Power/Performance Bits: Oct. 2


Photonic sensor Researchers at Washington University in St. Louis devised a way to record environmental data using a wireless photonic sensor resonator with a whispering-gallery-mode (WGM) architecture capable of resonating at light frequencies and also at vibrational or mechanical frequencies. Optical sensors are not affected by electromagnetic interference, a major benefit in noisy or har... » read more

Power/Performance Bits: July 25


Sodium-ion cathode Researchers at the University of Texas at Dallas and Seoul National University developed a manganese and sodium-ion-based cathode material they hope could lead to lower-cost rechargeable batteries. In a typical lithium-ion battery, the cathode is made of lithium, cobalt, nickel and oxygen. "Lithium is a more expensive, limited resource that must be mined from just a fe... » read more

Power/Performance Bits: Feb. 23


Apple core batteries Apple waste could help reduce the cost of energy storage, say researchers seeking an improved sodium-ion at the Helmholtz Institute Ulm of Karlsruhe Institute of Technology. Sodium-ion batteries are not only far more powerful than nickel-metal hydride or lead acid accumulators, but also represent an alternative to lithium-ion technology, as the initial materials neede... » read more