Boundary Scattering in Ballistic Graphene

We report magnetotransport measurements in ballistic graphene/hexagonal boron nitride mesoscopic wires where the charge carrier mean free path is comparable to wire width $W$. Magnetoresistance curves show characteristic peak structures where the peak field scales with the ratio of cyclotron radius $R_\textrm{c}$ and wire width $W$ as $W/R_\textrm{c} = 0.9 \pm 0.1$, due to diffusive boundary scattering. The obtained proportionality constant between $R_\textrm{c}$ and $W$ differs from that of a classical semiconductor 2D electron system where $W/R_\textrm{c} = 0.55$.Comment: 14 pages, 4 figure

A memory-based programmable logic device using look-up table cascade with synchronous static random access memories

A large-scale memory-technology-based programmable logic device (PLD) using LUT (Look-Up Table) cascade is developed in 0.35um Standard CMOS logic process. Eight 64K-bit synchronous SRAMs are connected to form an LUT cascade with a few additional circuits. The features of the LUT cascade include: 1) flexible cascade connection structure, 2) multi-phase pseudo-asynchronous operations with synchronous SRAM cores, 3) LUT-bypass redundancy. This chip operates at 33MHz in 8-LUT cascades with 122mW. Benchmark results show that it achieves a comparable performance to FPGAs

Programmable logic device with an 8-stage cascade of 64K-bit asynchronous SRAMs

The first implementation of a new programmable logic device using LUT(Look-Up Table) cascade architecture is developed in 0.35um CMOS logic process. Eight 64Kb asynchronous SRAMs are simply connected to form an LUT cascade with a few additional circuits. Benchmark results show that it has a competitive performance to FPGAs.IEEE Symposium on Low-Power and High-Speed Chips (Cool Chips VIII), April 22-25, 2005, Yokohama, Japa

A memory-based programmable logic device using a look-up table cascade with synchronous SRAMs

2005 International Conference on Solid State Devices and Materials (SSDM 2005), September13-15, 2005, Kobe, Hyogo, Japa