Search

Your search keyword '"SANG-HYUN LEE"' showing total 14 results
Start Over Author "SANG-HYUN LEE" Publisher american chemical society
14 results on '"SANG-HYUN LEE"'

1. Nanomaterials for Biomedicine

Author

R. Nagarajan, Will Briley, Tiffany L. Halo, Pratik S. Randeria, Ali H. Alhasan, Evelyn Auyeung, Sarah J. Hurst, Chad A. Mirkin, L. Andrew Lee, Elizabeth Balizan, Yuan Lin, Qian Wang, Ernesto Soto, Gary Ostroff, Marya Ahmed, Ravin Narain, Paresh Chandra Ray, Sadia Afrin Khan, Anant Kumar Singh, Dulal Senapati, Zhen Fan, Teresa Demeritte, Rajashekhar Kanchanapally, J. Liu, K. Chamakura, R. Perez-Ballestero, S. Bashir, Trevor J. Simmons, Christopher J. Rivet, Gurtej Singh, Julie Beaudet, Eric Sterner, Daniela Guzman, Daniel P. Hashim, Sang-Hyun Lee, Guoguang Qian, Kim M. Lewis, Pankaj Karande, Pulickel M. Ajayan, Ryan J. Gilbert, Jonathan S. Dordick, Robert J. Linhardt, Honoh Suzuki, I-Yin Sandy Lee, Takuro Sakai, Y. Miyamoto, Y. Koshidaka, H. Noguchi, K. Oishi, H. Saito, H. Yukawa, N. Kaji, T. Ikeya, H. Iwata, Y. Baba, K. Murase, S. Hayashi, Christopher J. Ward, Megan DeWitt, Edward W. Davis, Ashish Datt, Nicholas Ndiege, Sarah C. Larsen, Vanesa Sanz, Jesus M. de la Fuente, Ana Dede, Yuan Yin, Anjana Jain, R. Nagarajan, Will Briley, Tiffany L. Halo, Pratik S. Randeria, Ali H. Alhasan, Evelyn Auyeung, Sarah J. Hurst, Chad A. Mirkin, L. Andrew Lee, Elizabeth Balizan, Yuan Lin, Qian Wang, Ernesto Soto, Gary Ostroff, Marya Ahmed, Ravin Narain, Paresh Chandra Ray, Sadia Afrin Khan, Anant Kumar Singh, Dulal Senapati, Zhen Fan, Teresa Demeritte, Rajashekhar Kanchanapally, J. Liu, K. Chamakura, R. Perez-Ballestero, S. Bashir, Trevor J. Simmons, Christopher J. Rivet, Gurtej Singh, Julie Beaudet, Eric Sterner, Daniela Guzman, Daniel P. Hashim, Sang-Hyun Lee, Guoguang Qian, Kim M. Lewis, Pankaj Karande, Pulickel M. Ajayan, Ryan J. Gilbert, Jonathan S. Dordick, Robert J. Linhardt, Honoh Suzuki, I-Yin Sandy Lee, Takuro Sakai, Y. Miyamoto, Y. Koshidaka, H. Noguchi, K. Oishi, H. Saito, H. Yukawa, N. Kaji, T. Ikeya, H. Iwata, Y. Baba, K. Murase, S. Hayashi, Christopher J. Ward, Megan DeWitt, Edward W. Davis, Ashish Datt, Nicholas Ndiege, Sarah C. Larsen, Vanesa Sanz, Jesus M. de la Fuente, Ana Dede, Yuan Yin, and Anjana Jain

Subjects
Nanotechnology, Biomedical engineering, Nanomedicine, Nanostructured materials--Health aspects
Published
2012

2. Application of Carbon Nanotubes to Wound Healing Biotechnology

Author

Robert J. Linhardt, Eric Sterner, Daniel P. Hashim, Pankaj Karande, Julie M. Beaudet, Pulickel M. Ajayan, Guoguang Qian, Daniela Guzman, Kim M. Lewis, Gurtej Singh, Christopher J. Rivet, Sang Hyun Lee, Ryan J. Gilbert, Jonathan S. Dordick, and Trevor J. Simmons

Subjects
law, Chemistry, Nanotechnology, Carbon nanotube, Wound healing, law.invention
Published
2012
Full Text
View/download PDF

4. Ionic Liquid Applications: Pharmaceuticals, Therapeutics, and Biotechnology

Author

Sanjay V. Malhotra, Vineet Kumar, James Ternois, Laurent Ferron, Gérard Coquerel, Frédéric Guillen, Jean-Christophe Plaquevent, Pedro Lozano, Teresa De Diego, Arturo Manjón, Miguel A. Abad, Michel Vaultier, José L. Iborra, Chieu D. Tran, Yuichi Kobayashi, Yohei Kiyotsuka, Hukum P. Acharya, Key Miyoshi, Yangyang Jiang, Chen Guo, Hansong Xia, Huizhou Liu, Asako Narita, Kensuke Naka, Yoshiki Chujo, Sang Hyun Lee, Minoru Miyauchi, Jonathan S. Dordick, Robert J. Linhardt, Raquel F. M. Frade, Ana Matias, Luis C. Branco, Nuno M. T. Lourenço, João N. Rosa, Carlos A. M. Afonso, Catarina M. M. Duarte, Hiroe Satoh, Momoko Hayashi, Toshifumi Satoh, Toyoji Kakuchi, Harumi Kaga, Kenji Takahashi, Toshiyuki Itoh, Yoshikazu Abe, Takuya Hirakawa, Nagisa Okano, Shino Nakajima, Shuichi Hayase, Motoi Kawatsura, Tomoko Matsuda, Kaoru Nakamura, Johnathan T. Gorke, Friedrich Srienc, Romas J. Kazlauskas, M. Petkovic, J. Ferguson, A. Bohn, J. R. Trindade, I. Martins, C. Leitão, M. B. Carvalho, C. Rodrigues, H. Garcia, R. Ferreira, K. R. Seddon, L. P. N. Rebelo, C. Silva Perei, Sanjay V. Malhotra, Vineet Kumar, James Ternois, Laurent Ferron, Gérard Coquerel, Frédéric Guillen, Jean-Christophe Plaquevent, Pedro Lozano, Teresa De Diego, Arturo Manjón, Miguel A. Abad, Michel Vaultier, José L. Iborra, Chieu D. Tran, Yuichi Kobayashi, Yohei Kiyotsuka, Hukum P. Acharya, Key Miyoshi, Yangyang Jiang, Chen Guo, Hansong Xia, Huizhou Liu, Asako Narita, Kensuke Naka, Yoshiki Chujo, Sang Hyun Lee, Minoru Miyauchi, Jonathan S. Dordick, Robert J. Linhardt, Raquel F. M. Frade, Ana Matias, Luis C. Branco, Nuno M. T. Lourenço, João N. Rosa, Carlos A. M. Afonso, Catarina M. M. Duarte, Hiroe Satoh, Momoko Hayashi, Toshifumi Satoh, Toyoji Kakuchi, Harumi Kaga, Kenji Takahashi, Toshiyuki Itoh, Yoshikazu Abe, Takuya Hirakawa, Nagisa Okano, Shino Nakajima, Shuichi Hayase, Motoi Kawatsura, Tomoko Matsuda, Kaoru Nakamura, Johnathan T. Gorke, Friedrich Srienc, Romas J. Kazlauskas, M. Petkovic, J. Ferguson, A. Bohn, J. R. Trindade, I. Martins, C. Leitão, M. B. Carvalho, C. Rodrigues, H. Garcia, R. Ferreira, K. R. Seddon, L. P. N. Rebelo, and C. Silva Perei

Subjects
Ionic solutions--Therapeutic use
Published
2010

10. Optical Resonant Cavity in a Nanotaper.

Author

Sang Hyun Lee, Takenari Goto, Hiroshi Miyazaki, Jiho Chang, and Takafumi Yao

Subjects
*NANOSTRUCTURED materials, *FINITE differences, *WAVELENGTHS, *ZINC oxide, *OPTICAL reflection, *PHOTONICS, *SIMULATION methods & models
Abstract

The present study describes an optical resonant cavity in a nanotaper with scale reduction from micro to several nanometers. Both experimental results and a finite-difference time-domain (FDTD)-based simulation suggested that the nanometer-scale taper with a diameter similar to the wavelength of light acted as a mirror, which facilitated the formation of a laser cavity and caused lasing in ZnO nanotapers. As the light inside the nanotaper propagated toward the apex, the lateral mode was reduced and reflection occurred. This report suggests that use of the resonant optical cavities in nanotapers might result in novel active and passive optical components, which will broaden the horizons of photonic technology. [ABSTRACT FROM AUTHOR]

Published
2010
Full Text
View/download PDF

11. Ordered Arrays of ZnO Nanorods Grown on Periodically Polarity-Inverted Surfaces.

Author

Sang Hyun Lee, Tsutomu Minegishi, Jin Sub Park, Seung Hwan Park, Jun-Seok Ha, Hyo-Jong Lee, Hyun-Jae Lee, Sungmo Ahn, Jaehoon Kim, Heonsu Jeon, and Takafumi Yao

Subjects
*MOLECULAR beam epitaxy, *CRYSTAL growth, *MOLECULAR dynamics, *NANOWIRES
Abstract

Periodically polarity inverted (PPI) ZnO templates were fabricated using molecular beam epitaxy by employing MgO buffer layers. The polarity of ZnO film was controlled by the transformation of crystal structure from hexagonal to rocksalt due to the thickness of the MgO buffer layers. The polarity of ZnO in the PPI template was confirmed by AFM and PRM measurement. Higher growth rate and lower current value under positive supplied voltage in the region of Zn-polar were measured with comparing to that of O-polar. Holographic lithographic technique was employed for the realization of submicron pattern of periodical inverted polar ZnO over large area. After reaction using a carbothermal reduction, spatially well-separated ZnO nanorods with pitch of submicron were only observed in the Zn-polar regions. The possible reason for the difference of surface characteristics was considered as being due to the configuration of dangling bonds according to polarity. [ABSTRACT FROM AUTHOR]

Published
2008
Full Text
View/download PDF

12. Shape Evolution of ZnTe Nanocrystals:  Nanoflowers, Nanodots, and Nanorods.

Author

Sang Hyun Lee, Yun Ju Kim, and Jeunghee Park

Subjects
*NANOCRYSTALS, *ZINC telluride, *AMINES, *CHEMICAL reactions
Abstract

We synthesized highly crystalline zinc telluride (ZnTe) nanocrystals with a controlled shape using various growth conditions. The following amines were used as activation agents for the zinc precursor:  zinc stearate, octylamine (OA), dodecylamine (DDA), octadecylamine (ODA), and trioctylamine (TOA). Unique 3-D nanoflowers (av size 20−120 nm) that consisted of a number of nanodots (av size 4−11 nm) were efficiently produced when no amine or TOA was used. Dispersed nanodots were produced when OA, DDA, or ODA were used. These results indicate that the steric effect of alkyl chains plays an important role in the formation of nanoflowers. Furthermore, the shape evolution from nanoflowers to nanorods occurred at higher growth temperatures, and nanoflowers and nanorods eventually evolved into nanodots after incubation. [ABSTRACT FROM AUTHOR]

Published
2007
Full Text
View/download PDF

13. Control of the ZnO Nanowires Nucleation Site Using Microfluidic Channels.

Author

Sang Hyun Lee, Hyun Jung Lee, Dongcheol Oh, Seog Woo Lee, Hiroki Goto, Ryan Buckmaster, Tomoyuki Yasukawa, Tomokazu Matsue, Soon-Ku Hong, HyunChul Ko, Meoung-Whan Cho, and Takafumi Yao

Subjects
*NANOWIRES, *VAPOR-plating, *MICROFLUIDICS, *NUCLEATION
Abstract

We report on the growth of uniquely shaped ZnO nanowires with high surface area and patterned over large areas by using a poly(dimethylsiloxane) (PDMS) microfluidic channel technique. The synthesis uses first a patterned seed template fabricated by zinc acetate solution flowing though a microfluidic channel and then growth of ZnO nanowire at the seed using thermal chemical vapor deposition on a silicon substrate. Variations the ZnO nanowire by seed pattern formed within the microfluidic channel were also observed for different substrates and concentrations of the zinc acetate solution. The photocurrent properties of the patterned ZnO nanowires with high surface area, due to their unique shape, were also investigated. These specialized shapes and patterning technique increase the possibility of realizing one-dimensional nanostructure devices such as sensors and optoelectric devices. [ABSTRACT FROM AUTHOR]

Published
2006
Full Text
View/download PDF

14. Correlation between ZnO Nanowire Growth and the Surface of AlN Substrate.

Author

Sang Hyun Lee, In-Ho Im, Hyun Jung Lee, Zahra Vashaei, Takashi Hanada, Meoung-Whan Cho, and Takafumi Yao

Subjects
*NANOWIRES, *METAL catalysts, *PHOTOLITHOGRAPHY, *NANOSTRUCTURED materials
Abstract

Single-crystalline ZnO nanowires are fabricated by thermal chemical vapor transport and condensation on AlN epilayers without employing any metal catalyst. Before the growth of ZnO nanowires, the surface of AlN epilayers was treated by HF solution and then changed to a mixture of flat plane and hillocks according to dipping time. ZnO nanowires along the c-axis direction of hexagonal structures were synthesized only on the HF treated AlN surface. ZnO nanowire arrays have been obtained by selective etching by photolithography process. A mechanism for nanowire growth on modified AlN epilayer is proposed. [ABSTRACT FROM AUTHOR]

Published
2006
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results