High Areal Energy Density 3D Lithium-Ion Microbatteries

Autor: Janet I. Hur, Leland Smith, Bruce Dunn

Publikováno v: Joule. 2:1187-1201

Summary Three-dimensional (3D) microbatteries offer an opportunity to provide mobile power at dimensions that are comparable with those of the actuators, sensors, and other internet-connected devices that constitute the internet of things (IoT). To o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::67fcf179b5fd2a5757951a6401b58dec
https://doi.org/10.1016/j.joule.2018.04.002

Fabrication of Very-High-Aspect-Ratio Micro Metal Posts and Gratings by Photoelectrochemical Etching and Electroplating

Autor: Xin Zhao, Janet I. Hur, Guangyi Sun, Chang-Jin Kim

Publikováno v: Journal of Microelectromechanical Systems. 20:876-884

A high-yield fabrication process for dense arrays of very-high-aspect-ratio (VHAR) freestanding metal posts and gratings is developed. Silicon molds of regularly arranged through-holes or trenches are first fabricated by photoelectrochemical etching.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::78f3301efccbff941993109929be195c
https://doi.org/10.1109/jmems.2011.2148163

Two types of Cassie-to-Wenzel wetting transitions on superhydrophobic surfaces during drop impact

Autor: Henri Lastakowski, Christophe Pirat, Christophe Ybert, Janet I. Hur, Seungwon Shin, Chang-Jin Kim, Youngsuk Nam, Choongyeop Lee, Anne-Laure Biance

Publikováno v: Soft Matter
Soft Matter, Royal Society of Chemistry, 2015, 11 (23), pp.4592-4599. ⟨10.1039/c5sm00825e⟩
Lee, C; Nam, Y; Lastakowski, H; Hur, JI; Shin, S; Biance, AL; et al.(2015). Two types of Cassie-to-Wenzel wetting transitions on superhydrophobic surfaces during drop impact. Soft Matter, 11(23), 4592-4599. doi: 10.1039/c5sm00825e. UCLA: Retrieved from: http://www.escholarship.org/uc/item/92n352q6
Soft matter, vol 11, iss 23

© The Royal Society of Chemistry 2015. Despite the fact that superhydrophobic surfaces possess useful and unique properties, their practical application has remained limited by durability issues. Among those, the wetting transition, whereby a surfac

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ecff3ef23c7ab9b6453cb67b2c42fdef
https://hal.archives-ouvertes.fr/hal-01628786

Self-Pumping membraneless miniature fuel cell with an air-breathing cathode

Autor: Dennis Desheng Meng, Janet I. Hur, Chang-Jin Kim

Publikováno v: Hur, JI; Meng, DD; & Kim, CJ. (2012). Self-Pumping membraneless miniature fuel cell with an air-breathing cathode. Journal of Microelectromechanical Systems, 21(2), 476-483. doi: 10.1109/JMEMS.2011.2176920. UCLA: Retrieved from: http://www.escholarship.org/uc/item/4w98g8gj
Journal of Microelectromechanical Systems, vol 21, iss 2

We introduce a simple and compact fuel-cell architecture consisting of only solid channels and demonstrate its validity by developing a miniature direct formic acid fuel cell (DFAFC). The proposed architecture generates electric power while pumping t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ac87ce7bee0e5bada79119e5c90bd066
http://www.escholarship.org/uc/item/4w98g8gj

Membranelss micro fuel cell chip enabled by self-pumping of fuel-oxidant mixture

Autor: Chang-Jin Kim, Dennis Desheng Meng, Janet I. Hur

Publikováno v: 2010 IEEE 23rd International Conference on Micro Electro Mechanical Systems (MEMS).

Despite the significant research in micro fuel cells, miniaturizing a whole fuel cell system to below a few millimeters did not appear feasible until very recently, because ancillary parts (e.g. external pump, gas separator) are needed to complete a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cd412b6ec3ce0cc109914e66e7fa478d
https://doi.org/10.1109/memsys.2010.5442538