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Vapor-phase deposition of organic/inorganic hybrid layers and their applications
임성갑 한국공업화학회 2020 한국공업화학회 연구논문 초록집 Vol.2020 No.-
Organic-inorganic hybrid dielectrics have attracted considerable attention for improving both the dielectric constant (k) and mechanical flexibility of the gate dielectric layer for emerging flexible and wearable electronics. However, conventional solution-based hybrid materials, such as nanocomposite and self-assembled nanodielectrics, have limitations in the dielectric quality when the thickness is deep-scaled, which is critical to realizing high-performance flexible devices. This study proposes a novel vapor-phase synthesis method to form an ultrathin, homogeneous, high-k organic-inorganic hybrid dielectric. A series of hybrid dielectrics is synthesized via initiated chemical vapor deposition (iCVD) in a one-step manner. The hybrid dielectric synthesized via the iCVD process is a promising candidate for highperformance, low-power flexible electronics
Vapor-phase deposited functional polymer films for energy and environmental applications
임성갑 한국공업화학회 2019 한국공업화학회 연구논문 초록집 Vol.2019 No.1
A new polymer deposition method, the initiated chemical vapor deposition (iCVD), was utilized for fabrication of novel thin film materials and structures. The iCVD is a process that can deposit functional polymer films with the exceptional compositional control and conformality. The solvent-free process provides non-toxic coatings of anti-microbial, superhydrophobic, functionalizable, insulating, and bio-compatible polymers without damaging underlying substrates. With this versatile tool, we are exploiting the possibility of the functional polymer coatings to develop next-generation of engineering devices. In this presentation, we are focusing on the application of functional polymer coatings to the energy and environmental applications.
A series of liquid separation system made of homogenous copolymer films
임성갑 한국공업화학회 2016 한국공업화학회 연구논문 초록집 Vol.2016 No.0
Exquisite surface wettability control of separation system surface is required to achieve separation of liquids with low surface tension difference. Here, we demonstrate a series of surface-energy-controlled homogeneous copolymer films to control the surface wettability of polyester fabric, utilizing a vapor-phase process, termed as initiated chemical vapor deposition (iCVD). The homogeneous copolymer films consist of a hydrophobic polymer, poly(2,4,6,8-tetrarnethyl-2,4,6,8-tetravinylcyclotetrasiloxane), pV4D4, and a hydrophilic polymer, poly(4-vinylpyridine), p4VP. Because the mixing of two or more components is always favorable in vapor phase, the iCVD process allows the formation of homogeneous copolymers from two immiscible, hydrophilic/hydrophobic monomer pairs, which is highly challenging to achieve in liquid phase. Simply by tuning the flow rate ratio of monomer pairs, a series of homogeneous copolymers with systematically controlled surface energy were formed successfully.
Vapor-phase deposited functional polymer films for wearable device applications
임성갑 한국공업화학회 2019 한국공업화학회 연구논문 초록집 Vol.2019 No.0
A new polymer deposition method, the initiated chemical vapor deposition (iCVD), was utilized for fabrication of novel thin film materials and structures. The iCVD is a process that can deposit functional polymer films with the exceptional compositional control and conformality. The solvent-free process provides non-toxic coatings of anti-microbial, superhydrophobic, functionalizable, insulating, and bio-compatible polymers without damaging underlying substrates. With this versatile tool, we are exploiting the possibility of the functional polymer coatings to develop next-generation of engineering devices. In this presentation, we are focusing on the application of functional polymer coatings to the wearable electronics applications.