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The threshold voltage, Vth of a double-gate Schottky-Barrier (DGSB) source/drain (S/D) metal-oxide-semiconductor field-effect transistor (MOSFET) has been investigated. An analytic expression for surface potential in the channel is obtained and the results are verified via simulations, good agreement is observed. A new definition for Vth is given, and an analytic expression for Vth is presented. We...
A model for the Symmetric Double-Gate (SDG) n-MOSFET is presented. Poisson equation is solved analytically and channel potential is obtained. The analytical expression for subthreshold swing is achieved. Model results are compared with Medici simulations, good agreement is observed. The subthreshold swing of an SDG MOSFET will be improved by increasing the channel length, by reducing either the silicon...
As metal - oxide - semiconductor field-effect transistors (MOSFETs) down scaling progresses into the nanometer regime, quantum mechanical effects are becoming more and more significant. In this work, a model for the surrounding-gate (SG) nMOSFET is developed. The Schro??dinger equation is solved analytically and some of the results are verified via simulations. We find that the percentage of the electrons...
In this work, we demonstrate a novel SU8/SiO2 /PMMA trilayer nanoimprint technique to fabricate the silicon nanowire (SiNW) sensor used for gas detection. The SiNW sensor fabricated in our experiment is based on the silicon on insulator (SOI) substrate which is doped by boron with a dopant concentration of 8 times 1017 cm-3. Two nanowire sensors with different linewidths as well as a thin-film plane...
A novel electrowetting on dielectric (EWOD) digital microfluidic device using the high dielectric constant material P(VDF-TrFE) (poly-vinylidene fluoride-trifluoroethylene) as the dielectric layer fabricated by spin-coating process is proposed. The device is featured with the advantages of both IC compatible process and low driving voltage. The contact angle between the liquid droplet and surface...
We report the design and fabrication of two kinds of distributed Bragg reflectors (DBRs). One is a Bragg filter which introduces a periodic height modulation in part of a waveguide, and the other is a horizontal DBR with a deeply patterned grating structure in a waveguide at a freespace wavelength of 1.55 um (the propagation loss of quartz fiber used in optical communication is lowest around 1.55...
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