Novel Nano Novel Nano-Engineered Semiconductors for ... - Caltech

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2. Semiconducting <strong>Nano</strong>wires (NWs)21 2.1. Why semiconducting NWs?• Semiconducting nanowires (NWs) have been demonstrated to be highly versatileoptoelectronic components <strong>for</strong> a wide variety of applications, including:* polarization-sensitive photodetectors & arrays with sub-wavelength resolution;* polarization-sensitive nano-APD (with gains up to 10 5 );* optical modulators & nano-waveguides;* nano-LEDs and nano-lasers ;* solar cells, biomedical sensors, etc.Bulk Ge10 nm25 nm110 nmGermaniumnanowireL. Y. Cao et al. (2009)
Polarization-sensitive & spatially resolved nano-APDsp-type Si-NW&n-type CdS-NWp-Sin-CdS10 mGain up to 10 5V b = 10V = 488 nm No crosstalkSpatial resolutionbetter than 250nmPolarization-sensitiveHayden et al.Nature Mat.5, 352 (2006)
Page 1 and 2: Novel Nano-Engineered Semiconductor
Page 3 and 4: 1. Nanotechnology & nanomaterials--
Page 5: 1. Nanotechnology & nanomaterials2.
Page 9 and 10: • Formation of NWs by selective e
Page 11 and 12: Atomically resolved imaging & spect
Page 13 and 14: Making a transistor out of a strain
Page 15 and 16: 1. Nanotechnology & nanomaterials2.
Page 17 and 18: 3.2. Physics of grapheneElectronic
Page 20: Challenges & Current Research DIrec
Page 23 and 24: STM calibration on graphite• We t
Page 25 and 26: STM studies of graphene on SiO 2•
Page 27 and 28: Strain-induced induced modification
Page 29 and 30: Strain-induced induced structural &
Page 31 and 32: 3.4. Potential applications to ligh

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