10 Oct 2022
Chemists Make Strides Toward a Marijuana Breath Analyzer
Chemists are now a step closer to their goal of developing a handheld tool similar to an alcohol Breathalyzer that can detect THC on a person's breath after they've smoked marijuana.
25 Aug 2022
Sensor Could Help Patients Stay on Top of Their Meds
Lithium can alleviate the symptoms of bipolar disorder and depression — if taken in just the right amount. Too little won't work, while too much can bring on dangerous side effects. To precisely monitor the amount of this medication in the body, patients must undergo invasive blood tests. But now, scientists report the invention of a tiny sensor that detects lithium levels from sweat on the surface of a fingertip in as little as 30 seconds, without a trip to the clinic.
12 Aug 2022
Human-Machine Interfaces Work Underwater, Generate Their Own Power
Wearable human-machine interface devices can be used to control machines, computers, music players, and other systems. A challenge for conventional human-machine interfaces is the presence of sweat on human skin. Scientists now describe their development of a type of human-machine interface that is stretchable, inexpensive, and waterproof. The device is based on a soft magnetoelastic sensor array that converts mechanical pressure from the press of a finger into an electrical signal.
13 Jul 2022
Durable Material for Flexible Artificial Muscles
Materials scientists and colleagues have developed a new material and manufacturing process for creating artificial muscles that are stronger and more flexible than their biological counterparts.
17 Jun 2022
Single-Step, All-In-One 3D Printing Method to Make Robotic Materials
A team of engineers and their colleagues have developed a new design strategy and 3D printing technique to build robots in one single step. The breakthrough enabled the entire mechanical and electronic systems needed to operate a robot to be manufactured all at once by a new type of 3D printing process for engineered active materials with multiple functions (also known as metamaterials). Once 3D printed, a "meta-bot" will be capable of propulsion, movement, sensing and decision-making.
25 Apr 2022
CarbonBuilt is a US-based company developing a modular solution to permanently embed carbon dioxide from flue gas into precast concrete blocks.
17 Mar 2022
Solutions to Biggest Hurdle for Solar Cell Technology
Materials scientists have discovered the major reason why perovskite solar cells — which show great promise for improved energy-conversion efficiency — degrade in sunlight, causing their performance to suffer over time. The team successfully demonstrated a simple manufacturing adjustment to fix the cause of the degradation, clearing the biggest hurdle toward the widespread adoption of the thin-film solar cell technology.
2 Mar 2022
Ultrathin Films for Stretchable and Sturdy Bioelectronic Membranes
Researchers have developed a unique design of ultrathin films for highly flexible yet mechanically robust bioelectronic membranes that could pave the way for diagnostic on-skin sensors that fit precisely over the body's contours and conform to its movements.
17 Feb 2022
Smartwatch Measures Key Stress Hormone
The human body responds to stress, from the everyday to the extreme, by producing a hormone called cortisol. To date, it has been impractical to measure cortisol as a way to potentially identify conditions such as depression and post-traumatic stress, in which levels of the hormone are elevated. Cortisol levels traditionally have been evaluated through blood samples by professional labs, and while those measurements can be useful for diagnosing certain diseases, they fail to capture changes in cortisol levels over time.
29 Nov 2021
Big Batteries on Wheels Can Deliver Zero-Emissions Rail, Secure Grid
Trains have been on the sidelines of electrification efforts for a long time in theUS because they account for only 2% of transportation sector emissions, but diesel freight trains emit 35 million metric tons of carbon dioxide annually and produce air pollution that leads to $6.5 billion in health costs, resulting in an estimated 1,000 premature deaths each year.
5 Oct 2021
New Class of Human-Powered Bioelectronics
A team of bioengineers has invented a novel soft and flexible self-powered bioelectronic device. The technology converts human body motions — from bending an elbow to subtle movements such as a pulse on one's wrist — into electricity that could be used to power wearable and implantable diagnostic sensors.
20 Sep 2021
Bacteria Infused with Silver to Improve Power Efficiency in Fuel Cells
Research has taken a major step forward in the development of microbial fuel cells — a technology that utilizes natural bacteria to extract electrons from organic matter in wastewater to generate electrical currents.
30 Aug 2021
Will it be Safe for Humans to Fly to Mars?
Sending human travelers to Mars would require scientists and engineers to overcome a range of technological and safety obstacles. One of them is the grave risk posed by particle radiation from the sun, distant stars and galaxies.
27 Aug 2021
Pollen Developed Into 3D Printing Ink for Biomedical Applications
Scientists have found a way to use sunflower pollen to develop a 3D printing ink material that could be used to fabricate parts useful for tissue engineering, toxicity testing and drug delivery.
25 Aug 2021
Tiny Robot Earns World Record
The creator hopes his robots can someday be used to solve tricky engineering problems by emulating talented creatures like squid or mice that can seamlessly squeeze themselves like liquid into tight places. Biology, particularly insects, still surpass their robotic counterparts in almost every aspect, but he hopes to develop robots in the next decade that are significantly better at mimicking natural systems.
4 May 2021
Multidisciplinary Team Developing an Immersive Avatar System
A multidisciplinary team developing an immersive avatar system that enables remote human connection has advanced to the semifinals for the $10 million ANA Avatar XPRIZE competition.
29 Mar 2021
Scientists Create Model of an Early Human Embryo from Skin Cells
In a discovery that will revolutionize research into the causes of early miscarriage, infertility and the study of early human development - an international team of scientists has generated a model of a human embryo from skin cells.