Chosen from a pool of 343 nominated promising scientific researchers aged 42 years and younger from America’s top academic and research institutions, Duan is one of ten Physical Sciences & Engineering finalists. The finalists were selected based on their extraordinary accomplishments and their promise for the future.
Titled “Van der Waals Integration Before and Beyond Two-dimensional Materials”, the article was published in the March 20, 2019 issue of the journal.
As a UCLA professor of chemistry and biochemistry, Prof. Duan is also an Associate Editor for the journalNano Research. In 2018, Duan was named one of the most influential scientific researchers by Clarivate Analytics.
A new mechanically strong, double-pane ceramic aerogel made from hexagonal boron nitride that is resistant to high temperatures could be used in aerospace and industrial applications. The material, which boasts both a negative Poisson’s ratio and a negative thermal expansion coefficient, is very different to typical ceramic aerogels that are brittle and structurally degrade under thermal shocks.
Researchers at the University of California, Los Angeles (UCLA), the University of Texas at Austin, and Hunan University (China) have recently devised a new method of preparing highly uniform, solution-processable, phase-pure semiconducting nanosheets. Their approach, outlined in a paper published in Nature, involves the electrochemical intercalation of quaternary ammonium molecules into 2-D crystals, followed by a mild sonication and exfoliation process.
UCLA scientists and engineers have developed a new process for assembling semiconductor devices. The advance could lead to much more energy-efficient transistors for electronics and computer chips, diodes for solar cells and light-emitting diodes, and other semiconductor-based devices.
A research team led by UCLA scientists and engineers has developed a method to make new kinds of artificial “superlattices” — materials comprised of alternating layers of ultra-thin “two-dimensional” sheets, which are only one or a few atoms thick. Unlike current state-of-the art superlattices, in which alternating layers have similar atomic structures, and thus similar electronic properties, these alternating layers can have radically different structures, properties and functions, something not previously available.
Researchers in the US and Saudi Arabia are the first to have observed negative transconductance (NTC) inside multilayer molybdenum-disulphide (MoS2) transistors with optimized graphene/metal hybrid contacts. The NTC behaviour comes about thanks to competition between inter-layer charge transport and charge transport through a vertical potential barrier in the MoS2. This unique effect could be exploited for making frequency doublers and phase-shift keying circuits with only one multilayer transistor – something that would greatly simplify circuit design compared to conventional technology, says the team.
Researchers have developed nanostructures made from a compound of three metals that increases the efficiency and durability of fuel cells while lowering the cost to produce them. Their solution addresses vexing problems that have stalled the adoption of this technology. [via phys.org]
In order to make current catalysts more efficient with less energy consumption and less pollution, the Huang group has demonstrated a new approach to producing nanocrystals with predictable shapes by utilizing surfactants, biomolecules that can bind selectively to certain facets of the crystals' exposed surfaces. [via newsroom.ucla]
Three young researchers in the UCLA Henry Samueli School of Engineering and Applied Science are opening up new avenues of inquiry and developing new tools for the precise control of nanoparticles, figuring out new ways to “debug” the brain circuit and building ultrasensitive biosensors for the early detection of disease. [via newsroom.ucla]
A new graphene nanostructure called graphene nanomesm (GNM) is able to open up a band gap in a large sheet of graphene to create a highly uniform, continuous semiconducting thin film that may be processed using standard planar semiconductor processing methods. [via newsroom.ucla]