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Automated Particle-Resolved Colloidal Characterization  

Metallic glass nanostructures provide a new platform for electrocatalytic applications. Several surface modification strategies that remove or add metal species (images, right) improve the catalytic activity of metallic glass nanostructures.   These strategies were demonstrated for three key electrocatalytic reactions important for renewable energy.     

  By fabricating graphene structures atop nanometer-scale “steps” etched into silicon carbide, researchers have for the first time created a substantial electronic bandgap in the material suitable for room-temperature electronics. Use of nanoscale topography to control the properties of graphene could facilitate fabrication of transistors and other devices, potentially opening the door for developing all-carbon integrated circuits.

Semiconductor nanocrystals hold great potential for the low-cost manufacture of electronic devices. 

Doping semiconductor nanocrystals with transition metals is an efficient route to tune emission color over a broad range of wavelengths. We have developed a simple and environmentally friendly process for protein-aided mineralization of transition metal doped ZnS nanocrystals. Biofabricated ZnS:Mn quantum dots (QDs)

Heteroanionic doping of metal oxide semiconductors enables unique optoelectronic properties as a result of the tunable bonding and variable charge transport properties imparted by diverse anion chemistry. Here the effects of fluoride (Fˉ) doping in an archetypical metal oxide semiconductor, indium oxide (In-O), is studied.

The CDCM Stuff program engages diverse young learners and public audiences in the beauty, excitement, and impact of materials science and materials-based technologies. CDCM has facilitated 39 events during this reporting period, impacting more than 2,300 community participants.

Researchers combined experiments and computer simulations to uncover why contractile asters, made of biopolymers, slow down in coalescence and can have liquid or solid traits. They identified the reasons for asters becoming solid and created new ways to form liquid-like asters. Additionally, other studies looked at how actin filaments affect the movements of these asters. This work helps fill in knowledge gaps about the behavior of these structures in living systems.

Understanding the ultrafast dynamics of charge/spin transitions in magnetic insulators (MI) is crucial for developing new materials interfaces for spin-electronics and quantum information science applications. Supported by CEM, the groups of Yang and Baker reported a femtosecond extreme UV (XUV) spectroscopy of yttrium iron garnet (Y3Fe5O12, YIG), one of the important MI garnets for the NM/MI interfaces in this IRG.