This Sticker Looks Inside the Body
A new stick-on ultrasound patch can record the activity of hearts, lungs and other organs for 48 hours at a time
Electronics
Should Machines Replace Mathematicians?
A “replication crisis” in mathematics raises questions about the purpose of knowledge
Electronic Skin Lets Humans Feel What Robots Do—And Vice Versa
An integration of soft materials, sensors and flexible electronics is bringing robotic “skin” closer than ever to reality
New ‘Ionogels’ Are Tough, Stretchable and Easy to Make
They could find use as protective material, 3-D printer “ink” or longer-lasting batteries
New Charging Technique Puts Crumbling Batteries Back Together
The method could extend the lifetime of lithium-metal batteries by 30 percent, a new study suggests
Holographic Camera Instantly Peeks around Obstacles
New imaging tech could probe beyond corners, inside the body, and more
New Sensor Tells You How Well Your Mask Is Working
FaceBit tracks a face covering’s fit and wear time, as well as its wearer’s vital signs
Gel-Based Sensor Continuously Monitors Wounds for Infection
The device can sit beneath a bandage and send infection alerts directly to a smartphone
The Right to Repair Should be Protected by Law
The U.S. Congress needs to uphold the freedom to repair electronic devices
Assessing COVID Risk and More with Air Quality Monitors
The consumer devices track pollutants as well as CO2—a proxy for potentially virus-laden human breath
All Small Electronics Should Have the Same Charging Port, New E.U. Rule Says
In a bid to reduce waste, a proposed regulation would require phones and other small electronics to switch to USB-C
This Room Could Wirelessly Charge All Your Devices
New technology delivers power to electronic devices in a test space