behavior through localized temperature variations.

A Precision Arm for Mini Robots

A team at ETH Zurich has developed an ultrasonically actuated glass needle that can be attached to a robotic arm. This lets them pump and mix minuscule amounts of liquid and trap particles.

Building More Dexterous Robots

MIT researchers have developed a camera-based touch sensor that is long, curved, and shaped like a human finger. Their device provides high-resolution tactile sensing over a large area. The sensor, called the GelSight Svelte, uses two mirrors to reflect and refract light.

Smart Soft Sensor Improves Human-Robot Interaction

A new soft sensor developed by UBC and Honda researchers opens the door to a wide range of applications in robotics and prosthetics. When applied to the surface of a prosthetic arm or a robotic limb, the sensor skin provides touch sensitivity and dexterity, enabling tasks that can be difficult for machines such as picking up a piece of soft fruit.

New Algorithm Keeps Drones from Colliding in Midair

When multiple drones are working together in the same airspace, perhaps spraying pesticide over a field of corn, there’s a risk they might crash into each other. To help avoid these costly crashes, MIT researchers developed a system called MADER in 2020.

Optimal Information About the Invisible

Researcher are finding ways to estimate a target location when light gets deflected by a disordered structure.

Cell Labelling Method from Microscopy Adapted for Use in Whole-Body Imaging

Processes and structures within the body that are normally hidden from the eye can be made visible through medical imaging. Scientists use imaging to investigate...

Laser Attack Blinds Autonomous Vehicles, Deleting Pedestrians and Confusing Cars

Research reveals that expertly timed lasers shined at an approaching LIDAR system can create a blind spot in front of the vehicle.

Quantum-Limit-Approaching Chemical Sensing Chip

Study shows improvements to chemical sensing chip that aims to quickly and accurately identify drugs and other trace chemicals.

An Ingestible Sensor for Diagnosing GI Motility Disorders

Engineers have demonstrated an ingestible sensor whose location can be monitored as it moves through the digestive tract, an advance that could help doctors more easily diagnose gastrointestinal motility disorders such as constipation, gastroesophageal reflux disease, and gastroparesis.

A New Method to Measure the Motion of Soft Robots

Prompted by conversations regarding soft robotics, a research group has developed a design for a new sensor using 3D electrodes inspired by the folding patterns used in origami, able to measure a strain range of up to three times higher than a typical sensor.

Silicon Nose: Small Sensor ‘Smells’ Incipient Seizures

In people with epilepsy, seizure-alert dogs can smell small changes in body chemistry and warn of an impending seizure an hour or more before it occurs. Inspired by this feat of nature, a team of researchers has developed a way to replicate that ability with technology.

Capturing the Movements of Dancers Has Wide Applications

Praneeth Namburi is a research scientist at the MIT.nano Immersion Lab. One project that bridges the physical and digital worlds uses VR simulations to train people to fabricate computer chips and semiconductors.

Calculation of Unsteady Aerodynamic Loads Using Fast-Response Pressure-Sensitive Paint

NASA Ames has developed a new state-of-the-art method for measuring fluctuating aerodynamic-induced pressures on wind tunnel models using unsteady Pressure Sensitive Paint (uPSP).

New Technology Offers Better Diagnosis of Dizziness

The vibrating device uses bone-conducted sounds to achieve better results.

Easy, Accurate, Low-Cost Detection of Fluoride in Water

Researchers from Northwestern University have collaborated on the implementation of an accurate, low-cost, and easy-to-use test for detecting toxic levels of fluoride in water. The new biosensor device has been field tested in Kenya.

Micro-Device Detects Bacteria and Viruses

Researchers were able to successfully isolate bacteria from various fluids with a microparticle-based matrix filter. The filter trapped particles in small voids in the device, providing a larger concentration of bacteria for analysis.

Air Monitor Can Detect COVID-19 Variants in Five Minutes

By combining recent advances in aerosol sampling technology and an ultrasensitive biosensing technique, researchers at Washington University in St. Louis have created a real-time monitor that can detect any of the SARS-CoV-2 virus variants in a room in about five minutes.

Getting NASA Data to the Ground with Lasers

The Laser Communications Relay Demonstration (LCRD) will usher in a new era of laser communications.

Fully Stretchable Fabric-Based Lithium-Ion Battery

The future of wearable technology just got a big boost thanks to a team of University of Houston researchers who designed, developed, and delivered a successful prototype of a fully stretchable fabric-based lithium-ion (Li-ion) battery.

Novel Light-Field Sensor for 3D Scene Construction Has Unprecedented Angular Resolution

A research team has developed a 3D imaging sensor that has an extremely high angular resolution — it can distinguish points of an object separated by an angular distance, of as little as 0.0018°. The sensor operates on a unique angle-to-color conversion principle.