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1. Full Text A cell-loss-free concave microwell array based size-controlled multi-cellular tumoroid generation for anti-cancer drug screening
by Lee, Sang Woo and Jeong, Soo Yeon and Shin, Tae Hoon and Min, Junhong and Lee, Donghyun and Jeong, Gi Seok
PloS one, 2019, Volume 14, Issue 7, p. e0219834
The 3D multi-cellular tumoroid (MCT) model is an in vivo-like, avascular tumor model that has received much attention as a refined screening platform for drug... 
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2. Surface modified solution-derived lanthanum-doped zinc oxide film for nematic liquid crystal system with free residual DC voltage
by Ju Hwan Lee and Eun-Mi Kim and Gi-Seok Heo and Hae-Chang Jeong and Dong Hyun Kim and Dong Wook Lee and Jeong-Min Han and Tae Wan Kim and Dae-Shik Seo
Materials Chemistry and Physics, ISSN 0254-0584, 07/2018, Volume 213, p. 383
The liquid crystal (LC) alignment characteristics of the solution-derived lanthanum-doped zinc oxide (La:ZnO) film with ion-beam (IB) irradiation were... 
Atomic force microscopy | Electric potential | Oxygen | Surface roughness | Nematic crystals | Liquid crystals | Molecules | Organic chemistry | Alignment | Breakage | Oxide coatings | Curing | Irradiation | Zinc oxide | Lanthanum | Hysteresis
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3. Full Text Stable and fast switching of liquid crystals on solution-derived compound oxide films irradiated by ion beam
by Gyu Park, Hong and Jeong, Hae-Chang and Lee, Ju Hwan and Heo, Gi-Seok and Kim, Eun-Mi and Kim, Tae Wan and Seo, Dae-Shik
Journal of Sol-Gel Science and Technology, ISSN 0928-0707, 9/2017, Volume 83, Issue 3, pp. 495 - 501
We fabricated stable, homogeneous, fast-switching liquid crystal cells on solution-processed zinc tin oxide films treated by ion-beam irradiation >1200 eV. The... 
Zinc-tin oxide | Materials Science | Ion-beam | Optical and Electronic Materials | Electrically controlled birefringence mode | Inorganic Chemistry | Ceramics, Glass, Composites, Natural Materials | Nanotechnology | X-ray photoelectron spectroscopy | NANOIMPRINT LITHOGRAPHY | ALIGNMENT | OPTICAL-PROPERTIES | MATERIALS SCIENCE, CERAMICS | Control engineering | X-ray spectroscopy | Aluminum | Industrial applications | Liquid crystals | Switching | Ion beams | Tin oxides | Casting | Alignment | Response time | Oxide coatings | Irradiation | Tin | Birefringence | Threshold voltage | Photoelectrons
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4. Full Text Solution-Derived Zn-Doped GaO Films as Alignment Layers for Twisted-Nematic Liquid Crystal Displays Using Ion-Beam Bombardment
by Yun-Gun Lee and Gi-Seok Heo and Hong-Gyu Park and Hae-Chang Jeong and Ju Hwan Lee and Dae-Shik Seo
IEEE Electron Device Letters, ISSN 0741-3106, 08/2015, Volume 36, Issue 8, pp. 817 - 819
This letter demonstrates liquid crystal (LC) alignment on solution-derived Zn-doped GaO (ZnGaO) films using an ion beam (IB) method. Homogeneous and uniform LC... 
Radiation effects | Voltage measurement | solution process | Films | Surface morphology | ZnGaO | Liquid crystal displays | liquid crystal alignment | Liquid crystals | electro-optical characteristics | ion beam irradiation | Ion beams | TRANSISTORS | Electro-optical characteristics | SURFACE | ENGINEERING, ELECTRICAL & ELECTRONIC
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5. Full Text Hysteresis-free, energy efficient twisted nematic liquid crystal systems based on IB-irradiated gallium-doped tin oxide films
by Jeong, Hae-Chang and Heo, Gi-Seok and Kim, Eun-Mi and Park, Hong-Gyu and Lee, Ju Hwan and Han, Jeong-Min and Seo, Dae-Shik
Journal of Sol-Gel Science and Technology, ISSN 0928-0707, 7/2016, Volume 79, Issue 1, pp. 29 - 36
We successfully demonstrated the high performance of liquid crystal (LC) devices without capacitance hysteresis using ion-beam (IB)-irradiated GaSnO in... 
Ceramics, Glass, Composites, Natural Methods | Optical and Electronic Materials | Liquid crystal alignment | Material Science | Inorganic Chemistry | Ion-beam irradiation | Sol–gel | Nanotechnology | Atomic force microscopy | Energy use | Anisotropy | Electric fields | Analysis | Gallium | Atomic beam spectroscopy | Display devices | Liquid crystals | Nematic crystals | Flexibility | Tin oxides | Reduction | Alignment | Cost effectiveness | Chemical bonds | Photoelectrons | Hysteresis | Hydroxyl groups | Crystal structure | Crystallinity | Transmittance | Ion beams | Organic chemistry | Oxide coatings | Irradiation | Capacitance | Electrons
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6. Full Text Digitally tunable physicochemical coding of material composition and topography in continuous microfibres
by Kang, Edward and Jeong, Gi Seok and Choi, Yoon Young and Lee, Kwang Ho and Khademhosseini, Ali and Lee, Sang-Hoon
Nature Materials, ISSN 1476-1122, 2011, Volume 10, Issue 11, pp. 877 - 883
Heterotypic functional materials with compositional and topographical properties that vary spatiotemporally on the micro- or nanoscale are common in nature.... 
FIBERS | PHYSICS, CONDENSED MATTER | SPIDER SILK | PHYSICS, APPLIED | DRUG-DELIVERY | MATERIALS SCIENCE, MULTIDISCIPLINARY | DEVICE | CHEMISTRY, PHYSICAL | GENERATION | SCAFFOLDS | FLOW | CARTILAGE | Microfluidics - instrumentation | Animals | Tissue Engineering - methods | Spiders | Coculture Techniques | Microfluidics - methods | Silk - chemistry | Flow control | Materials science | Fluid dynamics | Biomimetics | Fibers | Encapsulation | Nanocomposites | Microfibers | Topography | Nanomaterials | Collection | Nanostructure
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7. Full Text Cell encapsulation via microtechnologies
by Kang, AhRan and Park, JiSoo and Ju, Jongil and Jeong, Gi Seok and Lee, Sang-Hoon
Biomaterials, ISSN 0142-9612, 2014, Volume 35, Issue 9, pp. 2651 - 2663
Abstract The encapsulation of living cells in a variety of soft polymers or hydrogels is important, particularly, for the rehabilitation of functional tissues... 
Advanced Basic Science | Dentistry | Microencapsulation | Transplantation | Tissue engineering | Cell encapsulation | Microtechnology | Immune protection | VITRO OSTEOGENIC DIFFERENTIATION | MATERIALS SCIENCE, BIOMATERIALS | ENGINEERING, BIOMEDICAL | ALGINATE | DIABETIC-RATS | FOCUSING DEVICE | MESENCHYMAL STEM-CELLS | HYALURONIC-ACID | HYDROGEL | PANCREATIC-ISLETS | SECRETING CELLS | LIVING CELLS | Microspheres | Animals | Humans | Cells, Immobilized | Microtechnology - methods | Microfluidics | Cells - cytology | Polymers
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8. Full Text Electrical and optical properties of compositionally spread MoInSnO thin films deposited by combinatorial RF magnetron cosputtering
by Oh, Jeung Pyo and Kim, Eun Mi and Kim, Young-Baek and Woo, Jeong Joo and Kim, Tae-Won and Heo, Gi-Seok
Japanese Journal of Applied Physics, ISSN 0021-4922, 09/2015, Volume 54, Issue 9, p. 91101
Using a combinatorial cosputtering method, we have deposited MoInSnO transparent conducting oxide (TCO) films at various Ar : O-2 gas ratios, constituent... 
COATINGS | PHYSICS, APPLIED | OXIDE | ELECTROCHROMIC DEVICES
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9. Full Text Three-dimensional brain-on-a-chip with an interstitial level of flow and its application as an in vitro model of Alzheimer's disease
by Park, Jisoo and Lee, Bo Kyeong and Jeong, Gi Seok and Hyun, Jung Keun and Lee, C. Justin and Lee, Sang-Hoon
Lab on a Chip, ISSN 1473-0197, 01/2015, Volume 15, Issue 1, pp. 141 - 150
There has been a growing need for in vitro models of neurodegenerative diseases such as Alzheimer's disease that would enable a better understanding of... 
3RD-DIMENSION | TISSUE | BIOCHEMICAL RESEARCH METHODS | NANOSCIENCE & NANOTECHNOLOGY | CHEMISTRY, MULTIDISCIPLINARY | MESENCHYMAL STEM-CELLS | PEPTIDE | CULTURE-SYSTEM | CONCAVE-MICROWELL ARRAYS | NEURONS | GENERATION | DIFFERENTIATION | EMBRYOID BODIES | Microfluidic Analytical Techniques - methods | Cell Survival - drug effects | Cell Culture Techniques - instrumentation | Amyloid beta-Peptides - pharmacology | Spheroids, Cellular - metabolism | Microfluidic Analytical Techniques - instrumentation | Rats | Spheroids, Cellular - cytology | Cell Culture Techniques - methods | Cerebral Cortex - cytology | Cerebral Cortex - metabolism | Extracellular Space - metabolism | Animals | Cell Differentiation - drug effects | Alzheimer Disease - metabolism | Extracellular Space - chemistry | Spheroids, Cellular - drug effects | Cerebral Cortex - drug effects | In Vitro Techniques | Microscopy, Fluorescence
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10. Three-dimensional brain-on-a-chip with an interstitial level of flow and its application as an in vitro model of Alzheimer's disease
by Park, JiSoo and Lee, Bo Kyeong and Jeong, Gi Seok and Hyun, Jung Keun and Lee, CJustin and Lee, Sang-Hoon
Lab on a chip, ISSN 1473-0197, 01/2015, Volume 15, Issue 1, pp. 141 - 150
There has been a growing need for in vitro models of neurodegenerative diseases such as Alzheimer's disease that would enable a better understanding of... 
Index Medicus | Neurological diseases | Neural networks | Chips | Interstitials | Medical services | Micropumps | Alzheimer's disease | Microfluidics | Three dimensional
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11. Full Text Erratum: “Electrical and optical properties of compositionally spread MoInSnO thin films deposited by combinatorial RF magnetron cosputtering”
by Oh, Jeung Pyo and Kim, Eun Mi and Kim, Young-Baek and Woo, Jeong Ju and Kim, Tae-Won and Heo, Gi-Seok
Japanese Journal of Applied Physics, ISSN 0021-4922, 10/2015, Volume 54, Issue 10, p. 109201
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12. Full Text Erratum: Electrical and optical properties of compositionally spread MoInSnO thin films deposited by combinatorial RF magnetron cosputtering (Japanese Journal of Applied Physics (2015) 54 (091101))
by Oh, Jeung Pyo and Kim, Eun Mi and Kim, Young-Baek and Woo, Jeong Ju and Kim, Tae-Won and Heo, Gi-Seok
Japanese Journal of Applied Physics, ISSN 0021-4922, 10/2015, Volume 54, Issue 10
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13. Full Text Meniscus induced self organization of multiple deep concave wells in a microchannel for embryoid bodies generationElectronic supplementary information (ESI) available. See DOI: 10.1039/c1lc20619b
by Jeong, Gi Seok and Jun, Yesl and Song, Ji Hoon and Shin, Soo Hyun and Lee, Sang-Hoon
ISSN 1473-0197, 12/2011, Volume 12, Issue 1, pp. 159 - 166
Embryonic stem cells (ESCs) have attracted great interest in the fields of tissue engineering, regenerative medicine, and organogenesis for their pluripotency... 
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14. Full Text A one-stop microfluidic-based lung cancer organoid culture platform for testing drug sensitivityElectronic supplementary information (ESI) available. See DOI: 10.1039/c9lc00496c
by Jung, Da Jung and Shin, Tae Hoon and Kim, Minsuh and Sung, Chang Ohk and Jang, Se Jin and Jeong, Gi Seok
ISSN 1473-0197, 8/2019, Volume 19, Issue 17, pp. 2854 - 2865
Microfluidic devices as translational research tools provide a potential alternative to animal experiments due to their ability to mimic physiological... 
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15. Full Text Sprouting Angiogenesis under a Chemical Gradient Regulated by Interactions with an Endothelial Monolayer in a Microfluidic Platform
by Jeong, Gi Seok and Han, Sewoon and Shin, Yoojin and Kwon, Gu Han and Kamm, Roger D and Lee, Sang-Hoon and Chung, Seok
Analytical Chemistry, ISSN 0003-2700, 11/2011, Volume 83, Issue 22, pp. 8454 - 8459
Microfluidic cell culture assays are versatile tools for studying cell migration, particularly angiogenesis. Such assays can deliver precisely controlled... 
CAPILLARY MORPHOGENESIS | MIGRATION | CHEMISTRY, ANALYTICAL | VEGF | DEVICE | ASSAYS | INTERSTITIAL FLOW | 3-DIMENSIONAL CELL-CULTURE | CANCER | Endothelium, Vascular - cytology | Microfluidic Analytical Techniques | Neovascularization, Physiologic - drug effects | Endothelium, Vascular - metabolism | Humans | Endothelium, Vascular - drug effects | Cell Culture Techniques | Hydrogels - chemistry | Cell culture | Usage | Analysis | Biochemical assays | Neovascularization | Research | Microfluidics
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16. A one-stop microfluidic-based lung cancer organoid culture platform for testing drug sensitivity (Electronic supplementary information (ESI) available. See DOI: 10.1039/c9lc00496c)
by Da Jung Jung and Tae Hoon Shin and Minsuh Kim and Chang Ohk Sung and Se Jin Jang and Gi Seok Jeong
Lab on a Chip, ISSN 1473-0197, 01/2019, Volume 19, Issue 17, pp. 2854 - 2865
Microfluidic devices as translational research tools provide a potential alternative to animal experiments due to their ability to mimic physiological... 
Sensitivity | Toxicity | Lung cancer | Physiology | Microfluidics | Apoptosis | System effectiveness | Anticancer properties
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17. Full Text Solderable and electroplatable flexible electronic circuit on a porous stretchable elastomer
by Jeong, Gi Seok and Baek, Dong-Hyun and Jung, Ha Chul and Song, Ji Hoon and Moon, Jin Hee and Hong, Suck Won and Kim, In Young and Lee, Sang-Hoon
Nature Communications, ISSN 2041-1723, 2012, Volume 3, Issue 1, p. 977
A variety of flexible and stretchable electronics have been reported for use in flexible electronic devices or biomedical applications. The practical and wider... 
INTERFACES | NERVOUS-SYSTEM | HIGH-CONDUCTIVITY | MULTIDISCIPLINARY SCIENCES
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18. Full Text Viscoelastic lithography for fabricating self-organizing soft micro-honeycomb structures with ultra-high aspect ratios
by Jeong, Gi Seok and No, Da Yoon and Lee, Jaeseo and Yoon, Junghyo and Chung, Seok and Lee, Sang-Hoon
Nature Communications, ISSN 2041-1723, 05/2016, Volume 7, Issue 1, p. 11269
High-aspect ratio micro-and nano-structures have been used for the production of a variety of applications. In this paper, we describe a simple and... 
BUBBLE PRESSURE METHOD | SYSTEM | HYDROGELS | SINUSOIDAL ENDOTHELIAL-CELLS | MULTIDISCIPLINARY SCIENCES | NANOTUBES | COCULTURE | SCAFFOLDS | SURFACE-TENSION | MICROFABRICATION | EMBRYOID BODIES
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19. Full Text Applications of micromixing technology
by Jeong, Gi Seok and Chung, Seok and Kim, Chang-Beom and Lee, Sang-Hoon
Analyst, ISSN 0003-2654, 2010, Volume 135, Issue 3, pp. 460 - 473
This review presents an application of micromixer technologies, which have driven a number of critical research trends over the past few decades, particularly... 
ON-A-CHIP | CHEMICAL-REACTIONS | CHEMISTRY, ANALYTICAL | MICROFLUIDIC DEVICE | PRECIPITATION | CELL-LYSIS | HIGH-THROUGHPUT | MIXER | MICRO REACTORS | RADICAL POLYMERIZATION | FLOW | Microfluidic Analytical Techniques - methods | Organic Chemicals - chemical synthesis | Magnetic Resonance Spectroscopy | Inorganic Chemicals - chemical synthesis | Organic Chemicals - chemistry | Enzyme Assays | Lab-On-A-Chip Devices | Spectroscopy, Fourier Transform Infrared | Inorganic Chemicals - chemistry | DNA - chemistry | DNA - analysis | Spectrum Analysis, Raman | Miniaturization | Proteins - chemistry
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20. A low-energy-consumption electroactive valveless hydrogel micropump for long-term biomedical applications
by Kwon, Gu Han and Jeong, Gi Seok and Park, Joong Yull and Moon, Jin Hee and Lee, Sang-Hoon
Lab On a Chip, ISSN 1473-0197, 01/2011, Volume 11, Issue 17, pp. 2910 - 2915
Stimuli-responsive hydrogels have attracted considerable interest in the field of microfluidics due to their ability to transform electrical energy directly... 
Drug delivery systems | Simulation | Pumping | Hydrogels | Pumps | Battery | Micropumps | Electric batteries
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