Prof. Nam will serve as an Associate Editor of IEEE Transactions on Biomedical Engeering (T-BME). IEEE T-BME is a top tier peer-reviewed journal in biomedical engineering field. (link)
Gold nanostar-mediated neural activity control using plasmonic photothermal effects
Jee Woong Lee, Hyunjun Jung, Hui Hun Cho, Jung Heon Lee, Yoonkey Nam*
This work was led by Jee Woong in collaboration with Prof. Jung Heon Lee's lab (link) at Sungkyunkwan University. We used gold nanostar shaped nanoparticles to induce photothermal effects for neuromodulation. Unlike gold nanorods that are mainly used for phototheraml effects, our gold nano stars were synthesized by seedless methods under completely biocompatibile environment. We showed that gold nanostars were effective in inducing photothermal neural inhibition from single cell level to network level. HJ jung also contributed to this work with his DMD-based phototheraml patterning system for the single cell suppression experiment.
Source: Lee et al., Biomaterials 2018
한국공학한림원에서 선정한 '2025, 대한민국을 이끌 100대 기술과 주역'에 남윤기 교수가 뇌과학 응용기술 분야에 주역으로 선정되었습니다. (관련기사)
The National Academy of Engineering of Korea announced 'The Top 100 Technologies and Leaders in 2025 Korea'. Among the technologies, Prof. Nam was elected as the leader in Neurotechnology area
Prof. Nam gave a Keynote talk ("Nano-plasmonic neural interface: Modulating neural activity with light and heat") in Neurofluidics 2017 at Grenoble, France.
Prof. Andrew Schwartz (University of Pittsburgh, link), who is the world-leading neuroscientist in cortical neural prosthetics, visited our department and gave a seminar on 'Recent progress toward high-performance neural prosthetics'. After the talk, he visited NEL and shared his thought on in vitro neural recording technology with us. Check his recent research introduced in TV (link).
Professor Jungkyu Kim (Mechanical Engineering, Texas Tech University, link) and Professor Hyunjung Kim (Biomedical Engineering, University of Texas at Austin, link) visited NEL. Two US professors are well-known researchers in Ogran-on-a-Chip technology. Prof. Jungkyu Kim gave a talk titled "A universal microfluidic processor for Biological and Chemical Analysis:From biomolecule detection to space exploration", and Prof. Hyunjung Kim gave a talk titled "Microphysiological Human Gut-on-a-Chip: From Organ Mimicry to Personalized Healthcare" in KAIST. They were host by Prof. Jennifer Shin at Mechanical Engineering.
Digital Micromirror based Near-infrared Illumination System for Plasmonic Photothermal Neuromodulation
Hyunjun Jung, H. Kang, Y. Nam
This is Hyunjun Jung's first paper on his digital micro mirror system for NIR neural suppression experiments. In this paper, Jung reports the patterned photothermal stimulation of neuronal networks with plasmonic gold nanorod MEA chips.
Source: Jung et al. Biomed. Opt. Exp. 2017
Prof. Sergio Martinoia (University of Genova, link), who is one of the world leading researchers in MEA technology. He spend one day with NEL students and gave a talk on his recent research in 3D neuronal networks on MEAs.
Dr. Rudi Scharnweber (MD/PhD, Department of Neurosurgery, UCLA), who studied axon guidance and local protein synthesis in axon, visited us and gave a talk on engineering of immunotherapy for the treatment of malignant glioma. Dr. Scharnweber studied with Prof. Nam in University of Urbana-Champaing in 2001 - 2006.
Feasibility Study of Extended-gate Type Silicon Nanowire Field-Effect Transistors for Neural Recording
Honggi Kang, J.Y. Kim, Y.K. Choi*, Y. Nam*
This is Dr. Kang's first publication since he joined NEL. We collaborated with Prof. Yang-Kyu Choi's lab to study the performance of silicon nanowire FET transistor for a novel sensing device of neural signals. The device was fabricated from Prof. Choi's lab by Dr. Kim and Dr. Kang did the measurement and analysis in terms of neural recordings. Unlike previous related works, we tried to compare the signal-to-noise ratio of the SiNW-FET with conventional metal micro electrodes. (link)