Zobrazeno 1 - 10
of 113
pro vyhledávání: '"Chang Hyeon Ji"'
Publikováno v:
International Journal of Optomechatronics, Vol 18, Iss 1 (2024)
This paper presents a one-dimensional scanning micromirror, utilizing Multi Jet Fusion three-dimensional (3D) printed polyamide 12 as its core material, with a gold-coated silicon mirror in a half-circle extension shape (4.2 mm × 15 mm). The micromi
Externí odkaz:
https://doaj.org/article/e8d76d344cdb4d558caf529153c182ce
Publikováno v:
Science and Technology of Advanced Materials, Vol 20, Iss 1, Pp 124-143 (2019)
In this paper, we look into the fundamental mechanism to retrieve the power from physical vibrations by using microelectromechanical systems (MEMS) energy harvesters. An analytical model is presented for the velocity-damped resonant generator (VDRG)
Externí odkaz:
https://doaj.org/article/2868780daffd427ca4d53cbdcf1736f0
Publikováno v:
Micro and Nano Systems Letters, Vol 6, Iss 1, Pp 1-7 (2018)
Abstract In this research, we present the feasibility testing results of a simple distance measurement system using microfabricated scanning micromirrors. Two different configurations have been tested with different types of micromirrors. In the firs
Externí odkaz:
https://doaj.org/article/eb771532ef534bdea87d8f2e2619a797
Autor:
Saeyeong Jeon, Youjin Lee, Daeho Ryu, Yoon Kyung Cho, Yena Lee, Sang Beom Jun, Chang-Hyeon Ji
Publikováno v:
Micromachines, Vol 12, Iss 6, p 725 (2021)
During the last decade, optogenetics has become an essential tool for neuroscience research due to its unrivaled feature of cell-type-specific neuromodulation. There have been several technological advances in light delivery devices. Among them, the
Externí odkaz:
https://doaj.org/article/5f77ff99b5fd41219239c6adfa0cd39e
Autor:
Sang Beom Jun, Yong-Kweon Kim, Chang-Hyeon Ji, Yoon Kyung Cho, Yena Lee, Saeyeong Jeon, Daeho Ryu, Youjin Lee
Publikováno v:
Journal of visualized experiments : JoVE. (187)
During the last decade, optogenetics has become an essential tool for the investigation of neural signaling due to its unique capability of selective neural modulation or monitoring. As specific types of neuronal cells can be genetically modified to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::36c54fab162aaf3a51cf26d562f67833
https://pubmed.ncbi.nlm.nih.gov/36121270
https://pubmed.ncbi.nlm.nih.gov/36121270
Publikováno v:
Micromachines, Vol 11, Iss 1, p 45 (2019)
Due to a limited lifetime of a battery, energy harvesters have been studied as alternative energy sources for implantable biomedical devices such as an implantable stimulator for epileptic seizure suppression. However, energy harvesters have weakness
Externí odkaz:
https://doaj.org/article/c8f40bf185304a91bafc5c569ba5b87b
Publikováno v:
IEEE Sensors Journal. 21:7358-7366
In this article, a low power and compact scanning micromirror for LiDAR (light detection and ranging) system is designed, fabricated, and characterized. A 5 mm-diameter scanning micromirror is electromagnetically actuated with multi-turn copper windi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b6ea641a77e2b3e456a680cb8d942ab
https://doi.org/10.1109/jsen.2020.3048710
https://doi.org/10.1109/jsen.2020.3048710
Autor:
Daeho Ryu, Youjin Lee, Yongseung Lee, Yena Lee, Seoyoung Hwang, Yong-Kweon Kim, Sang Beom Jun, Hyang Woon Lee, Chang-Hyeon Ji
Publikováno v:
Journal of neural engineering. 19(4)
Objective. This paper presents a conventional light emitting diode (LED) and polymer waveguide coupled silicon optrode array. Approach. Unique lens design at the waveguide inlet enables a high light coupling efficiency with a single LED light source,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6faeb62776981645e17e9f8e9733c037
https://pubmed.ncbi.nlm.nih.gov/35797969
https://pubmed.ncbi.nlm.nih.gov/35797969
Publikováno v:
Sensors and Actuators A: Physical. 348:113997
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a8faf636b35eb750cfe7940ae11316d
https://doi.org/10.1016/j.sna.2022.113997
https://doi.org/10.1016/j.sna.2022.113997
Publikováno v:
Sensors and Actuators A: Physical. 290:147-155
We herein present the design, fabrication, and wafer-level packaging of an electromagnetic biaxial scanning micromirror. The vacuum packaging of the micromirror was implemented by anodically bonding the glass cap wafer to both sides of the silicon su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7faf16003569ca2a2db0c168a1810764
https://doi.org/10.1016/j.sna.2019.03.021
https://doi.org/10.1016/j.sna.2019.03.021