Researchers build a RISC-V processor using a 2D semiconductor

A 32-bit RISC-V processor made using molybdenum disulfide instead of silicon

A team of engineers at Fudan University has successfully designed, built and run a 32-bit RISC-V microprocessor that uses molybdenum disulfide instead of silicon as its semiconductor component. Their paper is published in the journal Nature.

Researchers build a RISC-V processor using a 2D semiconductor

It’s slow and inefficient, but the semiconductor is only one molecule thick.

A RISC-V 32-bit microprocessor based on two-dimensional semiconductors

Recently the quest for post-silicon semiconductors has escalated owing to the inherent limitations of conventional bulk semiconductors, which are plagued by issues such as drain-induced barrier lowering, interfacial-scattering-induced mobility degradation and a constrained current on/off ratio determined by semiconductor bandwidth. These challenges have prompted the search for more advanced materials, with atomic-layer-thick two-dimensional (2D)…

A team of engineers at Fudan University designed, built and managed a 32-bit RISC-V microprocessor that uses molybdenum disulfide instead of silicon as a semi-conducting component. Their article is published in the journal Nature. Most microprocessors are manufactured using semiconductor silicon, which has worked well for several decades. [...]

A buffer overflow detection and defense method based on RISC-V instruction set extension - Cybersecurity

Buffer overflow poses a serious threat to the memory security of modern operating systems. It overwrites the contents of other memory areas by breaking through the buffer capacity limit, destroys the system execution environment, and provides implementation space for various system attacks such as program control flow hijacking. That makes it a wide range of harms. A variety of security technologies have been proposed to deal with system securit…

A 32-bit processor made with an atomically thin semiconductor - WorldNL Magazine

Still, there were some distinct challenges involved with MoS2. In normal silicon, a transistor's threshold voltage can be adjusted by doping the silicon—implanting impurities that change the semiconductor's behavior. But there's no way to implant an impurity in a single molecule. All of the semiconductors of RV32-WUJI are n-type, and their performance can't be adjusted. So the researchers here used two different metals (aluminum and gold) for th…