Power/Performance Bits: May 9


Integrated battery and solar cell Researchers from the Ulsan National Institute of Science and Technology (UNIST) in Korea developed a single-unit, photo-rechargeable portable power source based on miniaturized crystalline Si photovoltaics (c-Si PVs) and printed solid-state lithium-ion batteries (LIBs). The device uses a thin-film printing technique, in which the solid-state LIB is directly ... » read more

Manufacturing Bits: Jan. 31


Fiber-imprint patterning The École polytechnique fédérale de Lausanne (EPFL)--a research institute/university in Lausanne, Switzerland--has put a new twist in nano-imprint patterning technology. It has devised a way to imprint tiny or nano-metric patterns on hollow polymer fiber. Using a technique called thermal drawing, tiny patterns can be printed on both the inside and the outside of ... » read more

Manufacturing Bits: Feb. 4


Secrets of mass variation The General Conference on Weights and Measures will soon approve a plan to redefine the kilogram and other measurement units. The new definition for the kilogram will be based on the fixed numerical values of Planck’s constant (h). Supposedly, the new definition will solve the current problem. The kilogram is the only SI unit that is still described as an artif... » read more