The new technology has applications in nanometer-scale transistors and circuits
Engineers at the University of California, Riverside, have demonstrated prototype devices made of an exotic material that can conduct a current density 50 times greater than conventional copper interconnect technology.
Current density is the amount of electrical current per cross-sectional area at a given point. As transistors in integrated circuits become smaller and smaller, they need higher and higher current densities to perform at the desired level. Most conventional electrical conductors, such as copper, tend to break due to overheating or other factors at high current densities, presenting a barrier to creating increasingly small components.
The electronics industry needs alternatives to silicon and copper that can sustain extremely high current densities at sizes of just a few nanometers.
The advent of graphene resulted in a massive, worldwide effort directed at investigation of other two-dimensional, or 2D, layered materials that would meet the need for nanoscale electronic components that can sustain a high current density. While 2D materials consist of a single layer of atoms, 1D materials consist of individual chains of atoms weakly bound to one another, but their potential for electronics has not been as widely studied.
One can think of 2D materials as thin slices of bread while 1D materials are like spaghetti. Compared to 1D materials, 2D materials seem huge.
A group of researchers led by Alexander A. Balandin, a distinguished professor of electrical and computer engineering in the Marlan and Rosemary Bourns College of Engineering at UC Riverside, discovered that zirconium tritelluride, or ZrTe3, nanoribbons have an exceptionally high current density that far exceeds that of any conventional metals like copper.
The new strategy undertaken by the UC Riverside team pushes research from two-dimensional to one-dimensional materials— an important advance for the future generation of electronics.
“Conventional metals are polycrystalline. They have grain boundaries and surface roughness, which scatter electrons,” Balandin said. “Quasi-one-dimensional materials such as ZrTe3 consist of single-crystal atomic chains in one direction. They do not have grain boundaries and often have atomically smooth surfaces after exfoliation. We attributed the exceptionally high current density in ZrTe3 to the single-crystal nature of quasi-1D materials.”
In principle, such quasi-1D materials could be grown directly into nanowires with a cross-section that corresponds to an individual atomic thread, or chain. In the present study the level of the current sustained by the ZrTe3 quantum wires was higher than reported for any metals or other 1D materials. It almost reaches the current density in carbon nanotubes and graphene.
Electronic devices depend on special wiring to carry information between different parts of a circuit or system. As developers miniaturize devices, their internal parts also must become smaller, and the interconnects that carry information between parts must become smallest of all. Depending on how they are configured, the ZrTe3 nanoribbons could be made into either nanometer-scale local interconnects or device channels for components of the tiniest devices.
The UC Riverside group’s experiments were conducted with nanoribbons that had been sliced from a pre-made sheet of material. Industrial applications need to grow nanoribbon directly on the wafer. This manufacturing process is already under development, and Balandin believes 1D nanomaterials hold possibilities for applications in future electronics.
“The most exciting thing about the quasi-1D materials is that they can be truly synthesized into the channels or interconnects with the ultimately small cross-section of one atomic thread— approximately one nanometer by one nanometer,” Balandin said.
The Latest on: 1D nanomaterials
via Google News
The Latest on: 1D nanomaterials
- NanoViricides Reports Its Novel Monkeypox Antiviral Could Reach Clinical Status Rapidlyon September 19, 2022 at 7:14 am
Shelton, Connecticut --News Direct-- NanoViricides, Inc. Learn More about NanoViricides, Inc. by gaining access to the latest research report As cases of the monkeypox virus continue to grow, the ...
- Nanomaterials Market Size Worth $62.8 Billion by 2031 | CAGR: 14.6%: AMRon September 19, 2022 at 4:42 am
Portland, OR, Sept. 19, 2022 (GLOBE NEWSWIRE) -- According to the report published by Allied Market Research, the global nanomaterials market was estimated at $16.3 billion in 2021 and is expected ...
- ARPA-H: High-risk, high-reward health research is the mandate of new, billion-dollar US agencyon September 16, 2022 at 5:40 am
The program launched in 2008, and our team of chemists, nanomaterials experts, bioengineers, mathematical modelers and surgeons was one of the funded teams in this program.
- Ideal Method to Fabricate 1D Nanomaterials For Bioengineeringon September 9, 2022 at 11:40 am
Study: A Nanobrush-Shearing Strategy Enabling the Alignment of 1D Nanomaterials for Synchronous Electrochromic Actuators and Controlled Growth of Neural Stem Cells. Iamge Credit: Giovanni ...
- Nanotechnology for Regenerative Medicine: Nanomaterials for Stem Cell Imagingon August 18, 2022 at 5:00 pm
 To apply nanotechnology to stem cell biology, several conditions must be considered: nanomaterials must be designed to interact with proteins and cells without perturbing their biological ...
- Irma Kuljanishvili, Ph.D.on July 1, 2022 at 6:39 am
Quantum confinement and disorder in 2D systems, 1D wires and quantum dots (QD) devices. Electronic and thermal transport in nanostructures, studies of defects and disorder in nanomaterials and devices ...
- Nanoscale Advances editorial board memberson March 2, 2022 at 10:10 pm
She is leading expert on Raman spectroscopy, used to characterise a wide range of carbon-based nanomaterials. She is recipient of the Leverhulme Award in Engineering (2016), the Marlow Award (2014), ...
- Jeongwon Parkon December 2, 2021 at 3:20 pm
His expertise is in the areas of IoT sensors and sensor networks for advanced manufacturing, nanotechnology-enabled flexible hybrid electronics, nanoelectronics, semiconductor, and nanomaterials ...
- Spring 2021 Distinguished Lecturer - Dr. Yoke Khin Yapon September 21, 2021 at 7:52 pm
What has changed the most in your field over the past decade (or two)? There has been a lot of development in carbon nanomaterials, started from the one-dimensional (1D) carbon nanotubes (CNTs) and ...
via Bing News