Nanotechnology for Energy, Environment, Electronics, Healthcare and Industry: Nanotechnology for Energy, Environment, Electronics, Healthcare and Industry - Session II
Sponsored by: ACerS Electronics Division, TMS Nanomechanical Materials Behavior Committee
Program Organizers: Gary Pickrell, Virginia Tech; Navin Manjooran, Solve

Wednesday 2:00 PM
November 4, 2020
Room: Virtual Meeting Room 26
Location: MS&T Virtual

Session Chair: Weining Wang, Virginia Commonwealth University; Gunes Yakaboylu, West Virginia University; Gary Pickrell, Virginia Tech; Navin Manjooran, Solve Technology And Research, Inc.


2:00 PM  Invited
Effect of CuO/MgO Ratio on the Gene Expression, Cytocompatibilty, and Antibacterial/Analgesic/ Anticancerous Drug Loading Kinetics for the Mesoporous Bioactive Glasses: Gurbinder Kaur1; 1Simon Fraser University
    Controlled drug delivery is one of the most advancing research area of biomedical engineering. The drug delivery systems offer number of advantages over the conventional treatment. Targeted drug delivery using mesoporous bioactive glasses (MBGs) has opened new era for the bone tissue regeneration applications. Our group aims at fabricating novel (MBGs) using CTAB/P127/F123 as structure directing agents to develop mesochannels. We propose viable approach to use novel mesoporous glasses as drug delivery vehicles and 3-D scaffold matrix for the tumor infected bones. The emphasis has been given on loading anticancerous, analgesic and antibacterial drugs simultaneously into the mesochannels, to obtain the effect of combined loading on release capability of MBGs. The innovation behind this approach is to heal any inflammatory response /bacterial infection apart from killing the infected malignant cells. The 3-D scaffolds of MBGs are further used for the bone regeneration or healing at the tumour infected sites. Bone-tissue engineering combines progenitor cells, such as mesenchymal stem cells or mature cells (for osteogenesis) seeded in biocompatible scaffolds (for osteoconduction and vascular ingrowth), with appropriate growth factors, in order to generate and maintain bone.

2:30 PM  
Multifunctional Exfoliated 2-D Oxides for Charge Storage: Madeleine Flint1; Peter Metz1; Robert Koch1; Peng Gao1; Alec Ladonis1; Scott Misture1; 1Alfred University
    δ-MnO2 2-D nanosheet assemblies have been studied in detail to define the effects of atomic-scale defects and nanostructure on charge transport, charge storage and catalytic properties. We find a direct link between charged defects and the optical, chemical, photochemical and electrochemical function. We focus our studies on 2-D nanosheets with charged defects on the metal sublattice introduced via equilibration in a controlled pH environment, resulting in nanosheet assemblies with little re-stacking along the c-axis. In-situ X-ray total scattering and spectroscopic synchrotron studies teamed with Raman spectroscopy demonstrate links between charged cation defect content and lattice response that correlate with charge storage. In-situ data also indicates δ-MnO2 nanosheet assemblies breathe laterally (by as much as 1%) during cycling, while retaining constant interlayer spacing.

2:50 PM  
Electrochemical Reactivity of 2D Confined Metallocenes: Michael Spencer1; 1North Carolina State University
    Electrocatalytic reactions are highly dependent on the physical interactions between the catalytic material and the reaction intermediates. The kinetics associated with such reactions are often sluggish, leading to high overpotentials, low energy efficiency, and high cost. While the effects of electrocatalyst composition, morphology, and surface area have been well-investigated, much less is known about the effect of physical confinement on electrochemical reaction kinetics. This is largely because confinement changes are difficult to decouple from other host properties that may simultaneously change, such as surface area or electronic structure. We propose that layered materials are ideally suited templates for investigating the fundamental effects of confinement on electrochemical reactivity. In particular, TiS2 is a conductive intercalation host material with flexible interlayer chemistry for accommodating redox-active metallocenes. This presentation will describe the synthesis of TiS2/metallocene hybrid materials and compare the electrochemical behavior of the metallocene under confinement by TiS2 vs. in the electrolyte.