A5101717248- Block Copolymer Self-Assembly
- Advanced Polymer Synthesis and Characterization
- Advancements in Solid Oxide Fuel Cells
- Fuel Cells and Related Materials
- Technology Adoption and User Behaviour
- ZnO doping and properties
- Rheology and Fluid Dynamics Studies
- Advanced battery technologies research
- Polymer Surface Interaction Studies
- Organic Electronics and Photovoltaics
- Polymer crystallization and properties
- Advancements in Battery Materials
- Crystallization and Solubility Studies
- Electrohydrodynamics and Fluid Dynamics
- Technology and Data Analysis
- X-ray Diffraction in Crystallography
- Thermal and Kinetic Analysis
- Fluid Dynamics and Thin Films
- Iron and Steelmaking Processes
- Advanced Battery Materials and Technologies
- Supercapacitor Materials and Fabrication
- Pigment Synthesis and Properties
- Innovation in Digital Healthcare Systems
- Catalysis and Hydrodesulfurization Studies
- Extraction and Separation Processes
Ajou University
2021
University of Massachusetts Amherst
2015-2018
Amherst College
2017
Myongji University
2014-2017
Low molecular weight P2VP-b-PS-b-P2VP triblock copolymer (poly(2-vinlypyridine)-block-polystyrene-block-poly(2-vinylpyridine)] is doped with copper chloride and microphase separated into lamellar line patterns ultrahigh area density. Salt-doped self-assembled on the top of nanoimprinted photoresist template, metallic nanowires long-range ordering are prepared platinum-salt infiltration plasma etching.
A series of symmetric poly(solketal methacrylate-b-styrene) (PSM-b-PS) copolymers with varying molecular weights that can transform a hydrophobic PSM block to hydrophilic poly(glycerol monomethacrylate) (PGM) through an acid hydrolysis were investigated. This simple chemical transformation significantly enhances the segmental interaction parameter (χ), enabling phase-mixed copolymer (BCP) microphase separate without any additives. Temperature-dependent small-angle X-ray scattering (SAXS)...
We demonstrate that a minimal topographic pattern with confinement depth (D) much less than the domain spacing of block copolymers (L0) can be used to achieve highly ordered hexagonal arrays or unidirectionally aligned line patterns over large areas. Cylinder-forming poly(styrene-b-ethylene oxide) (PS-b-PEO) thin films were prepared on series single trench different widths (W) and D. Upon thermal annealing, cylindrical microdomains propagated away from edges trench, providing insight into...
Copolymer composed of two poly(2-vinylpyridine) blocks and one polystyrene block ((P2VP)2–PS) with a PS volume fraction (ΦPS) 0.44 was synthesized, their morphologies in bulk thin films were compared to linear copolymers (BCPs) having similar ΦPS (PS-b-P2VP). For the symmetric diblock copolymer, lamellar morphology observed after thermal annealing, as expected. However, (P2VP)2–PS showed hexagonally packed cylindrical microdomain forming microdomains P2VP matrix. In films, solvent annealing...
This study quantitatively characterizes BCP microdomains guided by topographic patterns using GISAXS, providing an in-depth understanding of the morphology.
We demonstrate the generation of block copolymer (BCP) line patterns oriented orthogonal to a very small (minimal) topographic trench pattern over arbitrarily large areas using solvent-vapor annealing. Increasing thickness BCP films induced an alignment cylindrical microdomains, where full microdomains with respect direction was obtained at film corresponding 1.70L0. A capillary flow solvent across trenches critical factor in microdomains. Grazing incidence small-angle X-ray scattering used...
Three-dimensional (3D) nanofabrication using the directed self-assembly of block copolymers (BCPs) holds great promise for nanoscale device fabrication and integration into 3D architectures over large areas with high element densities. In this work, a robust platform is developed building BCP tailored functionality micron-scale woodpile structures (WPSs), fabricated by multiphoton polymerization technique. By completely filling spaces WPSs interactions blocks BCPs struts WPS, well-developed...
Zinc oxynitride has good electrical characteristics applicable for thin-film transistors in display devices. Since nitrogen lower reactivity compared to oxygen, tiny amount of background oxygen can prohibit incorporation into the films. In order minimise effects hydrogen gas was introduced during sputtering growth. The main hypothesis that would react with density vacuum chamber. films were grown by rf using zinc metal target and gas. Energy dispersive spectroscopy results showed increased...