http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
양종렬,김진웅 한국피부장벽학회 2024 한국피부장벽학회지 Vol.26 No.1
School of Chemical Engineering, Sungkyunkwan University, Suwon, Korea Cellulose is one of the most abundant biomaterials on earth, which is a polysaccharide composed of a linear chain. Recently, cellulose has become a promising platform in the field of biomedical, electronics, food and cosmetics industry due to its low cost, ease of surface functionalization, biocompatibility and biodegradability. Moreover, cellulose can be chemically modified to customize their surface properties. Especially, hydrophobically modified cellulose, as a bio-surfactants, can adsorb to oil drops, thereby forming a fibrillary thin membrane, which is crucial for produce stable emulsion. This article reviews how hydrophobically modified cellulose should be designed to obtain effective interfacial assembly for emulsion stabilization.
A Class E Power Oscillator for 6.78-MHz Wireless Power Transfer System
양종렬 대한전기학회 2018 Journal of Electrical Engineering & Technology Vol.13 No.1
A class E power oscillator is demonstrated for 6.78-MHz wireless power transfer system. The oscillator is designed with a class E power amplifier to use an LC feedback network with a high-Q inductor between the input and the output. Multiple capacitors are used to minimize the variation of the oscillation frequency by capacitance tolerance. The gate and drain bias voltages with opposite characteristics to make the frequency shift of the oscillator are connected in a resistance distribution circuit located at the output of the low drop-out regulator and supplied bias voltages for class E operation. The measured output of the class E power oscillator, realized using the co-simulation, shows 9.2 W transmitted power, 6.98 MHz frequency and 86.5% transmission efficiency at the condition with 20 V V DS and 2.4 V V GS .