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926 results
  • Dielectric and Thermal Conductivity of Epoxy Resin Impregnated Nano-h-BN Modified Insulating Paper. [Journal Article]
    Polymers (Basel) 2019; 11(8)Yang H, Chen Q, … Ning X
  • Epoxy resin-impregnated insulation paper (RIP) composites are used as the inner insulation of dry condenser bushing in the ultra-high voltage direct current (UHVDC) power transmission system. To improve the dielectric properties and heat conductivity of RIP, hexagonal boron nitride (h-BN) nano-flakes are added to the insulation paper at concentrations of 0-50 wt % before impregnation with pure ep…
  • Nanosecond electron holography by interference gating. [Journal Article]
    Ultramicroscopy 2019; 206:112824Wagner T, Niermann T, … Lehmann M
  • The interference gating is a novel method for robust time-resolved electron holographic measurements by directly switching the interference. Here, a new arrangement is presented in which a biprism in the condenser aperture as a fast electric phase shifter is used to control the interference pattern. High-frequency stimulation of the electric phase shifter in the gigahertz range are performed and …
  • Functional Graphenic Materials That Seal Condenser Tube Leaks in Situ. [Journal Article]
    ACS Appl Mater Interfaces 2019; 11(23):20881-20887Arnold AM, Crytzer KR, … Sydlik SA
  • Undesirable condenser tube leaks frequently occur in power plants, resulting in reduced power output, increased burden on downstream systems, and substantial revenue losses. Current techniques such as wood flour provide temporary in situ remediation but lack adhesive properties to form stable seals. Here, we report the development of in situ sealants for long-term defect repair. The carboxylic ac…
  • Dielectric Properties of Epoxy Resin Impregnated Nano-SiO₂ Modified Insulating Paper. [Journal Article]
    Polymers (Basel) 2019; 11(3)Chen Q, Yang H, … Ning X
  • Epoxy resin-impregnated insulation paper (RIP) composites are used as the inner insulation of dry condenser bushing in the ultra-high voltage direct current (UHVDC) power transmission system. To improve the dielectric properties of RIP, nano-SiO₂ is added to the insulation paper at concentrations of 0⁻4wt % before impregnation with pure epoxy resin. X-ray diffraction (XRD), scanning electron micr…
  • A Vibro-Acoustic Hybrid Implantable Microphone for Middle Ear Hearing Aids and Cochlear Implants. [Journal Article]
    Sensors (Basel) 2019; 19(5)Seong KW, Mun HJ, … Cho JH
  • To develop totally implantable middle ear and cochlear implants, a miniature microphone that is surgically easy to implant and has a high sensitivity in a sufficient range of audio frequencies is needed. Of the various implantable acoustic sensors under development, only micro electro-mechanical system-type acoustic sensors, which attach to the umbo of the tympanic membrane, meet these requiremen…
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