By creating a new type of molecular circuit switch, the team may have just opened the door to ultra-high-density computing within our lifetime.
An international team with ties to UCF has cracked a challenge that could herald a new era of ultra-high-density computing.
For years engineers and scientists around the world have been trying to make smaller and faster electronics. But the power needed for today’s design tends to overheat and fry the circuits. Circuits are generally built by connecting a diode switch in series with a memory element, called one diode–one resistor. But this approach requires large voltage drops across the device, which translates into high power, and hampers shrinking circuitry beyond a certain point as two separate circuit elements are required. Many teams are working on combining the diode and resistor into a single device.
These one-on-one molecular switches are great options, but they too have been limited to carrying out only one function and even then, they were often fraught with problems including unstable electrical voltage variances and limited lifespans.
The international team, led by Christian Nijhuis from the National University of Singapore and with co-authors Damien Thompson at the University of Limerick and Enrique del Barco the University of Central Florida, made the breakthrough detailed June 1 in the peer-reviewed journal Nature Materials.
The team created a new type of molecular switch that works as both a diode and a memory element. The device is 2 nanometers thick, the length of a single molecule (10,000 times smaller than the width of hair), and only requires a low drive voltage of less than 1 Volt.
“The community is quickly advancing in identifying novel electronic device applications at the molecular scale,” says Del Barco, a professor who specializes in quantum physics. “This work may help speed-up development of new technologies involving artificial synapses and neural networks.”
Nijhuis, who specializes in chemistry, led the team. Damien Thompson from the University of Limerick provided computational theory expertise and del Barco and his team of students and lab scientists provided the theoretical analysis.
How it works
The molecular switch operates in a two-step mechanism where the injected charge is stabilized by migration of charged ions between the molecules and the device surface. That’s made possible by bonding the molecules in pairs. Using a combination of electrical measurements and atomic-scale measurements guided by quantum mechanics, the team found a sweet spot between stability and switch ability that yielded the dual diode+memory resistive RAM memory at a microscopic scale, according to the paper.
“There are still some challenges and more work in this area is needed, but this is a significant breakthrough,” Nijhuis says.
The Latest Updates from Bing News & Google News
Go deeper with Bing News on:
- World's smallest atom-memory unit createdon November 23, 2020 at 2:08 pm
June 2, 2020 — An international team has cracked a challenge that could herald a new era of ultra-high-density computing. For years engineers and scientists around the world have been trying to ...
- Does HW Vs. SW Choice Affect Quality And Reliability?on November 22, 2020 at 2:20 am
The use of ultra-high density resistor/transistor arrays and full-wafer, high-speed parallel parametric testing significantly increases the signal sensitivity of the scribeline measurement, and ...
- Three RSC Supercomputers Represent Russia in Global IO500 Ratingon November 19, 2020 at 9:22 am
About RSC Group RSC Group is a leading Russian developer and integrator of full cycle innovative, ultra high-density, scalable, energy-efficient and hyper-converged solutions for high-performance ...
- Cooling Edge Data Centers: It Requires More Thoughton November 18, 2020 at 5:38 am
The team at TAS Energy highlights a variety of different approaches to cooling for edge data centers, from direct expansion cooling systems, to chilled water solutions, free cooling and more.
- Microsoft opens up new alliance to spur on data storage on DNAon November 16, 2020 at 3:23 am
Dr. Emily M. Leproust, CEO and co-founder of Twist Bioscience believes that, “DNA is an incredible molecule that, by its very nature, provides ultra-high-density storage for thousands of years.” ...
Go deeper with Google Headlines on:
Go deeper with Bing News on:
- Randomised Long-Term Comparison of Tinzaparin and Dalteparin in Haemodialysison November 22, 2020 at 4:00 pm
Objective and Design: Tinzaparin and dalteparin are low molecular weight heparins (LMWHs ... requiring a change of the extracorporeal circuit) and bubble catcher (from 1 = no clots to 4 = severe ...
- One Man’s Search for the DNA Data That Could Save His Lifeon November 19, 2020 at 4:05 am
The genetic correlations that could help Bryce Olson find a drug that works against his cancer are a scattered mess. Why don’t we have a better system for analyzing this kind of information?
- Illumina Wants Calif. Court To Double $27M IP Win Over Rocheon November 16, 2020 at 5:34 pm
Illumina Inc. has urged a California federal court to top off its $26.7 million patent infringement win against Roche Molecular Systems Inc. over prenatal testing technology with another $27 million ...
- Charges cascading along a molecular chainon November 12, 2020 at 9:50 am
That behavior mimics an electronic shift register in a digital circuit and provides new possibilities for transmitting information from one region of a molecular device to another. Moving a ...
- Charges Cascading Along a Molecular Chainon November 12, 2020 at 7:01 am
That behavior mimics an electronic shift register in a digital circuit and provides new possibilities for transmitting information from one region of a molecular device to another. Moving a molecule ...