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Researchers slowly pull apart tiny bits of a titanium oxide mineral called rutile. The red dots near the top show the starting point. As the bottom half is pulled down, the top half stays attached by van der Waals forces -- until, that is, the pull becomes too great. The tips are about a thousand times skinnier than a human hair. The scientists used an atomic force microscope to do the pulling and viewed the event within an environmental transmission electron microscope under life-like conditions.
Credit: Xin Zhang, Yang He, Maria L. Sushko, Jia Liu, Langli Luo, James J. De Yoreo, Scott X. Mao, Chongmin Wang, and Kevin M. Rosso.
From the Toilet to the Tank – Biofuels from Sewage
What we flush can be converted into a biocrude oil with properties very similar to fossil fuels. Pacific Northwest National Laboratory researchers have worked out a process that does not require that sewage be dried before transforming it under heat and pressure to biocrude. Metro Vancouver ... more
Surprising semiconductor properties revealed with innovative new method
A research team probing the properties of a semiconductor combined with a novel thin oxide film have observed a surprising new source of conductivity from oxygen atoms trapped inside. Scott Chambers, a materials scientist at the Department of Energy’s Pacific Northwest National Laboratory, ... more
Making methane from CO2: Carbon capture grows more affordable
In their ongoing effort to make carbon capture more affordable, researchers at the Department of Energy’s Pacific Northwest National Laboratory have developed a method to convert captured carbon dioxide (CO2) into methane, the primary component of natural gas. By streamlining a longstandin ... more
It's elemental: Ultra-trace detector tests gold purity
Unless radon gas is discovered in a home inspection, most people remain blissfully unaware that rocks like granite, metal ores, and some soils contain naturally occurring sources of radiation. In most cases, low levels of radiation are not a health concern. But some scientists and engineers ... more
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