PRESS-NEWS.org - Press Release Distribution
PRESS RELEASES DISTRIBUTION

New method to improve durability of nano-electronic components, further semiconductor manufacturing

2021-06-01
(Press-News.org) University of South Florida researchers recently developed a novel approach to mitigating electromigration in nanoscale electronic interconnects that are ubiquitous in state-of-the-art integrated circuits. This was achieved by coating copper metal interconnects with hexagonal boron nitride (hBN), an atomically-thin insulating two-dimensional (2D) material that shares a similar structure as the "wonder material" graphene.

Electromigration is the phenomenon in which an electrical current passing through a conductor causes the atomic-scale erosion of the material, eventually resulting in device failure. Conventional semiconductor technology addresses this challenge by using a barrier or liner material, but this takes up precious space on the wafer that could otherwise be used to pack in more transistors. USF mechanical engineering Assistant Professor Michael Cai Wang's approach accomplishes this same goal, but with the thinnest possible materials in the world, two-dimensional (2D) materials.

"This work introduces new opportunities for research into the interfacial interactions between metals and ångström-scale 2D materials. Improving electronic and semiconductor device performance is just one result of this research. The findings from this study opens up new possibilities that can help advance future manufacturing of semiconductors and integrated circuits," Wang said. "Our novel encapsulation strategy using single-layer hBN as the barrier material enables further scaling of device density and the progression of Moore's Law." For reference, a nanometer is 1/60,000 of the thickness of human hair, and an ångström is one-tenth of a nanometer. Manipulating 2D materials of such thinness requires extreme precision and meticulous handling.

In their recent study published in the journal Advanced Electronic Materials, copper interconnects passivated with a monolayer hBN via a back-end-of-line (BEOL) compatible approach exhibited more than 2500% longer device lifetime and more than 20% higher current density than otherwise identical control devices. This improvement, coupled with the ångström-thinness of hBN compared to conventional barrier/liner materials, allows for further densification of integrated circuits. These findings will help advance device efficiency and decrease energy consumption.

"With the growing demand for electric vehicles and autonomous driving, the demand for more efficient computing has grown exponentially. The promise of higher integrated circuits density and efficiency will enable development of better ASICs (application-specific integrated circuits) tailored to these emerging clean energy needs." explained Yunjo Jeong, an alumnus from Wang's group and first author of the study.

An average modern car has hundreds of microelectronic components, and the significance of these tiny but critical components has been especially highlighted through the recent global chip shortage. Making the design and manufacturing of these integrated circuits more efficient will be key to mitigating possible future disruptions to the supply chain. Wang and his students are now investigating ways to speed up their process to the fab scale.

"Our findings are not limited only to electrical interconnects in semiconductor research. The fact that we were able to achieve such a drastic interconnect device improvement implies that 2D materials can also be applied to a variety of other scenarios." Wang added.

INFORMATION:

This project was in collaboration with researchers from the National Institute for Materials Science (NIMS) of Japan and was supported in part by the University of South Florida (USF) New Researcher Grant (NRG), USF Nexus Initiative (UNI), the ORAU Ralph E. Powe Junior Faculty Enhancement Award, and the National Science Foundation under Grant No. 1944638. Support was also provided in part by the National GEM Consortium Fellowship, Alfred P. Sloan Minority Graduate Scholarship Program, and USF University Graduate Fellowship. Extensive experimental work was completed at the USF Nanotechnology Research and Education Center (NREC).



ELSE PRESS RELEASES FROM THIS DATE:

Forged books of seventeenth-century music discovered in Venetian library

Forged books of seventeenth-century music discovered in Venetian library
2021-06-01
UNIVERSITY PARK, Pa. -- In 1916 and 1917, a musician and book dealer named Giovanni Concina sold three ornately decorated seventeenth-century songbooks to a library in Venice, Italy. Now, more than 100 years later, a musicologist at Penn State has discovered that the manuscripts are fakes, meticulously crafted to appear old but actually fabricated just prior to their sale to the library. The manuscripts are rare among music forgeries in that the songs are authentic, but the books are counterfeit. Uncovering deception was not what Marica Tacconi, professor of musicology and associate ...

Time-dependent viral interference between influenza virus and coronavirus in the infection of differ

2021-06-01
A new study carried out in pig cells suggests previous infection with swine influenza virus (SIV) can protect against the development of porcine respiratory coronavirus (PRCoV) if there is a zero- or three-day interval between infections. The findings, published in the peer-reviewed journal Virulence, may also be relevant to influenza and coronavirus infection in humans. Ju-Yi Peng of the University of Veterinary Medicine Hannover and colleagues used air liquid interface cultures of cells taken from pigs' windpipes to investigate the interactions between the two viruses. They found that prior infection by swine influenza virus completely inhibited coronavirus infection when the cells were infected ...

Analysis reveals global 'hot spots' where new coronaviruses may emerge

2021-06-01
Berkeley -- Global land-use changes -- including forest fragmentation, agricultural expansion and concentrated livestock production -- are creating "hot spots" favorable for bats that carry coronaviruses and where conditions are ripe for the diseases to jump from bats to humans, finds an analysis published this week by researchers at the University of California, Berkeley, the Politecnico di Milano (Polytechnic University of Milan) and Massey University of New Zealand. While the exact origins of the SARS-CoV-2 virus remain unclear, scientists believe that the disease likely emerged when a virus that infects horseshoe bats was able to jump to humans, either ...

Diet plays critical role in NASH progressing to liver cancer in mouse model

Diet plays critical role in NASH progressing to liver cancer in mouse model
2021-06-01
Non-alcoholic fatty liver disease (NAFLD) is the most common cause of chronic liver disease worldwide. NAFLD patients are at higher risk of developing Non-alcoholic steatohepatitis (NASH), which causes severe and chronic liver inflammation, fibrosis and liver damage. A patient with NASH is believed to be at high risk for developing a form of liver cancer called hepatocellular carcinoma (HCC). Apart from lifestyle interventions, there are currently no approved treatments for NASH. A liver transplant is sometimes the only remedy. While risk factors for NASH (obesity, type-2 diabetes and gene mutations like PNPLA3) and HCC ...

Researchers discover gene linked to bone cancer in children, ID potential novel therapy

Researchers discover gene linked to bone cancer in children, ID potential novel therapy
2021-06-01
CHAPEL HILL, North Carolina--Researchers have discovered a gene, OTUD7A, that impacts the development of Ewing sarcoma, a bone cancer that occurs mainly in children. They have also identified a compound that shows potential to block OTUD7A protein activity. The finding, by scientists at the University of North Carolina and the Lineberger Comprehensive Cancer Center, appeared online June 1, 2021, in Advanced Science. About 250 children and young adults are diagnosed with Ewing sarcoma each year in the U.S. About half of those diagnosed will ultimately succumb to the disease, pointing to the need for better therapies. "Our primary research focus targeted the EWS-FLI1 fusion protein found in about 85 percent of Ewing sarcoma patients," said UNC Lineberger's ...

SWOG researchers advance cancer care at virtual ASCO 2021

2021-06-01
"SWOG always brings an impressive portfolio of work to the ASCO annual meeting," said SWOG Chair Charles D. Blanke, MD, "and this year I'm particularly excited about the research our investigators are presenting because it includes results that are likely to be practice-changing." Investigators will present 12 abstracts from SWOG-led or co-led studies and 11 abstracts from studies led by other groups within the National Clinical Trials Network (NCTN). Results from S1216 will be presented orally by study chair Neeraj Agarwal, MD, of the Huntsman Cancer Institute at the University of Utah. S1216 compared androgen deprivation therapy (ADT) combined with TAK-700 to the standard ...

UArizona engineers demonstrate a quantum advantage

UArizona engineers demonstrate a quantum advantage
2021-06-01
Quantum computing and quantum sensing have the potential to be vastly more powerful than their classical counterparts. Not only could a fully realized quantum computer take just seconds to solve equations that would take a classical computer thousands of years, but it could have incalculable impacts on areas ranging from biomedical imaging to autonomous driving. However, the technology isn't quite there yet. In fact, despite widespread theories about the far-reaching impact of quantum technologies, very few researchers have been able to demonstrate, using the technology available now, that quantum methods have an advantage over their classical counterparts. In a paper published on June 1 in the journal Physical Review X, University of Arizona researchers experimentally ...

UCI-led study sheds light on mysterious genotype-phenotype associations

UCI-led study sheds light on mysterious genotype-phenotype associations
2021-06-01
Irvine, CA - June 1, 2021 - A new study analyzing the association between an individual's genetics (genotype) and their observable characteristics resulting from the interaction of genetics and the environment (phenotype), contributes new knowledge to the understanding of human complex traits and diseases. The study titled, "An atlas of alternative polyadenylation quantitative trait loci (3?aQTLs) contributing to complex trait and disease heritability," was recently published in Nature Genetics. Led by University of California, Irvine professor of ...

International study of weight stigma reveals similar, pervasive experiences

2021-06-01
Over 50% of adults surveyed across six different countries report experiencing weight stigma, and those who engage in self-stigma and self-blame for their weight are more likely to avoid healthcare, obtain less frequent checkups, and perceive less respect from doctors, according to two new studies from the UConn Rudd Center for Food Policy and Obesity. These studies, which compared experiences of adults in Australia, Canada, France, Germany, the UK, and the US are the first multi-national studies to examine the link between weight stigma and negative ...

Global costs of Plasmodium vivax malaria estimated for the first time

2021-06-01
Plasmodium vivax malaria is a mosquito-borne illness that causes significant morbidity. However, the household and healthcare provider costs of the disease are unknown. A new study published in the open-access journal PLOS Medicine by Dr Angela Devine at Menzies School of Health Research in Australia, and colleagues estimate the global economic burden of P. vivax for the first time using country-level data. Researchers first estimated household and healthcare provider P. vivax costs, then collated and combined these data with national case estimates for 44 endemic countries in 2017. The resulting global cost estimate was US$359 million. The authors wanted to explore how these cost estimates might change with widespread access to radical cure. Radical ...

LAST 30 PRESS RELEASES:

Heart rate changes predict depression treatment success with magnetic brain stimulation

Genetics pioneer transforms global depression research through multi-omics discoveries

MDMA psychiatric applications synthesized: Comprehensive review examines PTSD treatment and emerging therapeutic indications

Psychedelics offer new therapeutic framework for stress-related psychiatric disorders

Brain cell discoveries reshape understanding of psychiatric disorders

Mom’s voice boosts language-center development in preemies’ brains, study finds

Development of silicon ultrasound patch achieves both eco-friendliness and performance enhancement

Measles immunity 90% in BC’s Lower Mainland

Women’s brain regions may lose ability to synchronize after sexual assault

Quitting smoking, even late in life, linked to slower cognitive decline

Critical raw materials are a vital new currency; Europe’s e-waste is the vault

Anesthesiologist-led care helps hip-fracture patients get to surgery faster, with fewer complications

Two-dose recombinant shingles vaccine is effective even accounting for prior receipt of live shingles vaccine

Excessive daytime sleepiness may raise risk of cognitive problems after surgery

Flipping the switch on sperm motility offers new hope for male infertility

Twisting sound: Scientists discover a new way to control mechanical vibrations in metamaterial

Drip by drip: The hidden blueprint for stalagmite growth

mRNA therapy restores sperm production and fertility in mice

New way to weaken cancer cells could supercharge prostate cancer treatment

How sound—but not touch—shapes rhythm in the brain

Exploring the therapeutic potential of hypothermia

Research alert: Bioengineering breathes new life into failed cancer treatment

AI, health, and health care today and tomorrow – the JAMA Summit Report on artificial intelligence

Large genetic study links cannabis use to psychiatric, cognitive and physical health

Social media use trajectories and cognitive performance in adolescents

Music for the brain: Study tests the effect of slow-tempo relaxing music to address delirium in critically ill older adults 

AI models predict sepsis in children, allow preemptive care

Liraglutide vs semaglutide vs dulaglutide in veterans with type 2 diabetes

Antenatal corticosteroids and infectious diseases throughout childhood

New lab-grown human embryo model produces blood cells

[Press-News.org] New method to improve durability of nano-electronic components, further semiconductor manufacturing