Optically Controlled Silicon MESFET Fabrication and Characterizations for Optical Modulator/Demodulator

Silicon Carbide Power MESFET

Fabrication and optical characterizations of smooth silver-silica nanocomposite films

We have studied the surface-smoothing effect of an ultrathin germanium (Ge) layer on silver (Ag)-silica (SiO2) nanocomposite films for superlensing applications. Our experimental results indicate that inserting a thin Ge layer below the silver-silica composite films can reduce the final surface root-mean-squared (RMS) roughness to under 1 nm. Additionally, the metal nanostructure plays a role i...

Long optically controlled delays in optical fibers.

Optically controlled delay lines in optical fibers are demonstrated by use of the group-velocity control of signal pulses based on stimulated Brillouin scattering. We achieve continuous time delay within the range of 150 ns, much larger than the width of the 40 ns signal pulse, using cascaded fiber segments joined by unidirectional optical attenuators. In the meantime, we also observe a large a...

2 . Fabrication of Mesfet for High - Current Operation

In the 21st century, environmental measures such as reducing CO2 emissions have been demanded in energy development. Si switching devices are generally used as electric power converting devices. To reduce power loss, the density of Si device integration has become satisfactorily high. As a result, the on-state resistance of a Si metal oxide semiconductor field effect transistor (MOSFET) reached...

Silicon Nanowires with Mesopores: Fabrication and Optical Properties

Silicon nanowires (SiNWs) are electrochemically porosified to generate mesopores in sizes of 2-50 nm, resulting in the creation of mesoporous silicon nanowires (mpSiNWs). The porosification imposes two characteristics on to SiNWs: an increase of surface areas in the porous profile and quantum confinement ascribed to the shrinkage of silicon skeletons. Since the first report on producing mpSiNWs...