Connect with us

Entertainment

Substrate Effects on 2D Layers

Avatar

Published

on


Using ultraviolet light, the researchers probed the electronic characteristics of a 2D semiconductor (purple) as the number of substrate layers (green) increased. In data cards, red circles mark an electronic characteristic that has diminished as more substrate layers have been added. (Credit: Meng Kai Lin / University of Illinois at Urbana-Champaign)

Atomically thin films are of great technological interest because of the potentially useful electronic properties that appear when the thickness of the layer approaches the 2D limit. Such materials tend to form weak bonds on the outside of the layer and are therefore generally believed to be unaffected by substrates which provide a physical support.

However, to make further progress, scientists must rigorously test this hypothesis, not only to better understand monolayer physics, but also because the existence of substrate effects raises the possibility of adjusting the properties of the layer by modifying the substrate. .

As reported in the newspaper Physical examination letters, a team led by Tai-Chang Chiang of the University of Illinois at Urbana-Champaign and his postdoctoral associate, Meng-Kai Lin, used the Berkeley Lab’s Advanced light source (ALS) to probe changes in the electronic properties of a 2D semiconductor, titanium telluride, when the thickness of a substrate, platinum telluride, was increased. Single-layer titanium telluride is very sensitive to what lies below, making it particularly useful as a test case to study substrate coupling effects.

The results showed that as the thickness of the substrate increased, a dramatic and systematic variation occurred in the monolayer titanium telluride. An electronic phenomenon known as charge density wave, coupled charge and lattice distortion characteristic of single-layer titanium telluride have been removed.

The results, combined with theoretical first-principles simulations, led to a detailed explanation of the results in terms of basic quantum mechanical interactions between the single layer and the tunable substrate, Lin said.

Since the interfacial bond remained weak, the researchers concluded that the observed changes correlated with the transformation of substrates from a semiconductor to a semi-metal as it increased in thickness.

This systematic study illustrates the crucial role that substrate interactions play in the physics of ultra-thin films, Lin said. The scientific understanding resulting from our work also provides a framework for the design and engineering of ultra-thin films for useful and improved properties.

What Are The Main Benefits Of Comparing Car Insurance Quotes Online

LOS ANGELES, CA / ACCESSWIRE / June 24, 2020, / Compare-autoinsurance.Org has launched a new blog post that presents the main benefits of comparing multiple car insurance quotes. For more info and free online quotes, please visit https://compare-autoinsurance.Org/the-advantages-of-comparing-prices-with-car-insurance-quotes-online/ The modern society has numerous technological advantages. One important advantage is the speed at which information is sent and received. With the help of the internet, the shopping habits of many persons have drastically changed. The car insurance industry hasn't remained untouched by these changes. On the internet, drivers can compare insurance prices and find out which sellers have the best offers. View photos The advantages of comparing online car insurance quotes are the following: Online quotes can be obtained from anywhere and at any time. Unlike physical insurance agencies, websites don't have a specific schedule and they are available at any time. Drivers that have busy working schedules, can compare quotes from anywhere and at any time, even at midnight. Multiple choices. Almost all insurance providers, no matter if they are well-known brands or just local insurers, have an online presence. Online quotes will allow policyholders the chance to discover multiple insurance companies and check their prices. Drivers are no longer required to get quotes from just a few known insurance companies. Also, local and regional insurers can provide lower insurance rates for the same services. Accurate insurance estimates. Online quotes can only be accurate if the customers provide accurate and real info about their car models and driving history. Lying about past driving incidents can make the price estimates to be lower, but when dealing with an insurance company lying to them is useless. Usually, insurance companies will do research about a potential customer before granting him coverage. Online quotes can be sorted easily. Although drivers are recommended to not choose a policy just based on its price, drivers can easily sort quotes by insurance price. Using brokerage websites will allow drivers to get quotes from multiple insurers, thus making the comparison faster and easier. For additional info, money-saving tips, and free car insurance quotes, visit https://compare-autoinsurance.Org/ Compare-autoinsurance.Org is an online provider of life, home, health, and auto insurance quotes. This website is unique because it does not simply stick to one kind of insurance provider, but brings the clients the best deals from many different online insurance carriers. In this way, clients have access to offers from multiple carriers all in one place: this website. On this site, customers have access to quotes for insurance plans from various agencies, such as local or nationwide agencies, brand names insurance companies, etc. "Online quotes can easily help drivers obtain better car insurance deals. All they have to do is to complete an online form with accurate and real info, then compare prices", said Russell Rabichev, Marketing Director of Internet Marketing Company. CONTACT: Company Name: Internet Marketing CompanyPerson for contact Name: Gurgu CPhone Number: (818) 359-3898Email: [email protected]: https://compare-autoinsurance.Org/ SOURCE: Compare-autoinsurance.Org View source version on accesswire.Com:https://www.Accesswire.Com/595055/What-Are-The-Main-Benefits-Of-Comparing-Car-Insurance-Quotes-Online View photos



picture credit

ExBUlletin

to request, modification Contact us at Here or [email protected]