Novel Nano Novel Nano-Engineered Semiconductors for ... - Caltech
Novel Nano Novel Nano-Engineered Semiconductors for ... - Caltech
Novel Nano Novel Nano-Engineered Semiconductors for ... - Caltech
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Strain-enhanced energy gap in silicon nano-pillarsSpatially resolved spectroscopy ofHF-etched silicon nano-pillarsSurface topography from STMafter HF chemical etching3 eV250 nmThe energy gap increases from ~ 1.11 eV<strong>for</strong> crystalline silicon to ~ 3.o eV <strong>for</strong> thestrained silicon nano-pillars.(Our preliminary STM results)Further quantum confinement isexpected <strong>for</strong> a finite magnetic fieldparallel to the silicon nano-pillars,because the diameter of the nanopillarsis typically smaller than thecyclotron orbit.