ATLANTA -- By fabricating graphene structures atop nanometer-scale “steps” etched into silicon carbide, researchers have for the first time created a substantial electronic bandgap in the material suitable for room-temperature electronics. Use of nanoscale topography to control the properties of graphene could facilitate fabrication of transistors and other devices, potentially opening the door for developing all-carbon integrated circuits.

HONG KONG -- VTech Holdings' EMS unit reported sales rose for its fiscal first-half ended Sept. 30, led in part by higher demand for contract assembly work.

MINNEAPOLIS -- Nortech Systems' third-quarter net income and sales slowed on mixed demand from certain end-markets.

TEL AVIV, ISRAEL -- Tessera Technologies will close its plant here and sell another in North Carolina due to falling profits at its digital optics business.