Related research topics in our group:
Flexible, Stretchable, Wearable, Healable Electronics
Nanostructures, 2D Materials
Sensor and Energy Applications
Our group focuses on electronic nanomaterials for both sensing and energy applications, with emphasis on flexible, stretchable and healable materials for wearable applications. We have activities in synthesis, characterization, and device fabrication.
Focusing primarily on electronic properties, we synthesize 2D/few-layered materials, porous materials, nanoparticles, nanocomposites, and nanostructured thin-films. Depending on the required structure, morphology, and properties, we have experimented with a wide range of materials including TMD, sulfides, graphene, multi-element oxides, and black phosphorus. Our synthesis techniques range from low-temperature solution processes (e.g. hydrothermal/solvothermal), chemical vapor deposition (CVD), to pulsed laser deposition (PLD), evaporation, and sputtering. Post-fabrication processing is also investigated such as surface modification, doping, ion implantation, and thermal annealing.
The Lab is well equipped with materials synthesis, characterization, device fabrication, and integration facilities. Specifically, we have capabilities in synthesis (e.g. CVD, PLD, sputtering, hydrothermal, soft chemistry routes), characterization (e.g. SEM, TEM, XRD, XPS, Raman, FTIR), device fabrication, (e.g. micro-plotter, programmable laser, electro-spinners), and various testing platforms (e.g. mechanical/tensile tester, semiconductor parameter analyzer, gas sensing with environmental control, electrochemical/impedance analyzer).
Nanomaterials are realized into various device structures to serve a variety of practical functions. Device structure is often a major consideration to the performance and durability. We explore several key device aspects including the engineering of interfaces, contact, and mechanical robustness for flexible electronics. This effort allows us to develop practical and commercializable devices, often in collaboration with industry.
Modulation of reaction mechanism via S:Mo: a rational strategy for large-area MoS2 growth
J. Xu and D Ho*
ACS Chemistry of Materials, accepted.
The Adatom Concentration Profile: A Paradigm for Understanding Two-Dimensional MoS2 Morphological Evolution in Chemical Vapor Deposition Growth
J. Xu, D. Srolovitz*, and D Ho*
ACS Nano, 15, 4, 2021.
W R Yan, J H Li, G P Zhang, L Wang*, and D Ho*
Journal of Materials Chemistry A (JMCA), 8, 2, 2020.
Q Tian, W Yan, Y Li, and D Ho*
ACS Applied Materials and Interfaces, 12, 2020.