• Proceedings of the Optical Society of Korea Conference
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• 2008.07a
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• pp.175-176
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• 2008

• Proceedings of the Membrane Society of Korea Conference
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• 1999.07a
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• pp.93-94
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• 1999

• Proceedings of the Microbiological Society of Korea Conference
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• 1999.04a
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• pp.49.1-49.1
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• 1999

• Proceedings of the Korean Society of Crop Science Conference
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• 2020.11a
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• pp.90-90
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• 2020

• Proceedings of the Korean Society of Crop Science Conference
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• 2023.04a
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• pp.129-129
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• 2023

• Proceedings of the KIEE Conference
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• 1992.07b
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• pp.843-846
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• 1992

This thesis was investigated on optical-and ion-induced characteristics in positive(a-$Se_{75}Ge_{25}$) and negative (Ag/a-$Se_{75}Ge_{25}$) resists for focused-ion-beam microlithogaphy. The a-$Se_{75}Ge_{25}$ inorganic thin film shows an increase in optical absorption after exposure to$\sim$$10^{16}$ dose(ions/$cm^{2}$) of Ga ions. The observed shift in the absorption edge toward longer wavelengths is consistent with that in films exposed to band-gap photons ($\sim$$10^{20}$ photons/$cm^{2}$). But, ion induced shift is twice as much as that in film exposed to optical radiation. This result may be related with microstructural rearrangements with in the short range of SeGe network. Due to changes in the short range order, the chemical bonding may be affected, which results in increased chemical dissolution in ion-induced film. Also, this resist exhibits good thermal stability because of its high Tg(~220$^{\circ}C$). The composition of deposited film measured by AES is consistent with that of bulk.

• Journal of Environmental Science International
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• v.20 no.2
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• pp.231-239
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• 2011

Diethyl phthalate (DEP) and nonylphenol (NP) are widely spread in the natural environment as an endocrine disruption chemicals (EDs). Therefore, in this study, ultrasound (US) and ultraviolet (UVC), including $TiO_2$, as advanced oxidation processes (AOPs) were applied to a DEP and NP contaminated solution. When only the application of US, the optimum frequency for significant DEP degradation and a high rate of hydrogen peroxide ($H_2O_2$) formation was 283 kHz. We know that the main mechanism of DEP degradation is radical reaction and, NP can be affected by both of radical reaction and pyrolysis through only US (sonolysis) process and combined US+UVC (sonophotolysis) process. At combined AOPs (sonophotolysis/sonophotocatalysis) such as US+UVC and US+UVC+$TiO_2$, significant degradation of DEP and NP were observed. Enhancement effect of sonophotolysis and sonophotocatalysis system of DEP and NP were 1.68/1.38 and 0.99/1.17, respectively. From these results, combined sonophotocatalytic process could be more efficient system to obtain a significant DEP and NP degradation.

• JSTS:Journal of Semiconductor Technology and Science
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• v.13 no.6
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• pp.581-588
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• 2013

This paper presents a study of the process temperature dependence of $Al_2O_3$ film grown by thermal atomic layer deposition (ALD) as a passivation layer in the crystalline Si (c-Si) solar cells. The deposition rate of $Al_2O_3$ film maintained almost the same until $250^{\circ}C$, but decreased from $300^{\circ}C$. $Al_2O_3$ film deposited at $250^{\circ}C$ was found to have the highest negative fixed oxide charge density ($Q_f$) due to its O-rich condition and low hydroxyl group (-OH) density. After post-metallization annealing (PMA), $Al_2O_3$ film deposited at $250^{\circ}C$ had the lowest slow and fast interface trap density. Actually, $Al_2O_3$ film deposited at $250^{\circ}C$ showed the best passivation effects, that is, the highest excess carrier lifetime (${\tau}_{PCD}$) and lowest surface recombination velocity ($S_{eff}$) than other conditions. Therefore, $Al_2O_3$ film deposited at $250^{\circ}C$ exhibited excellent chemical and field-effect passivation properties for p-type c-Si solar cells.

• Journal of Acupuncture Research
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• v.34 no.1
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• pp.67-79
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• 2017

Objectives : The aim of this study was to report the effect of Korean medical therapy on pain and dysfunction after anterior cruciate ligament (ACL) reconstruction. Methods : A 25-year-old man experienced severe pain after right ACL reconstruction surgery. He received Korean medical treatments such as acupuncture, herbal medicine, and physiotherapy from July 10, 2014 to August 2, 2014. Results : After the treatments, his visual analogue scale scores generally decreased and the range of motion of the right knee improved from $0^{\circ}$ to $90^{\circ}$. Furthermore, the Knee Infury and Osteoarthritis Outcome Score increased from 99 to 142. Conclusion : The findings suggest that Korean medical treatments might be effectively used to treat pain and dysfunction after soft-tissue surgeries such as ACL reconstruction. Nevertheless, further research is warranted because of the limited sample size of this study.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.33 no.4
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• pp.133-144
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• 2020

Objectives : The purpose of this study is to report the effect of Korean medicine treatment on limitation of eye movement in Miller-Fisher Syndrome. Methods : A patient was treated with herbal medicines, acupuncture(including electropuncture, phamacopuncture), Moxibustion and cupping therapy. To evaluate the result of this treatment, we used photographs of eye movement, Scott and Kraft score of both eye, length of eyeball movement and visual analogue scale(VAS) for subjective symptoms. Results : After treatment, the limitation of eye movement and diplopia were remarkably improved. Also, other symptoms such as dizziness, gait disturbance, facial nerve disorder were disappeared. Conclusions : This study suggests that Korean medicine treatments are effective for patient with limitation of eye movement in Miller-Fisher Syndrome.