—Graphene transistor detects SARS-CoV-2 in less than a minute “Device uses DNA probes to identify COVID-19 virus RNA with speed and high sensitivity” A small transistor that can accurately detect tiny traces of RNA from SARS-CoV-2 could herald a new breed of rapid screening tests for COVID-19 (J. Am.
by Mark Peplow, special to C&EN | November 07, 2021
—EU Firms Develop Printed Transistors “” Germany’s Merck KGaA is leading a consortium of 11 European companies and four research institutes to develop processes for the high-resolution printing of organic transistors. The project is funded in part by the European Union’s Horizon 2020 initiative. The partners include French chemical maker Arkema and Finnish technology institute VTT.
by Alex Scott | June 01, 2015
In the past two decades, carbon nanotube electronics have progressed from a single transistor to a simple 178-transistor computer reported by a Stanford University team in 2013; Shulaker, then a graduate student, was on that team. Yet a microprocessor that can execute the complex computations necessary to run modern programs requires tens of thousands of transistors in two flavors: n-type and p-type, which conduct electrons and positively charged species called holes, respectively.
by Prachi Patel | September 05, 2019
—Nanotubes Improve OLED Performance “Low-voltage transistors incorporating carbon nanotubes could make large OLED display screens a practical possibility” An organic light-emitting diode (OLED) with a low-voltage transistor incorporating carbon nanotubes in place of the traditional power-hungry silicon-based transistor could make large OLED display screens a practical possibility, according to a report (Science, DOI: 10.1126/science.1203052). Although OLEDs offer color quality and contrast advantages over liquid crystal displays, transistor power-consumption limits OLED usefulness for applications such as TVs and computers. Currently, OLEDs can be found in small handheld devices such as cell phones. Andrew G. Rinzler and Mitchell A. McCarthy of the University of Florida and colleagues had previously shown that thin-film transistors consisting of a network of single-walled carbon nanotubes require relatively little power to drive the electronic action of OLEDs.
by Elizabeth K. Wilson | April 28, 2011
—Intel, IBM Unveil New Transistors “Hafnium-based materials will be incorporated in 45-nm-technology chips” IN DUELING ANNOUNCEMENTS that mark the culmination of years of research efforts, Intel and IBM say they are using hafnium-based dielectric insulating materials to construct the transistors in their next-generation 45-nm-technology chips.
by Alexander H. Tullo | February 05, 2007
—Intel, IBM Unveil New Transistors “Breakthrough: Hafnium-based materials will be incorporated in 45-nm-technology chips” IN DUELING ANNOUNCEMENTS that mark the culmination of years of research efforts, Intel and IBM say they are using hafnium-based dielectric insulating materials to construct the transistors in their next-generation 45-nm-technology chips.
by Alexander H. Tullo | February 05, 2007
Insets show nanowire thin-film transistors on plastic (bottom) and a close-up image of one of the transistors (top). Photos courtesy of Nanosys Nanosys researcher Xiangfeng Duan and coworkers have used thin films of oriented silicon nanowires or cadmium sulfide nanoribbons as the semiconducting channels in high-performance thin-film transistors they have fabricated [Nature, 425, 274 (2003)].
by MICHAEL FREEMANTLE | September 22, 2003
—Breakthrough performance for 2-D material “Working transistor shows MoS2 can live up to its theoretical promise” A new design has enabled researchers to make the best-performing transistor yet from two-dimensional molybdenum disulfide. They say the results show the material has the right stuff to compete with silicon in the future—though many technological challenges still stand in its way (Nano Lett. 2016, DOI: 10.1021/acs.nanolett.6b02713).
by Katherine Bourzac, special to C&EN | September 28, 2016