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International Journals

The PDF documents are for personal/educational uses only, and are subject to copyrights of the respective publishers.
 
 

Book Chapters

  • 1. T. Lee, H. W. Baac, J. G. Ok, and L. J. Guo, Chapter 14. Polymer-Nanomaterial Composites for Optoacoustic Conversion (p. 519-546), in Functional Organic and Hybrid Nanostructured Materials: Fabrication, Properties, and Applications (edited by Q. Li), online ISBN: 9783527807369, © 2018 Wiley-VCH Verlag GmbH & Co. KGaA (Apr 2018), http://doi.org/10.1002/9783527807369.ch14

 

Published as of Fall 2019 (*Corresponding)

  • 56*. D. K. Oh*, S. Lee*, S. H. Lee*, W. Lee, K.-S. Han, S. Jung, D. H. Kim, D.-Y. Lee, H. J. Park, and J. G. Ok (*equal contributions), Tailored nanopatterning by controlled continuous nanoinscribing with tunable shape, depth, and dimension, ACS Nano 13 (10), 11194-11202 (Oct 2019), http://doi.org/10.1021/acsnano.9b04221 PDF

  • 55. H. S. Kim, M. Na, J. G. Ok, G. Kim, and S.-J. Ye, Development of the hemispherical rotational modulation collimator imaging system, IEEE Transactions on Nuclear Science 66 (9), 2114-2122 (Sep 2019), http://dx.doi.org/10.1109/TNS.2019.2933442 PDF

  • 54*. J. H. Ahn*, M. Na*, S. Koo, H. Chun, I. Kim, J. W. Hur, J. H. Lee, and J. G. Ok (*equal contributions), Development of a fully automated desktop chemical vapor deposition system for programmable and controlled carbon nanotube growth, Micro and Nano Systems Letters 7, 11 (Aug 2019), http://dx.doi.org/10.1186/s40486-019-0091-8 PDF

  • 53. D. Kim, D. Yang, M. A. Lim, Z. Li, J. G. Ok*, and I. Park, Flexible toxic gas sensor by direct growth and selective surface functionalization of metal-oxide nanowires on plastic substrate, ACS Applied Materials & Interfaces11 (27), 24298-24307 (July 2019), https://pubs.acs.org/doi/10.1021/acsami.9b06951 PDF

  • 52*. D. K. Oh*, D. T. Nguyen*, S. Lee*, P. Ko, G.-S. Heo, C.-H. Yun, T.-W. Ha, H. Youn, and J. G. Ok, (*equal contribution), Facile and scalable fabrication of flexible re-attachable ionomer nanopatterns (RAINs) by continuous multidimensional nanoinscribing and low-temperature roll imprinting, ACS Applied Materials & Interfaces, 11 (12), 12070-12076 (Mar 2019), https://pubs.acs.org/doi/10.1021/acsami.8b21915 PDF

  • 51J. G. Ok*, C. R. Lee*, and M. Y. Jeong (*equal contribution), Nanopatterning on the cylindrical surface using an E-Beam pre-mapping algorithm, Journal of Micromechanics and Microengineering 29 (1), 015004 (Jan 2019), https://doi.org/10.1088/1361-6439/aaea48 PDF

  • 50*. K.-T. Lee*, H. W. Baac*, D. H. Park,J. G. Ok, and H. J. Park (*equal contribution), Enhanced optical properties of colored semitransparent ultrathin hybrid solar cells employing Fabry–Pérot etalon with a dielectric overlay, IEEE Photonics Journal 10 (6), 8400510 (Dec 2018), https://doi.org/10.1109/JPHOT.2018.2876397 PDF
     
  • 49. D. Lee, S. Y. Han, D. M. Nguyen, G. Yoon, J. Mun, J. H. Lee, J. G. Ok, H. J. Park, and J. Rho, Polarization-sensitive tunable absorber in visible and near-infrared regimes, Scientific Reports 8, 12393 (Aug 2018), https://doi.org/10.1038/s41598-018-30835-6 PDF

  • 48. H.-K. Na, J.-S. Wi, H. Y. Son, J. G. Ok, Y.-M. Huh, and T. G. Lee, Discrimination of single nucleotide mismatches using a scalable, flexible, and transparent three-dimensional nanostructure-based plasmonic miRNA sensor with high sensitivity, Biosensors and Bioelectronics 113, 39-45 (Aug 2018), https://doi.org/10.1016/j.bios.2018.04.033 PDF

  • 47J. G. Ok*, C. R. Lee*, and M. Y. Jeong (*equal contribution), Nanopatterning on the cylindrical surface using E-Beam pre-mapping algorithm, submitted to Microelectronic Engineering, ACS Photonics 5 (7), 2549-2554 (Jul 2018), http://dx.doi.org/10.1021/acsphotonics.7b01182 PDF

  • 46. J. S. Wi, D. K. Oh, M. K. Kwak, and J. G. Ok, Size-dependent detection sensitivity of spherical particles sitting on a double-bent gold strip array, Optical Materials Express 8 (7), 1774-1779 (Jul 2018), https://doi.org/10.1364/OME.8.001774 PDF

  • 45*J. G. Ok*, S. J. Park*, H. J. Park, K.-T. Lee, J. H. Lee, J. D. Kim, E. Cho, H. W. Baac, S. Kang, L. J. Guo, and A. J. Hart (*equal contribution), Modulation of the effective density and refractive index of carbon nanotube forests via nanoimprint lithography, Carbon 129, 8-14 (Apr 2018), http://dx.doi.org/10.1016/j.carbon.2017.11.079 PDF

  • 44. D. Yang, J. Lee, D. Kim, J. G. Ok, and I. Park, Flexible ultraviolet and ambient light sensor based on nanomaterial network fabricated by using selective and localized wet-chemical reactions, Langmuir 34 (14), 4132−4141 (Mar 2018), https://pubs.acs.org/doi/abs/10.1021/acs.langmuir.7b02332 PDF

  • 43*. S. Choi, Y. H. Kook, C. H. Kim, S. S. Yoo, K.-S. Park, J. Lee, C. Park, J. G. Ok, and S. Kang, Scalable fabrication of flexible multi-level nanoimprinting molds with uniform heights via a ‘top-to-bottom’ level patterning sequence, Applied Surface Science 428, 895-899 (Jan 2018), http://dx.doi.org/10.1016/j.apsusc.2017.09.172 PDF

  • 42*. M. Na*, S. Lee*, H. S. Kim, G. Kim, and J. G. Ok (*equal contributions), Development of a hemispherical rotational modulation collimator system for imaging spatial distribution of radiation sources, Journal of Instrumentation 12 (12), C12050 (Dec 2017), http://dx.doi.org/10.1088/1748-0221/12/12/C12050 PDF

  • 41. Y.-C. Chen*, H. W. Baac*, K.-T. Lee, S. Fouladdel, K. Teichert, J. G. Ok, Y.-H. Cheng, P. N. Ingram, A. J. Hart, E. Azizi, L. J. Guo, M. S. Wicha, and E. Yoon (*equal contribution), Selective photomechanical detachment and retrieval of divided sister cells from enclosed microfluidics for downstream analyses, ACS Nano 11 (5), 4660-4668 (May 2017), http://dx.doi.org/10.1021/acsnano.7b00413 PDF

  • 40*. J. H. Lee, M. Na, J. Kim, K. Yoo, J. Park, J. D. Kim, D. K. Oh, S. Lee, H. Youn, M. K. Kwak, and J. G. Ok, Rapid and Conformal Coating of Polymer Resins by Airbrushing for Continuous and High-speed roll-to-roll nanopatterning: parametric quality controls and extended applications, Nano Convergence 4 (1), 11 (May 2017), http://dx.doi.org/10.1186/s40580-017-0105-2 PDF

  • 39. S. H. Lee, S. W. Kim, C. W. Park, H. E. Jeong, J. G. Ok, and M. K. Kwak, Scalable fabrication of flexible transparent heaters comprising continuously created metallic micromesh patterns incorporated with biomimetic anti-reflection layers, International Journal of Precision Engineering and Manufacturing-Green Technology 4 (2), 177-181 (Apr 2017), http://dx.doi.org/10.1007/s40684-017-0022-1 PDF

  • 38. M. Byun, D. Lee, M. Kim, Y. Kim, K. Kim, J. G. Ok, J. Rho, and H. Lee, Demonstration of nanoimprinted hyperlens array for high-throughput sub-diffraction imaging, Scientific Reports 7, 46314 (Apr 2017), http://dx.doi.org/10.1038/srep46314 PDF

  • 37*. J. Lee, J. Y. Kim, J. H. Choi, J. G. Ok, and M. K. Kwak, Scalable fabrication of flexible microstencils by using sequentially induced dewetting phenomenon, ACS Omega 2 (3), 1097-1103 (Mar 2017),
    http://dx.doi.org/10.1021/acsomega.7b00070 PDF

  • 36*. J.-S. Wi, S. Lee, S. H. Lee, D. K. Oh, K.-T. Lee, I. Park, M. K. Kwak, and J. G. Ok, Facile three-dimensional nanoarchitecturing of double-bent gold strips on Roll-to-Roll nanoimprinted transparent nanogratings for flexible and scalable plasmonic sensors, Nanoscale 9 (4), 1398-1402 (Jan 2017),
    http://dx.doi.org/10.1039/C6NR08387K PDF

  • 35*. S. Koo*, S. H. Lee*, J. D. Kim, J. G. Hong, H. W. Baac, M. K. Kwak, and J. G. Ok (*equal contributions), Controlled airbrush coating of polymer resists in Roll-to-Roll nanoimprinting with regimented residual layer thickness, International Journal of Precision Engineering and Manufacturing 17 (7), 943-947 (Jul 2016), http://dx.doi.org/10.1007/s12541-016-0115-8 PDF

  • 34. C. Zhang, H. Subbaraman, Q. Li, Z. Pan, J. G. Ok, T. Ling, C.-J. Chung, X. Zhang, X. Lin, R. T. Chen, and L. J. Guo, Printed Photonic Elements: Nanoimprinting and Beyond, Journal of Materials Chemistry C 4 (23), 5133-5153 (Jun 2016), http://dx.doi.org/10.1039/C6TC01237J PDF

  • 33. T. Lee, J. G. Ok, L. J. Guo, and H. W. Baac, Low f-number photoacoustic lens for tight ultrasonic focusing and free-field micro-cavitation in water, Applied Physics Letters 108 (10), 104102 (Mar 2016), http://dx.doi.org/10.1063/1.4943369 PDF

  • 32. J. G. Ok, Y. J. Shin, H. J. Park, and L. J. Guo, Feature Article (Invited Review): A step toward next-generation nanoimprint lithography: extending productivity and applicability, Applied Physics A 121 (2), 343-356 (Nov 2015), http://dx.doi.org/10.1007/s00339-015-9229-6 PDF

  • 31. H. W. Baac, J. G. Ok, T. Lee, and L. J. Guo, Nano-structural characteristics of carbon nanotube-polymer composite films for high-amplitude optoacoustic generation, Nanoscale, 7 (34), 14460-14468 (Sep 2015), http://dx.doi.org/10.1039/C5NR03769G PDF
     
  • 30. T. Lee, H. W. Baac, J. G. Ok, H. S. Youn, and L. J. Guo, Nozzle-free liquid microjetting via homogeneous bubble nucleation, Physical Review Applied 3 (4), 044007 (Apr 2015), http://dx.doi.org/10.1103/PhysRevApplied.3.044007 PDF
     
  • 29J. G. Ok*, M. K. Kwak*, S. H. Lee, and L. J. Guo (*equal contributions), Visually Tolerable Tiling (VTT) for making large-area flexible patterned surface, Materials Horizons 2 (1), 86-90 (Jan 2015), http://dx.doi.org/10.1039/C4MH00159A PDF
     
  • 28. J. G. Ok, A. Panday, T. Lee, and L. J. Guo, Continuous fabrication of scalable 2-dimensional (2D) micro- and nanostructures by sequential 1D mechanical patterning processes, Nanoscale 6 (24), 14636-14642 (Dec 2014), http://dx.doi.org/10.1039/C4NR05567E PDF
     
  • 27. T. Lee, H. W. Baac, J. G. Ok, H. S. Youn, and L. J. Guo, Controlled generation of single microbubble at solid surfaces by a nanosecond pressure pulse, Physical Review Applied 2 (2), 024007 (Aug 2014), http://dx.doi.org/10.1103/PhysRevApplied.2.024007 PDF
     
  • 26. S.-L. Chen, Y.-C. Chang, C. Zhang, J. G. Ok, T. Ling, M. T. Mihnev, T. B. Norris, and L. J. Guo, Efficient real-time detection of terahertz pulse radiation based on photoacoustic conversion by carbon nanotube nanocomposite, Nature Photonics 8, 537-542 (May 2014), http://dx.doi.org/10.1038/nphoton.2014.96 PDF
     
  • 25. J. G. Ok, J. Y. Lee, H. W. Baac, S. H. Tawfick, L. J. Guo, and A. J. Hart, Rapid anisotropic photoconductive response of ZnO-coated aligned carbon nanotube sheets, ACS Applied Materials & Interfaces 6 (2), 874-881 (Jan 2014), http://dx.doi.org/10.1021/am404131r PDF
     
  • 24. J. G. Ok*, M. K. Kwak*, C. M. Huard, H. S. Youn, and L. J. Guo (*equal contributions), Photo Roll Lithography (PRL) for continuous and scalable patterning with application in flexible electronics, Advanced Materials 25 (45), 6554-6561 (Dec 2013), http://dx.doi.org/10.1002/adma.201303514 PDF
     
  • 23. H. W. Baac, T. Lee, J. G. Ok, T. Hall, and L. J. Guo, Dual-frequency focused ultrasound using optoacoustic and piezoelectric transmitters for single-pulsed free-field cavitation in water, Applied Physics Letters 103 (23), 234103 (Dec 2013), http://dx.doi.org/10.1063/1.4836315 PDF
     
  • 22. H. W. Baac, J. Frampton, J. G. Ok, S. Takayama, and L. J. Guo, Localized micro-scale disruption of cells using laser-generated focused ultrasound, Journal of Biophotonics 6 (11-12), 905-910 (Dec 2013), http://dx.doi.org/10.1002/jbio.201200247 PDF
     
  • 21. Y. J. Shin, Y.-K. Wu, K.-T. Lee, J. G. Ok, and L. J. Guo, Fabrication and encapsulation of a short- period wire grid polarizer with improved viewing angle by the angled-evaporation method, Advanced Optical Materials 1 (11), 863-868 (Nov 2013), http://dx.doi.org/10.1002/adom.201300276 PDF
     
  • 20J. G. Ok*, S. H. Ahn*, M. K. Kwak, K.-T. Lee, J. Y. Lee, and L. J. Guo (*equal contributions), Template-free Vibrational Indentation Patterning (VIP) of micro/nano-scale grating structures with real-time pitch and angle tunability, Advanced Functional Materials 23 (37), 4739-4744 (Oct 2013), http://dx.doi.org/10.1002/adfm.201300293 PDF
     
  • 19. J. G. Ok, S. H. Ahn, M. K. Kwak, and L. J. Guo, Feature Article (Invited Review): Continuous and high-throughput nanopatterning methodologies based on mechanical deformation, Journal of Materials Chemistry C 1 (46), 7681-7691 (Jul 2013), http://dx.doi.org/10.1039/c3tc30908h;
    Selected as a Hot Article for 2013: http://rsc.li/1eSrGQQ PDF
     
  • 18. H. W. Baac, J. G. Ok, A. Maxwell, K.-T. Lee, Y.-C. Chen, A. J. Hart, Z. Xu, E. Yoon, and L. J. Guo, Carbon-nanotube optoacoustic lens for focused ultrasound generation and high-precision targeted therapy, Scientific Reports 2, 989 (Dec 2012), http://dx.doi.org/10.1038/srep00989 PDF
     
  • 17J. G. Ok, H. S. Youn, M. K. Kwak, K.-T. Lee, Y. J. Shin, A. Greenwald, Y. Liu, and L. J. Guo, Continuous and scalable fabrication of flexible metamaterial films via Roll-to-Roll nanoimprint process for broadband plasmonic infrared filters, Applied Physics Letters 101 (22), 223102 (Nov 2012), http://dx.doi.org/10.1063/1.4767995 PDF
     
  • 16. Y. J. Shin, C. Pina-Hernandez, Y.-K. Wu, J. G. Ok, and L. J. Guo, Facile route of flexible wire grid polarizer fabrication by angled-evaporations of aluminum on two sidewalls of an imprinted nanograting, Nanotechnology 23 (34), 344018 (Aug 2012), http://dx.doi.org/10.1088/0957-4484/23/34/344018 PDF
     
  • 15. M. K. Kwak, J. G. Ok, J. Y. Lee, and L. J. Guo, Continuous phase-shift lithography with a roll-type mask and application to transparent conductor fabrication, Nanotechnology 23 (34), 344008 (Aug 2012), http://dx.doi.org/10.1088/0957-4484/23/34/344008 PDF
     
  • 14. J. W. Park, D. K. Chung, B. H. Kim, J. G. Ok, W. J. Kim, Y. H. Kim, and C. N. Chu, Wire electrical discharge machining of carbon nanofiber mats for field emission, International Journal of Precision Engineering and Manufacturing 13 (4), 593-599 (Apr 2012), http://dx.doi.org/10.1007/s12541-012-0076-5 PDF
     
  • 13. H. Shi, J. G. Ok, H. W. Baac, and L. J. Guo, Low density carbon nanotube forest as an index-matched and near perfect absorption coating, Applied Physics Letters 99 (21), 211103 (Nov 2011), http://dx.doi.org/10.1063/1.3663873 PDF
     
  • 12. T. Xu, H. Shi, Y.-K. Wu, A. F. Kaplan, J. G. Ok, and L. J. Guo, Structural colors: From plasmonic to carbon nanostructures, Small 7 (22), 3128-3136 (Nov 2011), http://dx.doi.org/10.1002/smll.201101068 PDF
     
  • 11. J. G. Ok, H. J. Park, M. K. Kwak, C. A. Pina-Hernandez, S. H. Ahn, and L. J. Guo, Continuous patterning of nanogratings by nanochannel-guided lithography on liquid resists, Advanced Materials 23 (38), 4444-4448 (Oct 2011), http://dx.doi.org/10.1002/adma.201102199 PDF
     
  • 10. J. Li, S. Srivastava, J. G. Ok, Y. Zhang, M. Bedewy, N. A. Kotov, and A. J. Hart, Multidirectional hierarchical nanocomposites made by carbon nanotube growth within Layer-By-Layer-assembled films, Chemistry of Materials 23 (4), 1023-1031 (Feb 2011), http://dx.doi.org/10.1021/cm1030443 PDF
     
  • 9. H. W. Baac, J. G. Ok, H. J. Park, T. Ling, S.-L. Chen, A. J. Hart, and L. J. Guo, Carbon nanotube composite optoacoustic transmitters for strong and high frequency ultrasound generation, Applied Physics Letters 97 (23), 234104 (Dec 2010), http://dx.doi.org/10.1063/1.3522833 PDF
     
  • 8. J. G. Ok, S. H. Tawfick, K. A. Juggernauth, K. Sun, Y. Zhang, and A. J. Hart, Electrically addressable hybrid architectures of zinc oxide nanowires grown on aligned carbon nanotubes, Advanced Functional Materials 20 (15), 2470 -2480 (Aug 2010), http://dx.doi.org/10.1002/adfm.201000249;
    Frontispiece: http://dx.doi.org/10.1002/adfm.201090067 PDF
     
  • 7. W. Y. Sung, S. M. Lee, W. J. Kim, J. G. Ok, H. Y. Lee, and Y. H. Kim, New approach to enhance adhesions between carbon nanotube emitters and substrate, Diamond and Related Materials 17 (6), 1003-1007 (Jun 2008), http://dx.doi.org/10.1016/j.diamond.2008.03.001 PDF
     
  • 6. S. M. Lee, W. Y. Sung, W. J. Kim, J. G. Ok, and Y. H. Kim, Fabrication of field emitters with carbon nanotubes using triboelectricity, Japanese Journal of Applied Physics 47 (4), 2339-2341 (Apr 2008), http://dx.doi.org/10.1143/JJAP.47.2339 PDF
     
  • 5. J. G. Ok, B. H. Kim, D. K. Chung, W. Y. Sung, S. M. Lee, S. W. Lee, W. J. Kim, J. W. Park, C. N. Chu, and Y. H. Kim, Electrical discharge machining of carbon nanomaterials in air: machining characteristics and the advanced field emission applications, Journal of Micromechanics and Microengineering 18 (2), 025007 (Feb 2008), http://dx.doi.org/10.1088/0960-1317/18/2/025007 PDF
     
  • 4. B. H. Kim, J. G. Ok, Y. H. Kim, and C. N. Chu, Electrical discharge machining of carbon nanofiber for uniform field emission, CIRP Annals 2007 56 (1), 233-236 (Dec 2007), http://dx.doi.org/10.1016/j.cirp.2007.05.055 PDF
     
  • 3. W. Y. Sung, J. G. Ok, W. J. Kim, S. M. Lee, E. Y. Jang, and Y. H. Kim, Fabrication and the enhanced emission uniformity of carbon nanofibers using a glass cap, Nanotechnology 18 (33), 335705 (Aug 2007), http://dx.doi.org/10.1088/0957-4484/18/33/335705 PDF
     
  • 2. W. Y. Sung, J. G. Ok, W. J. Kim, S. M. Lee, S. C. Yeon, H. Y. Lee, and Y. H. Kim, Synthesis and field emission characteristics of carbon nanocoils with a high aspect ratio supported by copper micro-tips, Nanotechnology 18 (24), 245603 (Jun 2007), http://dx.doi.org/10.1088/0957-4484/18/24/245603 PDF
     
  • 1. J. G. Ok, B. H. Kim, W. Y. Sung, C. N. Chu, and Y. H. Kim, Uniformity enhancement of carbon nanofiber emitters via electrical discharge machining, Applied Physics Letters 90 (3), 033117 (Jan 2007), http://dx.doi.org/10.1063/1.2432239 PDF