IEEE Nanotechnology Council
Advancing Nanotech for Humanity
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NANO BLOG

April 22, 2015 – Low Energy Loss Cold Electron Transport in Devices Operating at Room Temperature

Professor Koh and his team at University of Texas at Arlington reported in Nature Communication a means of enabling electrons to transport at room temperature like electrons do at very low temperatures with little energy loss by passing electrons through an energy filter made of a quantum well.  The team has received funding to apply the discovery to high-density transistors made in the form of nanopillars. Read the original reports: Nanotechnology aids in cooling electrons without external sources,  Energy-filtered cold electron transport at room temperature.ncomms5745-f1 - Koh et al. Nature Communications

ncomms5745-f1 - Koh et al. Nature Communications 5, article 4745, 2014

(a) Left: the double-barrier tunnel junction (DBTJ) structure.  (a) Right: DBTJ structure with a quantum well inserted between the source and tunnelling barrier 1. (b) Schematic of the DBTJ structure with the energy filter inserted. Top: cross-sectional view. The dotted arrows indicate electron tunnelling paths. Bottom: three-dimensional view of one device unit. The schematics are not to scale. Credit Koh et al., Nature Communication.  (Posted by Y. Tzeng)

December 16, 2014 – NIST Sensor Enables Self-calibrating AFM

Pressure of light from an optical fiber sets an AFM tip vibrating, of which the movement is measured by an interferometer through another optical fiber giving a value of the probe ‘s stiffness as a means of self-calibration.  (Posted by Ed Perkins, Y. Tzeng)

NIST AFM