Department of Chemical and Biomolecular Engineering
Korea Advanced Institute of Science and Technology

Faculty

Shin-Hyun Kim (김신현)

Associate Professor

Tel : +82-42-350-3911
Fax : +82-42-350-3910
E-mail : kim.sh@kaist.ac.kr
Homepage : http://isml.kaist.ac.kr
Education
- 2004. 3. ~ 2009. 1.: Ph.D., Chemical and Biomolecular Engineering, KAIST
- 2000. 3. ~ 2004. 2.: B.S., Chemical Engineering, Yonsei University

Employment and Professional Experience
- 2010. 3. ~ 2012. 5.: Postdoctoral researcher, Department of Physics and School of Engineering and Applied Science, Harvard University
- 2009. 2. ~ 2010. 2.: Postdoctoral researcher, Chemical and Biomolecular Engineering, KAIST
- 2005. 7. ~ 2006. 2.: Research Scholar, School of Engineering and Applied Science, Harvard University

Awards and Honors
- Featured Article in The Economist (2011)
- Featured Article in ‘News and Views’ of Nature and ‘Research Highlight’ of Nature Nanotechnology (2010)
- Featured Article in ‘News and Views’ of Nature Photonics (2009)
- Featured Article in ‘Research Highlights’ of Nature (2008)
- Featured Article in ‘Research Highlights’ of Nature Photonics (2008)
- Young Researcher Poster Award, μ-TAS2008 in San Francisco, USA (2008)
- Best Paper Award, National Meeting of the Optical Society of Korea in Jeju (2006)
- Summa Cum Laude, Yonsei University (2004)

Research interests
- Droplet-based microfluidics
- Microencapsulation and controlled release
- Synthesis of functional microparticles
- Development of new emulsification techniques
- Colloidal photonic crystals
- Simulation of capillarity and wetting phenomena

Selected Publications
1. Shin-Hyun Kim, Hyerim Hwang, and Seung-Man Yang, "Fabrication of Robust Optical Fibers by Controlling Film Drainage of Colloids in Capillaries," Angewandte Chemie International Edition, 51, 3661-3665 (2012).
2. Shin-Hyun Kim, Woong Chan Jeong, Hyerim Hwang and Seung-Man Yang, “Robust Chirped Photonic Crystals Created by Controlled Colloidal Diffusion,” Angewandte Chemie International Edition, 50, 11649-11653 (2011).-Selected as ’Inside Cover Paper’
3. Shin-Hyun Kim, Ho Cheung Shum, Jin Woong Kim, Jun-Cheol Cho, and David A. Weitz, “Multiple Polymersomes for Programmed Release of Multiple Components,” Journal of the American Chemical Society, 133, 15165–15171 (2011).
4. Shin-Hyun Kim, Jin Woong Kim, Jun-Cheol Cho, and David A. Weitz, “Double-emulsion drops with ultra-thin shells for capsule templates,” Lab on a Chip, 11, 3162–3166 (2011).
5. Shin-Hyun Kim and David A. Weitz, “One-step Emulsification of Multiple Concentric Shells with Capillary Microfluidic Devices,” Angewandte Chemie International Edition, 50, 8731 –8734 (2011).-Selected as 'Very Important Paper' (VIP) of the journal and highlighted in Press Release of the journal, The Economist, ChemistryViews, Nanowerk, and TCE today.
6. Shin-Hyun Kim, Alireza Abbaspourrad, and David A. Weitz, “Amphiphilic Crescent-Moon-shaped Microparticles formed by Selective Adsorption of Colloids,” Journal of the American Chemical Society, 133, 5516-5524 (2011).
7. Shin-Hyun Kim, Hyerim Hwang, Che Ho Lim, Jae Won Shim and Seung-Man Yang, “Packing of emulsion droplets: Structural and functional motifs for multi-cored microscapsules,” Advanced Functional Materials, 21, 1608-1615 (2011).-Selected as ’Back Cover Paper’
8. Shin-Hyun Kim, Jae Won Shim and Seung-Man Yang, “Microfluidic Multi-Color Encoding of Microspheres with Nanoscopic Surface Complexity for Multiplex Immunoassays,” Angewandte Chemie International Edition, 50, 1171-1174 (2011).-Selected as ’Inside Cover Paper’
9. Shin-Hyun Kim, Jae Young Sim, Jong-Min Lim and Seung-Man Yang, “Magnetoresponsive Microparticles with Nanoscopic Surface Structures for Remote-Controlled Locomotion,” Angewandte Chemie International Edition, 49, 3786-3790 (2010).-Featured in ‘Highlights’ of Nature Publishing Group Asia Materials (NPG Asia Materials 2, 122 2010).
10. Shin-Hyun Kim, Su Yeon Lee, and Seung-Man Yang, “Janus Microspheres for Highly Flexible and Impregnable Water-Repelling Interface,” Angewandte Chemie International Edition, 49, 2535-2538 (2010).- Selected as ’Cover Paper’ and ’Very Important Paper’ of the Journal and featured in ‘News and Views’ of Nature (Nature 464, 497 2010), ‘Research Highlight’ of Nature Nanotechnology (Nature Nanotechnology 5, 242 2010), and ‘Highlights’ of Angewandte Chemie International Edition (ANIE 49, 4542 2010).
11. Shin-Hyun Kim, Hyo Sung Park, Jae Hoon Choi, Jae Won Shim, and Seung-Man Yang, “Integration of Colloidal Photonic Crystals toward Miniaturized Spectrometers,” Advanced Materials, 22, 946-950 (2010).- Selected as ’Cover Paper’ of the Journal.
12. Shin-Hyun Kim, Se-Heon Kim, Woong Chan Jeong, and Seung-Man Yang, “Low-Threshold Lasing in 3D Photonic Crystals Derived from Colloidal Assemblies,” Chemistry of Materials, 21, 4993-4999 (2009).
13. Shin-Hyun Kim, Se-Heon Kim, and Seung-Man Yang, “Patterned Polymeric Domes with 3D and 2D Embedded Colloidal Crystals using Photocurable Emulsion Droplets,” Advanced Materials, 21, 3771-3775 (2009).–Selected as ’Inside Cover Paper’, ’Advances in Advance’, and ’The most accessed articles in Aug/2009‘ of the Journal and featured in ‘News and Views’ of Nature Photonics. (Nature Photonics 3, 562 2009).
14. Shin-Hyun Kim, Seog-Jin Jeon, Woong Chan Jeong, Hyo Sung Park, and Seung-Man Yang, “Optofluidic Synthesis of Electro-responsive Photonic Janus Balls with Isotropic Structural Colors,” Advanced Materials, 20, 4129-4134 (2008).–Featured as Research Highlight in Nature (Nature 456, 4 2008)
15. Shin-Hyun Kim, Jong-Min Lim, Woong Chan Jeong, Dae-Geun Choi and Seung-Man Yang, "Patterned Colloidal Photonic Domes and Balls Derived from Viscous Photocurable Suspensions," Advanced Materials, 20, 3211-3217 (2008).–Selected as ’Advances in Advance‘ of the Journal and featured in Materials Views (Materials Views 2008, September, A5)
16. Shin-Hyun Kim, Seog-Jin Jeon, and Seung-Man Yang, “Optofluidic Encapsulation of Crystalline Colloidal Arrays with Spherical Membranes,” Journal of the American Chemical Society, 130, 6040-6046 (2008).
17. Shin-Hyun Kim, Young-Sang Cho, Seog-Jin Jeon, Tai Hee Eun, Gi-Ra Yi and Seung-Man Yang, “Microspheres with Tunable Refractive Index by Controlled Assembly of Nanoparticles,” Advanced Materials, 20, 3268-3273 (2008).–Selected as ’Cover Paper‘ & ’The most accessed articles‘ in Feb/2008 - Jan/2009 of the Journal & featured as Research Highlight in Nature Photonics (Nature Photonics 2, 456 2008)
18. Shin-Hyun Kim, Seog-Jin Jeon, Gi-Ra Yi, Chul-Joon Heo, Jae Hoon Choi and Seung-Man Yang, “Optofluidic Assembly of Colloidal Photonic Crystals with Controlled Sizes, Shapes and Structures,” Advanced Materials, 20, 1649-1655 (2008).–Selected as ’Inside Cover Paper’, ’Advances in Advance‘ & ’The most accessed articles‘ in May/2008 of the Journal and featured in Materials Views (Materials Views 2008, June, A3)
19. Shin-Hyun Kim, Su Yeon Lee, Gi-Ra Yi, David J. Pine, and Seung-Man Yang, "Microwave-Assisted Self-Organization of Colloidal Particles in Confining Aqueous Droplets," Journal of the American Chemical Society, 128, 10897-10904 (2006).

Intelligent Soft-Materials Laboratory
Droplet-based microfluidics, Microencapsulation and controlled release, Synthesis of functional microparticles, Colloidal photonic crystals

■ Microencapsulation and controlled release

Encapsulation technologies have been intensively developed. Recently, these technologies have attracted considerable attention due to their increasing importance in various applications, ranging from drug delivery, cosmetics, and foods to emerging areas of display devices and medicine.  It is not surprising anymore that all commercialized E-papers (for example, “Amazon Kindle”) are based on microcapsules containing oppositely-charged black and white microparticles (called “E-ink”). Double-emulsion droplet is one of the most attractive templates for microcapsule fabrication due to their core-shell geometry. Recent advances in microfluidics have enabled to make such double-emulsion droplets in precisely controlled manner. In particular, multiple emulsions with controlled numbers of phases and cores have been prepared, which are useful to make microcapsules for controlled release of core materials.

■ Functional microparticles

Anisotropic or functional microparticles have great potential as a new class of colloidal materials with advanced applications. For example, Janus particles can be used as active pigments in new types of display devices, while chemically-patterned microparticles can be used as building blocks to construct photonic structures through directional interactions. In addition, amphiphilic microparticles are useful for stabilization of the interface between two immiscible fluids. Therefore, there remains intense demand for new classes of microparticles. However, surface energy drives microparticles spherical and isotropic, which makes it difficult to design new types of microparticles. We address this problem using various drop-based approaches in microfluidics.

■ Colloidal photonic crystals

Photonic crystals which have periodic modulation of dielectric constant in half-wavelength scale show unique optical properties related with photonic bandgap. Colloidal self-organization has enabled the construction of such 3D photonic crystals in facile and economic fashion by comparison with direct-writing or e-beam lithographic methods. Most previous studies have been devoted to wide area production with low defect density, controlled embedment of active defects, and patterning of the colloidal crystals with discrete colors. Unfortunately, however, practical uses of colloidal crystals were rarely reported due to their complex production conditions and low chemical resistance or physical rigidity, in spite of their high potential in various photonic applications. We have developed practical platform of colloidal photonic crystals to apply them into real application including display, miniaturized spectrometer, and photonic crystal fibers.