T. C. Chong

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Phase-change random-access memory (PCRAM) is one of the leading candidates for next-generation data-storage devices, but the trade-off between crystallization (writing) speed and amorphous-phase stability (data retention) presents a key challenge. We control the crystallization kinetics of a phase-change material by applying a constant low voltage via(More)
A phase-change nanolithography technique is developed to fabricate up to millions of two-/ three-dimensional nanostructures ͑ϳ50 nm͒ over a large area at a high speed by combining femtosecond laser, microlens array, and wet etching process. Near-field scanning optical microscopy, electrical force microscopy, and atomic force microscopy were used to(More)
Laser-crystallized features were produced on as-deposited amorphous phase-change films by laser irradiation through a microlens array, which is a highly efficient patterning method since arbitrary features can be created uniformly over a large area in a short time. An Nd:YAG laser and a femtosecond laser were used as light sources. The dependence of feature(More)
In the modern multiuser computer environment, Internet-capable networks provide connectivity that allows a large portion of the user population to access information from sources around the world. Because of the ease with which information can be accessed, computer security breaches may occur unless systems are restricted and information stored therein are(More)
In this work, the thermal and electrical performances of chalcogenide-based phase change memory cell were investigated. We have investigated the current reduction issue for CRAM cell theoretically and experimentally. It was found that the value of programming current is highly dependent on the materials and device structure. The effects of materials and(More)
In this paper, we present a parallel transmission architecture for SAN. By using two schedulers on the destination and source addresses of packets, the load of multiple data flows between multiple devices can be balanced in an asymmetrical topology without using special hardware. The SAN performance could be scaled flexibly and additional fault tolerance(More)
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