Park J.H.,IM Co. |
Jeon B.J.,DONG Energy
Korean Journal of Materials Research | Year: 2013
The electrical and optical properties of fluorine-doped tin oxide films grown on polyethylene terephthalate film with a hardness of 3 using electron cyclotron resonance plasma with linear microwave of 2.45 GHz of high ionization energy were investigated. Fluorine-doped tin oxide films with a magnetic field of 875 Gauss and the highest resistance uniformity were obtained. In particular, the magnetic field could be controlled by varying the distribution in electron cyclotron deposition positions. The films were deposited at various gas flow rates of hydrogen and carrier gas of an organometallic source. The surface morphology, electrical resistivity, transmittance, and color in the visible range of the deposited film were examined using SEM, a four-point probe instrument, and a spectrophotometer. The electromagnetic field for electron cyclotron resonance condition was uniformly formed in at a position 16 cm from the center along the Z-axis. The plasma spatial distribution of magnetic current on the roll substrate surface in the film was considerably affected by the electron cyclotron systems. The relative resistance uniformity of electrical properties was obtained in film prepared with a magnetic field in the current range of 180~200A. SEM images showing the surface morphologies of a film deposited on PET with a width of 50 cm revealed that the grains were uniformly distributed with sizes in the range of 2~7 nm. In our experimental range, the electrical resistivity of film was able to observe from 1.0 × 10-2 to 1.0 × 10-1 Ωcm where optical transmittance at 550 nm was 87~89 %. These properties were depended on the flow rate of the gas, hydrogen and carrier gas of the organometallic source, respectively. © Materials Research Society of Korea.
Park J.H.,IM Co. |
Jeon B.J.,DONG Energy |
Lee J.K.,Korea Institute of Science and Technology
Surface and Coatings Technology | Year: 2015
In order to improve the interfacial contact resistance (ICR) and corrosion resistance of STS316 bipolar plates of PEMFCs, after surface pretreatment at mild plasma condition, the fluorine-doped tin oxides (FTO) thin films were deposited by electron cyclotron resonance-metal organic chemical vapor deposition. The mild plasma pre-treatment of the bipolar plate substrate before its coating with the FTO film has rendered a higher efficiency to the pertinent fuel cell, which can be attributed to a smooth charge transfer at the interface of the plate and the film due the removal of fine impurities on the substrate that could not be done just by washing. The deposition of FTO as a protect layer of fuel cell electrode after mild plasma pre-treatment improved the electrochemical stability. In our experimental range, with the increases in microwave power up to 1000. W, both of the corrosion resistance and ICR significantly decreased, however, those values sharply increased above 1100. W due to the crack and unstable film formation with the void space. Selecting the optimized value of the microwave power appeared to be the critical process step on the formation of the corrosion-protective layer for bipolar plates. © 2015.
Im Co. and Image Holdings Co. | Date: 2011-05-03
Lee K.,Korea Institute of Science and Technology |
Kim A.-Y.,Korea Institute of Science and Technology |
Kim A.-Y.,Korea University |
Park J.H.,Korea Institute of Science and Technology |
And 5 more authors.
Applied Surface Science | Year: 2014
The effect of interface morphology on electrochromic characteristics was examined for an electrochromic device (ECD). Micro-patterned fluorine-doped tin oxide (FTO) films were fabricated using a photolithography process. Prussian blue (PB) films were then deposited on the patterned FTO films. The surface areas of both PB films and FTO films were increased by patterning. ECDs were assembled using patterned PB/FTO films as the electrochromic electrode, bare FTO films as the counter electrode, and an electrolyte containing LiClO4 salt. The increased effective surface area of the patterned PB/FTO electrode boosted the mobility of ions at the interphase between the electrolyte and PB electrode, and the electron transfer between PB films and FTO films. As a result, electrochromic properties such as transmittance and response time were significantly improved by employing the patterned FTO films as the transparent conductive oxide layer of the electrochromic electrode. © 2014 Elsevier B.V. All rights reserved.
Roh J.K.,Korea University |
Kim H.J.,IM Co. |
Kim K.I.,Korea University
Transactions of the Korean Institute of Electrical Engineers | Year: 2014
Recently, as the wide spread of smart phone, pico projector which is usod at the smart.phone is appeared as a portable display device. In this paper, among several pico projectors, laser beam scanner module is dealt with in which laser is used as light source, and mems-mirror is used as optical panel. In this device, screen image quality is a special issue, and blur effect is a typical adverse effect to the quality of this device. So the enhancement of this blur effect has an important factor of the quality of the device. The definition of the blur and the main source of the blur are studied and the simulation results and way of improvement are also suggested.
Hyundai Motor Company and IM Co. | Date: 2015-06-28
A touch sensor for a curved display includes: a first sensor including a) first sensor patterns arranged on a first flexible plastic substrate so as to be continuous in a first direction and spaced apart from each other by a predetermined interval in a second direction and b) first dummy patterns arranged between the first sensor patterns on the first flexible plastic substrate; a second sensor including a) second sensor patterns arranged on a second flexible plastic substrate so as to be continuous in the second direction and be spaced apart from each other by a predetermined interval in the first direction and b) second dummy patterns arranged between the second sensor patterns on the second flexible plastic substrate; and an adhering part causing the first sensor and the second sensor to adhere to each other.
Im Co. | Date: 2012-11-21
Skin cleansing gels; face washing foams; moisturizing lotions; skin moisturizing concentrates; moisturizing creams; shampoos; hair conditioners; body soaps; skin creams; cosmetic sunscreen preparations; make-up bases; liquid foundation; loose face powder; soaps and detergents; cosmetics.
PubMed | IM Co., Korea University, Dongguk University, Korea Institute of Science and Technology and Korea Advanced Institute of Science and Technology
Type: Journal Article | Journal: Nanoscale | Year: 2016
Despite its excellent optical, electrical, mechanical, and thermal performances, a silver nanowire (AgNW)-based transparent conducting heater (TCH) still demonstrates several drawbacks such as facile nanowire breakdown on application of a high DC voltage, easy oxidation when exposed to harsh environments, leading to increased surface resistivity, and high resistance among wire junctions causing nonhomogeneous temperature profiles. To overcome these issues, the AgNW was hybridized with other transparent heating materials made of fluorine-doped tin oxide (FTO) thin films and NiCr nanodots (FTO/NiCr/AgNW). The dispersed NiCr nanodots (50 nm) and FTO thin films (20 nm) electrically bridge the nanowire junctions leading to a decreased sheet resistance and uniform temperature profiles. The hybrid transparent heater shows excellent optical transmittance (>90%) and high saturation temperature (162 C) at low applied DC voltage (6 V). Moreover, the FTO/NiCr/AgNW heater exhibits a stable sheet resistance in a hostile environment, hence highlighting the excellent oxidation-resistance of the heating materials. These results indicate that the proposed hybrid transparent heaters could be a promising approach to combat the inherent problems associated with AgNW-based transparent heaters for various functional applications.
Non-medicated skin care preparations, namely, cleansing gels; washing foams; moisture lotions; skin moisturizer; moisture creams; shampoos; conditioners; body soaps; sunscreen preparations; make-up bases; liquid foundation; loose face powder; facial soaps; skin lotions; cosmetic preparations for treatment of oily skin; face milk; cosmetic gels for acne.
IM Incorporated | Date: 2012-06-12
Apparel, namely, T-shirts. Providing on-line chat rooms for transmission of messages among users in a social network pertaining to topics of general interest; providing on-line chat rooms and electronic bulletin boards for transmission of data, messages, photos, audio, visual and multimedia content among users in a social network pertaining to topics of general interest; providing e-mail and instant messaging services; providing on-line chat rooms for transmission of messages and photos among computer users concerning topics of general interest; electronic transmission of data and documents via a global computer network.