http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Energy saving electrochromic windows from bistable low-HOMO level conjugated polymers
Shin, Haijin,Seo, Seogjae,Park, Chihyun,Na, Jongbeom,Han, Minsu,Kim, Eunkyoung The Royal Society of Chemistry 2016 ENERGY AND ENVIRONMENTAL SCIENCE Vol.9 No.1
<P>Energy saving electrochromic windows were established by controlling the interfacial charge transport using low-HOMO level (<-5 eV) pi-conjugated polymers as bistable electrochromic films and an ionic liquid as the electrolyte. It provided a long bistability (>90min) at the voltage-off state with a high color contrast (879 cm(2) C-1).</P>
Kim, Byeonggwan,Shin, Haijin,Park, Teahoon,Lim, Hanwhuy,Kim, Eunkyoung WILEY‐VCH Verlag 2013 Advanced Materials Vol.25 No.38
<P>The electrochromism and photothermoelectric properties of a poly(3,4‐ethylenedioxyselenophene) derivative are investigated by precisely controlling the morphology and applied electrical potential of the flexible polymer films. On page 5483, Eunkyoung Kim and co‐workers report a highly efficient and flexible photothermoelectric converter using doped poly(3,4‐ethylenedioxyselenophene)s. Efficient visible to near‐infrared absorption, photon to heat, and heat to electric conversion are realized in one polymer film. </P>
Switchable silver mirrors with long memory effects
Park, Chihyun,Seo, Seogjae,Shin, Haijin,Sarwade, Bhimrao D.,Na, Jongbeom,Kim, Eunkyoung Royal Society of Chemistry 2015 Chemical Science Vol.6 No.1
<▼1><P>An electrochemically stable and bistable switchable mirror is achieved for the first time by introducing a thiol-modified ITO electrode to stabilize the metallic film and ionic liquids as an anion-blocking layer, to achieve a long memory effect.</P></▼1><▼2><P>An electrochemically stable and bistable switchable mirror was achieved for the first time by introducing (1) a thiol-modified indium tin oxide (ITO) electrode for the stabilization of the metallic film and (2) ionic liquids as an anion-blocking layer, to achieve a long memory effect. The growth of the metallic film was denser and faster at the thiol-modified ITO electrode than at a bare ITO electrode. The electrochemical stability of the metallic film on the thiol-modified ITO was enhanced, maintaining the metallic state without rupture. In the voltage-off state, the metal film maintained bistability for a long period (>2 h) when ionic liquids were introduced as electrolytes for the switchable mirror. The electrical double layer in the highly viscous ionic liquid electrolyte seemed to effectively form a barrier to the bromide ions, to protect the metal thin film from them when in the voltage-off state.</P></▼2>
PEDOT as a Flexible Organic Electrode for a Thin Film Acoustic Energy Harvester
Kim, Younghoon,Na, Jongbeom,Park, Chihyun,Shin, Haijin,Kim, Eunkyoung American Chemical Society 2015 ACS APPLIED MATERIALS & INTERFACES Vol.7 No.30
<P>An efficient thin film acoustic energy harvester was explored using flexible poly(3,4-ethylene dioxythiophene) (PEDOT) films as electrodes in an all-organic triboelectric generator (AO-TEG). A thin film AO-TEG structured as PEDOT/Kapton//PET/PEDOT was prepared by the solution casting polymerization(SCP) on the dielectric polymer films. As-prepared AO-TEG showed high flexibility and durability due to the strong adhesion between the electrodes and the dielectric polymer. The short-circuit current density (<I>J</I><SUB>sc</SUB>), open-circuit voltage (<I>V</I><SUB>oc</SUB>), and maximum power density (Pw) reached 50 mA/m<SUP>2</SUP>, 700 V, and 12.9 W/m<SUP>2</SUP> respectively. The output current density decreased with the increase in the electrode resistance (<I>R</I><SUB>e</SUB>), but the energy loss in the organic electrodes was negligible. The AO-TEG could light up 180 LEDs instantaneously upon touching of the AO-TEG with a palm (∼120 N). With the flexible structure, the AO-TEG was worn as clothes and generated electricity to light LEDs upon regular human movement. Furthermore, the AO-TEG was applicable as a thin film acoustic energy harvester, which used music to generate electricity enough for powering of 5 LEDs. An AO-TEG with a PEDOT electrode (<I>R</I><SUB>e</SUB> = 200 Ω) showed instantaneous peak-to-peak voltage generation of 11 V under a sound pressure level (SPL) of 90–100 dB. The harvested acoustic energy through the AO-TEG was 350 μJ from the 4 min playing of the same single song. This is the first demonstration of a flexible triboelectric generator (TEG) using an organic electrode for harvesting acoustic energy from ambient environment.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/aamick/2015/aamick.2015.7.issue-30/acsami.5b02762/production/images/medium/am-2015-02762h_0006.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/am5b02762'>ACS Electronic Supporting Info</A></P>
Park, Teahoon,Na, Jongbeom,Kim, Byeonggwan,Kim, Younghoon,Shin, Haijin,Kim, Eunkyoung American Chemical Society 2015 ACS NANO Vol.9 No.12
<P>Photothermal effects in poly(3,4-ethylenedioxythiophene)s (PEDOTs) were explored for pyroelectric conversion. A poled ferroelectric film was coated on both sides with PEDOT <I>via</I> solution casting polymerization of EDOT, to give highly conductive and effective photothermal thin films of PEDOT. The PEDOT films not only provided heat source upon light exposure but worked as electrodes for the output energy from the pyroelectric layer in an energy harvester hybridized with a thermoelectric layer. Compared to a bare thermoelectric system under NIR irradiation, the photothermal-pyro-thermoelectric device showed more than 6 times higher thermoelectric output with the additional pyroelectric output. The photothermally driven pyroelectric harvesting film provided a very fast electric output with a high voltage output (<I>V</I><SUB>out</SUB>) of 15 V. The pyroelectric effect was significant due to the transparent and high photothermal PEDOT film, which could also work as an electrode. A hybrid energy harvester was assembled to enhance photoconversion efficiency (PCE) of a solar cell with a thermoelectric device operated by the photothermally generated heat. The PCE was increased more than 20% under sunlight irradiation (AM 1.5G) utilizing the transmitted light through the photovoltaic cell as a heat source that was converted into pyroelectric and thermoelectric output simultaneously from the high photothermal PEDOT electrodes. Overall, this work provides a dynamic and static hybrid energy cell to harvest solar energy in full spectral range and thermal energy, to allow solar powered switching of an electrochromic display.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/ancac3/2015/ancac3.2015.9.issue-12/acsnano.5b04042/production/images/medium/nn-2015-040428_0007.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/nn5b04042'>ACS Electronic Supporting Info</A></P>
핸즈프리 트렁크 모듈을 위한 킥 인식 알고리즘 및 테스트방법
송봉기(Bonggi Song),권대욱(Daewook Kwon),구원(Won Ku),이석우(Seagwoo Lee),유종일(Jongil Yu),신원호(Wonho Shin),서해진(Haijin Seo) 한국자동차공학회 2014 한국자동차공학회 학술대회 및 전시회 Vol.2014 No.11
Recently, The needs for convenience of a driver are increased. One of the requirements of the user experience is the development of hands-free trunk module. This module can be operated by user kick when a user carry things or hold umbrella in rainy weather. In this paper, we suggest a hands-free trunk module based on kick recognition algorithm. Also we suggest a testing method for it. The suggested system uses two electrostatic capacitance sensors. The upper sensor is used to indicate user access, and the other sensor is used to recognize user kick. We also propose a testing method for hands-free trunk module using image processing..