Research

A replacement for traditional motors could enhance next-gen robots

Researchers at Stanford University have invented a way to augment electric motors to make them much more efficient at performing dynamic movements through a new type of actuator, a device that uses energy to make things move. Their actuator, published March 20 in Science Robotics, uses springs and clutches to accomplish a variety of tasks with a fraction of the energy usage of a typical electric motor. 

A battery’s hopping ions remember where they’ve been

When seen on an atomic scale, the seemingly smooth flow of ions through a battery's electrolyte is an illusion: Individual ions hop erratically from one open space to another, nudged in the direction of an electrode by a steady voltage. Researchers gave the hopping ions a jolt of voltage and to their surprise, most of the ions briefly reversed direction and returned to their previous positions before resuming their usual more random travels.

Sitting idle boosts the performance of lithium metal batteries for next-generation EVs

Stanford researchers have discovered a low cost solution to improve lithium metal battery's cycle life by letting it rest for several hours in the discharged state. This straightforward approach, described in a study published Feb. 7 in the journal Nature, restored battery capacity and boosted overall performance.

Car Loans Are a Hidden Driver of the Ride-Sharing Economy

Greg Buchak's, recently published paper in the Journal of Finance, looks at who gains from driving for ride sharing companies. Buchak, associate professor at the Stanford Graduate School of Business, finds that access to car loans plays a crucial role in distributing benefits to low-income drivers and has been an essential ingredient in the growth of the gig economy.

Pages