Content for Columbia.Edu

2D Semiconductors Found to Be Close-To-Ideal Fractional Quantum Hall Platform

“Columbia researchers first to discover a quantum fluid—fractional quantum Hall states, one of the most delicate phases of matter—in a monolayer 2D semiconductor; finding could provide a unique test platform for future applications in quantum computing Columbia University …

“One-Way” Electronic Devices Enter the Mainstream

“Waves, whether they are light waves, sound waves, or any other kind, travel in the same manner in forward and reverse directions—this is known as the principle of reciprocity. If we could route waves in one direction only—breaking …

A Tactile Robot Finger With No Blind Spots

“Columbia Engineers first to demonstrate a robotic finger with a highly precise sense of touch over a complex, multicurved surface Researchers at Columbia Engineering announced today that they have introduced a new type of robotic finger with a sense of …

Breaking (and Restoring) Graphene’s Symmetry in a Twistable Electronics Device

“Columbia researchers invent a new way to tune the properties of 2D materials by adjusting the twist angle between them; technology enables the development of nanoelectromechanical sensors with applications in astronomy, medicine, search and rescue, and more. A recent study …

Porous Polymer Coatings Dynamically Control Light and Heat

“New inexpensive, scalable design takes advantage of the optical switchability of porous polymers; could be used for heating, cooling, and lighting buildings, as well as camouflage applications Buildings devote more than 30% of their energy use to heating, cooling, and …

Researchers Develop Materials That Can Revolutionize How Light is Harnessed for Solar Energy

“New Design Rule for Generating Excitons Will Help Advance Next-Generation Devices Researchers at Columbia University have developed a way to harness more power from singlet fission to increase the efficiency of solar cells, providing a tool to help push forward …

Vidgets: Modular Mechanical Widgets for Mobile Devices

“We present Vidgets, a family of mechanical widgets, specifically push buttons and rotary knobs that augment mobile devices with tangible user interfaces. When these widgets are attached to a mobile device and a user interacts with them, the widgets’ nonlinear …

Ultra-Clean Fabrication Platform Produces Nearly Ideal 2D Transistors

“Columbia engineers develop a clean, damage-free fabrication process that creates pristine transistors made from 2D material stacks. Semiconductors, which are the basic building blocks of transistors, microprocessors, lasers, and LEDs, have driven advances in computing, memory, communications, and lighting technologies …

Fast, Flexible Ionic Transistors for Bioelectronic Devices

“Many major advances in medicine, especially in neurology, have been sparked by recent advances in electronic systems that can acquire, process, and interact with biological substrates. These bioelectronic systems, which are increasingly used to understand dynamic living organisms and to …

Columbia Engineers Build Smallest Integrated Kerr Frequency Comb Generator

“Low-power chip unites lasers and frequency combs for the first time and can be powered by an AAA battery, opening the door to portable devices for a wide range of applications from spectroscopy to optical communications to LIDAR. Optical frequency …