PRESSURE SENSORS: BULK SEMICONDUCTORS, NEEDLE-LIKE CRYSTALS, NANOTUBES
نویسندگان
چکیده
منابع مشابه
Microwave Oscillations in Bulk Semiconductors
{ I. Materials Studies 1 TI. Device Studies 3 III. Measurement of Drift Velocity in GaAs 5
متن کاملSpatial homogeneity of optically switched semiconductor photonic crystals and of bulk semiconductors
This paper discusses free carrier generation by pulsed laser fields as a mechanism to switch the optical properties of semiconductor photonic crystals and bulk semiconductors on an ultrafast time scale. Requirements are set for the switching magnitude, the time-scale, the induced absorption as well as the spatial homogeneity, in particular for silicon at λ = 1550 nm. Using a nonlinear absorptio...
متن کاملNanotubes are High Mobility Semiconductors
The electron transport properties of a very long (20 micron) CVD-grown nanotube are reported. In this device the transport is dominated by intrinsic scattering processes at room temperature. The room temperature hole mobility is 20,000 cm/Vs, exceeding that of technologically-relevant semiconductors. The mobility increases with decreasing temperature, and is estimated to be greater than 180,000...
متن کاملNarrow Carbon Nanotubes: Metals or Semiconductors?
We report local density functional results that show that narrow nanotubes with optimized diameters between about 0.34 and 0.5 nm can be either semiconducting or metallic, but with electron structures near the Fermi level that often cannot be understood starting from the graphene sheet model, successful in the study of larger diameter tubes. Our total energy calculations indicate that narrow na...
متن کاملAggregation of needle snow crystals
For the purpose of studying the early process of snowflake growth, characteristics of the Ž . aggregation collision–adhesion process of needle snow crystals were investigated by examining photomicrographs of snowflakes composed of two crystals. The adhesion type of the snowflakes was classified into crossed adhesion and point adhesion types. When the sizes of the two crystals were similar, whic...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Sensor Electronics and Microsystem Technologies
سال: 2013
ISSN: 2415-3508,1815-7459
DOI: 10.18524/1815-7459.2013.2.109551