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Wang, Zhongkai (author), Choi, Minsoo (author), Kwon, Paul (author), Lee, Kyoungtae (author), Yin, Bozhi (author), Liu, Zhaokai (author), Park, Kwanseo (author), Biswas, Ayan (author), Du, S. (author)This paper presents a complete 200Gb/s PAM-4 transmitter (TX) in 28nm CMOS technology. The transmitter features a hybrid sub-sampling PLL (SSPLL) with a delta-sigma (?S) modulator, clock distribution network with flexible timing control, and data path with a hybrid 5-tap Feed-Forward Equalizer (FFE) and T-coil for bandwidth extension. The...conference paper 2022
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Yoon, Juhee (author), Kwon, Min Hee (author), Shin, D. (author), Lee, Sang Wook (author)Mechanical resonance properties of porous graphene resonators were investigated by simulation studies. The finite element method was utilized to design the porous graphene membrane pattern and to calculate the mechanical resonance frequency and quality factor. The changes in the resonance frequency and quality factor were systematically...journal article 2021
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Cha, Hee Jeong (author), Hwang, Se Yeun (author), Lee, Da Som (author), Kumar, Akula Ravi (author), Kwon, Yong Uk (author), Voß, Moritz (author), Schuiten, Eva (author), Bornscheuer, Uwe T. (author), Hollmann, F. (author)Long-chain aliphatic amines such as (S,Z)-heptadec-9-en-7-amine and 9-aminoheptadecane were synthesized from ricinoleic acid and oleic acid, respectively, by whole-cell cascade reactions using the combination of an alcohol dehydrogenase (ADH) from Micrococcus luteus, an engineered amine transaminase from Vibrio fluvialis (Vf-ATA), and a...journal article 2020