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SUNGHO JIN Distinguished Professor and Iwama Endowed Professor of Materials Science Department of Mechanical & Aerospace Engineering (with joint appointment with Nanoengineering Dept.) Director, UCSD Materials Science & Engineering Program
Also, Life-time Faculty Member, Center for Magnetic Recording Research (CMRR)
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Address
(T) 858-534-4903, (F) 858-534-5698, (Website) http://maeweb.ucsd.edu/~jin/
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1) Nano Materials and Device Applications -- Carbon nanotubes, nanoparticles, and nano-fabrication of aligned or patterned nanostructures with controlled geometry, synthesis of nanocomposite structures, ultra-sharp nanoprobes, electron field emission, e-beam lithography, and nano imprint lithography.
2) Magnetic Materials and Applications – Creation of ultra-high-density magnetic recording media, study of highly magnetoresistive materials, new magnetic read/write structures.
3) Bio Materials and Influence on Cell Behavior and Nanomedicine -- Functional or maneuverable biomaterials such as magnetic nanoparticles, quantum dots, conjugated nanocomposites, nano-bio materials, bio-imageable nanostructures, implant materials, probes for bio-conductance measurements, modifications of cell behavior, growth characteristics, and study of nanototoxicity under nanoparticle environment, drug delivery nano-bio materials.
4) Materials and structures for fuel cells, battery electrodes, solar energy materials – Large surface-area, highly efficient catalyst nanostructures, membrane materials, high-capacity electrode materials, thermoelectric materials.
Prof. Jin’s group effort also covers research on various other electronic,optical, superconducting, microwave, and MEMS materials/devices. The aim is to contribute to the advancement of science and education, as well as to the applied research for electronics, biomedical engineering, energy/environment and telecom technologies.
--- Controlled-geometry growth of aligned carbon nanotubes
--- For unique configurations, measurement and understanding of nanomaterials physical properties (electron field emission, conductance, elastic/plastic behavior, surface functionalization/conjugation).
--- For potential applications in nano electronics and field emission devices.
--- For development of nano-fabrication techniques such as electron
projection lithography and nano imprint lithography (NIL).
--- For nano-imaging techniques such as advanced AFM probes.
--- For ultra-high-density magnetic recording media.
--- Magnetic read/write head, low-field sensing with highly magnetoresistive
and other sensor materials.
--- Supercritical CO2 deposition of nanomaterials; Anisotropic composite materials; Sensor/actuator materials.
Student/Postdoc recognitions
-- Joseph Aubuchon – Materials Research Society (MRS) Gold Medal (2005 Spring Mtg) in the “Best Graduate Student” contest. [Currently a staff scientist at Applied Materials, CA].
-- Chiara Daraio –MRS Gold Medal (2005 Fall Mtg) in the “Best Graduate Student” contest. [Currently a faculty member at CalTech].
-- Brian Oh – One of the selected “Stem Cell Postdoctoral Trainee Grant” awardees, 2006, California Institute Regenerative Medicine (CIRM).
-- Karla Brammer – 2007 ARCS Foundation scholarship (Achievement Rewards for College Scientists)

Photo taken in June 2006 at the La Jolla beach, celebrating successful Ph.D. thesis defense of Joseph Aubuchon and Chiara Daraio.
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Ph.D. |
Materials Science (1974), University of California, Berkeley
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M.S. |
Physical Metallurgy (1971), University of California, Berkeley
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B.S. |
Metallurgical Engineering (1969), Seoul National University, Seoul, Korea |
· July 2006 – present: Distinguished Professor, UCSD
· July 2004 – present: Life-time faculty member, Center for Magnetic Recording Research (CMRR) at UCSD
· January 2003 – present: Director, UCSD Materials Science & Engineering Program
· July 2002 – present : Professor of Materials Science and Endowed Chair, Department of Mechanical and Aerospace Engineering, University of California at San Diego.
· May 1981 – June 2002: Bell Labs (Lucent Technologies/Agere Systems) at Murray Hill, NJ.
Technical Manager of Applied Materials and Metallurgy Research Group.
· July 1976 - May 1981: Bell Labs at Murray Hill, NJ. Member of Technical Staff.
· July 1974 - June, 1976: Lawrence Berkeley Laboratory, University of California, Berkeley. Research Scientist.
Contributed to the advancement of science and technology with world-class, trend-setting research in the fields of electronic, magnetic, optical, superconducting, electronic packaging, and MEMS materials and devices, and nano-bio materials. The pioneering and leadership nature of my work is evident by a large number of Science Citation Index (~10,000), US Patents (~200 issued or pending), publications (~280), and invited or keynote talks (~115) at major professional societies.
1. Discovered (and named) Colossal Magneto-Resistance (CMR) phenomenon in perovskite La-Ca-Mn-O thin films in 1994. My publications in Science [with ~3000 citations, 4th highest cited paper in the physical science field during the past decade], JAP, APL and the invited talk at the Magnetism and Magnetic Materials Conference touched upon the imagination of many people, and immensely stimulated world-wide research in this field. Very large change in electrical resistivity by more than four orders of magnitude was obtained. The fact that electrical resistivity of a material can be manipulated by applied field to change by orders of magnitude (and the corresponding variability in Ohm’s law relationship) could be useful, if the CMR materials are properly developed, for a variety of electrical and magnetic devices including ultra-high-density, hard-disk recording heads, future spintronics devices.
2. Developed ductile permanent magnet alloys of Fe-Cr-Co (chromindur) based on spinodal decomposition for reliable and miniaturized telephone receiver applications. As many as 10 million cup-shaped magnets per year have been manufactured and used in-high quality AT&T telephones since early 1980s, with a total economic impact (savings) of over $200M (equilvalent to ~$ 1 billion in today’s dollar value).
3. In response to the worldwide cobalt supply crisis in early 1980’s, I developed a series of cobalt-free, square-loop semi-hard magnet materials including Fe-20Ni-4Mo and Fe-8Mn alloys. They are now widely used in billions/year of anti-theft security tags for electronic surveillance in various retail stores.
4. Developed voltage-pulse-generating magnetic wires (remotely actuate-able by external magnetic field) for possible implantation for functional electrical stimulations of neurons, accelerated bone healing, remote pacemakers, and other biomedical applications.
5. Designed new, optically transparent (~98%) yet electrically conductive polymer-metal particle composite structure with z-direction-only anisotropic conductivity using vertically alignment of chain of ferromagnetic metal particles (Published in Science). The structure can be useful for touch-sensitive screens and other optical applications. The anisotropic conductivity can be useful for solderless electronic interconnections, non-invasive circuit tests for commercial high-frequency IC products, and potentially for tactile sensor skins for robotic or bio applications.
6. Designed and demonstrated magnetically tunable optical fiber grating device which allows latchable reconfiguration of Bragg filtering wavelength for potential wavelength division multiplxed (WDM) optical telecom systems.
7. Contributed to Lucent’s exciting optical MEMS program (involving 100+ scientists) with valuable work of enabling the stability and performance of light-reflecting mirrors. World’s largest and fastest telecommunication optical switching systems using the free-space optical MEMS has been demonstrated by Lucent at the Yr 2001 OFC Conference (Optical Fiber Conference), the capacity of which would allow the switching of today’s whole day internet traffic in less than a second if needed.
8. Demonstrated, for the first time, and within a month after the announcement of the 90K superconductor, the feasibility of high Tc superconductor(HTSC) wires from the mechanically brittle ceramic superconductors was demonstrated through the study of diffusional interactions between various metals and the reactive high Tc materials, and through fabrication of silver clad superconductor wires. This silver-clad approach was widely used by many researchers and industries in US, Japan, and Europe (IGC, American Superconductors, Sumitomo, etc.) for fabrication of Bi-Sr-Ca-Cu-O and Tl-Ba-Ca-Cu-O based high Tc superconductor wires and prototype/demonstration superconducting magnets with ~2 Tesla generated field. I have been awarded several broad patents on HTSC wires covering cuprate superconductors.
9. Pioneered (and named) the Melt-Textured-Growth processing for HTSC and demonstrated for the first time that the grain boundary weak link problem in bulk high Tc superconductors can be overcome and high critical current density can be obtained. The principle of partial melt processing for grain alignment is now employed by world-wide researchers in order to achieve high critical currents (Jc) in Y-Ba-Cu-O, Bi-Sr-Ca-Cu-O, and Tl-Ba-Ca-Cu-O bulk superconductors and wires, and led to commercial applications such as efficient and sharp, telecommunication frequency filters for Bell Atlantic, Ameritech, and other companies.
For the leadership quality R&D in the superconductor field I received the “1990 Person of the Year” award from Superconductor Week which selected one person with greatest contributions per year from more than 1200 physicists, chemists materials scientists, and electrical engineers then actively engaged in high Tc research. I was also selected as one of the Top Ten Innovative Scientists in U.S. (in the collective field of biology, chemistry, physics and electrical engineering) by Business Week magazine (August 14, 1989), and was featured in the centerfold photograph in Life magazine (September 1987).
10. Initiated the trend and displayed leadership in advocating and promoting R&D in early 1990’s on the environmentally safe electronic solders, especially Lead-Free Solders. (Europe and Japan are leading the effort to ban the use of lead-containing solders in coming years in electronic/consumer devices, with “cradle-to-grave-responsibility” type environment policy legislations for manufacturers and imported products). I organized the first eight “Lead-Free Solder” symposia for the metallurgical society meetings (1993-1997), and firmly established TMS as the leading society for discussing and advancing Pb-free solder science and technology. Edited a Special Topics Series on lead-free solders for JOM (The Journal of the Minerals, Metals and Materials, July 1993). Developed a series of new lead-free solder alloys with superior properties such as Universal Solders, using unique alloy design approaches.
11. Discovered a new diamond processing technique using diffusional thinning, polishing and shaping of diamond by molten rare earth metals. While diamond has the highest thermal conductivity of all known materials and provides exciting thermal management possibilities in modern electronic and optoelectronic designs, it is the hardest material known to mankind and the conventional mechanical polishing and shaping (usually against diamond) is time-consuming and costly, sometimes accounting for as much as one-half of CVD diamond cost. The new technique is fast and, unlike the conventional method, allows simultaneous processing of thousands of diamond pieces or wafers. The significance of this work was recognized by publications in the journal Nature, etc., and its coverage by BBC radio in 1994 Science-in-Action program.
12. Pioneered the desirable iron-clad superconductor wire structure for the newly discovered MgB2 superconductors, and demonstrated for the first time that the volatility problem associated with the presence of magnesium can be overcome and promising superconductor characteristics and configurations can be obtained. This work was published in Nature in May, 2001, and covered by New York Times, Financial Times, and various news media.
13. Demonstrated new, on-chip MEMS vacuum microtriode device by combining the world of nano with that of MEMS. Carbon nanotube cold cathode was utilized to construct a miniature triode field emission device for microwave power amplifier applications. The pioneering nature of this work was recognized and covered by news media and respectable science magazines/journals including Physics Today (July 2002, www.physicstoday.org ), MRS News (July 23, 2002), Nature (Materials Update, May 2002, www.nature.com/Physics ).
14. Demonstrated for the first time that sharply bent (zig-zag or 90o bent) carbon nanotubes can be fabricated using inhomogeneous electric field distribution during CVD growth.(Published in Nano Letters 2004) As compared to the generally straight nanowires, such bent nanotubes have far more utility, e.g., as route-able in-plane circuit nanoconductors, zig-zag nanotubes for stress-accomodating vertical interconnects, bent-tip AFM nanoprobes for sidewall metrology, and other potential applications such as nanosolenoids. Ultra-sharp AFM probe tips as small as 1 nm tip diameter has also been demonstrated for accurate imaging of nanostructures and devices, and ultra-soft-caltilevered AFM probes (~1/000 elastic modulus of standard AFM probe) with high aspect ration carbon nanotube tips have been demonstrated for imaging of soft matters such as living cells, soft polymers, and delicate nanodevices.
15. Discovered that vertically aligned and well-adhered TiO2 nanotubes on Ti implant metal surface significantly increases the formation of hydroxyapatite and bone growth. It is demonstrated that the kinetics of osteoblast cell adhesion/growth is accelerated by 300-400% on the nanoscale, topologically configured surface of the nanotubes (published in J. Biomed. Mater. Res. 2006), and the mobility of endothelial cells are much enhanced (published in Nano Lett. 2008).
16. Discovered novel electronic switching behavior and logic in CVD synthesized carbon
nanotube Y-junctions.(Nature Materials, 2005). This is the first time that such an
abrupt electrical switching behavior from “on” to “off” state has been achieved in
CNT Y-junctions. Prior to this work, only a diode like behavior was observed. This
ready-made, three-way, nano-sized transistor device represents an entirely new class
of nanoelectronic architecture and functionality, extending well beyond conventional
field effect transistor technologies, making the overall nanotube based nanoelectronic
architecture more complete and feasible.
17. Contributed to the design of dual-elastic-modulus composite materials, and discovery of strongly nonlinear acoustic materials with exciting “energy trapping and shock wave disintegration” characteristics (Phys. Rev. Lett., 2006). A shock wave impulse can be made to be confined at the soft-hard modulus interface of chain of spheres, which then allows the trapped shock energy to be slowly released in the form of weak, separated pulses over an extended period of time. Such control of acoustic waves can be useful for powerful shock mitigation, sound absorption, drastic compression/decomposition/focusing of acoustic signals for signal scrambling, and more accurate acoustic therapeutics for brain tumors and other medical disorders.
· Member of the United States National Academy of Enginering (elected in 1999).
· John Bardeen Award from TMS (The Metals, Minerals and Materials Society), 2007 for outstanding contributions to the electronic materials. (2007).
· One of the recipients of the Nano 50 Awards (2005) which honors top 50 nanotech technologists in US.
· Inaugural MRS Fellow (2008).
· Elected to the rank of TMS Fellows (The Metals, Minerals and Materials Society), 2000. (the maximum number of living Fellows limited to 100).
· Fellow of American Physical Society, 2003.
· Fellow of ASM (American Society for Metals) International, 1994.
· Received Ho-Am Engineering Award from Ho-Am Foundation in Korea, 2000 (the most prominent honor in Korea in science and technology).
· 1990 Superconductor Week “Person of the Year Award”.
· Received 1998 “Outstanding SRC (Semiconductor Research Corp.) Mentor of the Year Award”.
· Recognized by the ISI (Institute for Scientific Information) as “ISI’s 1120 Most Cited Physicists in the World” (for the period of 1981 – 1997) with the rank of 392th out of 1120 best physical science researchers.
· Editor, Acta Materialia (January 2007 - now)
· Associate Editor, Materials Science & Engineering B.
· Principal Editor, Journal of Materials Research (1998 – 2005).
· Guest Editor for JOM Special Topics Series on Lead-Free Solders: A challenge and Opportunity (July 1993), Recent Advances in Electrically Conductive Materials (March 1997), Advances in Thermal Management Materials (June 1998).
· Editor of the eleven-chapter book, “Processing and Properties of High Tc Superconductors”, 1993.
· Editor for Electronic Packaging, New Encyclopedia of Materials Science and Technology (1999).
· TMS Board of Directors member, and Division Chair (for Yr. 2002-2004) for TMS Electronic, Magnetic, Photonic Materials Division Council, overseeing ~7 technical committees. Served as Committee Chair (1999-2002) for TMS Electronic Packaging and Interconnection Materials Committee.
· Meeting Chair, Materials Research Society Fall Meeting, 2000, overseeing the organization and running of 41 Symposia with ~4500 participants.
· Organized the first eight TMS Mtg. Symposia on “Lead-Free Solders and Soldering Technologies” (1993-2000) and Microelectronics Packaging, two TMS Symposia on Conductive Materials (1995, 1997), on Optical and MEMS Packaging (March, 2003), and two MRS-related symposia on High Tc Superconductors (1990, 1992).
and Electronic Devices”, J. Electronic Materials 31(11), 1160 (2002).
Daraio, and Sungho Jin, “Multiple Sharp Bending of Carbon Nanotubes during
Growth to Produce Zig-Zag Morphology”, Nano Lett. 4, 1781 (2004).
30. C. Daraio, V. Nesterenko, J. F. Aubuchon, and S. Jin, “Dynamic Nano-
Fragmentation of Carbon Nanotubes”, Nano Lett. 4,1915 (2004).
31. L.H. Chen, J. F. AuBuchon, A. Gapin, C. Daraio, P. Bandaru, S. Jin, D. W. Kim,
and I. K. Yoo, and, C. M. Wang, “Control of Carbon Nanotube Morphology by
Change of Applied Bias Field During Growth”, Appl. Phys. Lett. 85, 5373 (2004).
32. C. Daraio, V. F. Nesterenko, S. Jin, “Highly Nonlinear Contact Interaction and
Dynamic Energy Dissipation by Forest of Carbon Nanotubes”, Appl. Phys. Lett.
85 , 5724 (2004).
33. X. R. Ye, S. Jin, J. Talbot, Y. Lin and C. M. Wai, “Supercritical Fluid
Attachment of Palladium Nanoparticles on Aligned Carbon Nanotubes”, J.
Nanosci. & Nanotech. 5, 964-969 (2005).
34. Joseph F. AuBuchon, Li-Han Chen, and Sungho Jin, “Control of Carbon
Capping for Regrowth of Aligned Carbon Nanotubes”, J. Phys. Chem. B109, 6044-6048 (2005).
35. C. Daraio, V. Nesterenko, E. Herbold, and S. Jin, “Strongly Nonlinear Waves in
a Chain of Teflon Beads”, Physical Review E72, 016603 (2005)..
36. P.R. Bandaru, C. Daraio, S. Jin, and A.M. Rao, “ Electrical Switching Behavior
and Logic in Carbon Nanotube Y-junctions”, Nature Materials 4, 663-666
(2005).
37. Joseph F. AuBuchon, Li-Han Chen, Chiara Daraio, Andrew Gapin, Sungho Jin,
“Multibranching Carbon Nanotubes via Self-Seeded Nanocatalysts” Nano
Letters 6(2), 324-328 (2006).
38. Smita Pathak, Elizabeth Cao, Marie C. Davidson, Sungho Jin, and Gabriel A.
Silva, “Quantum Dot Applications to Neuroscience: New Tools for Probing
Neurons and Glia”, The Journal of Neuroscience, 26(7), 1893–1895 (2006).
39. Joseph F. AuBuchon, Chiara Daraio, Li-Han Chen, Andrew I. Gapin, Sungho Jin,
"Iron Silicide Root Formation in Carbon Nanotubes Grown by Microwave
PECVD", J. Phys. Chem. B 109, 24215-24219 (2005).
40. “Room Temperature Solvent-Free Synthesis of Monodisperse Magnetite
nanocrystals”, X. R. Ye, C. Daraio, C. Wang, J. B. Talbot, and S. Jin, J. Nanosci.
and Nanotechnol. 6, 852–856 (2006).
41. V. F. Nesterenko, C. Daraio, E. B. Herbold, and S. Jin, “Anomalous Wave
Reflection at the Interface of Two Strongly Nonlinear Granular Media”, Phys.
Rev. Lett. 95, 158702 (2005).
42. C. Daraio, V. F. Nesterenko, E. B. Herbold, and S. Jin, “Energy Trapping and
Shock Disintegration in a Composite Granular Medium”, Phys. Rev. Lett. 96,
058002 (2006).
43. A. I. Gapin, X. R. Ye, J. F. Aubuchon, L. H. Chen, Y. J. Tang, and S. Jin, “CoPt
patterned media in anodized aluminum oxide templates”, J. Appl. Phys. 99,
08G902 (2006).
44. I-Chen Chen, Li-Han Chen, Xiang-Rong Ye, Chiara Daraio, Sungho Jin,
Christine A. Orme, Arjan Quist and Ratnesh Lal, “Extremely sharp carbon
nanocone probes for atomic force microscopy imaging”, Appl. Phys. Lett. 88,
153102 (2006).
45. Seunghan Oh, Chiara Daraio, Li-Han Chen, Thomas R. Pisanic and Sungho Jin,
“Significantly Accelerated Osteoblast Cell Growth on Aligned TiO2 Nanotubes”
J. Biomed. Mater. Res. 78A, 97-103 (2006).
46. X. R. Ye, L. H. Chen, C. Wang, J. F. Aubuchon, I. C. Chen, A. I. Gapin, J. B.
Talbot, and S. Jin, “Electrochemical Modification of Vertically Aligned Carbon
Nanotube Arrays” J. Phys. Chem. B 110, 12938-12942 (2006).
47. Joseph F. AuBuchon, Li-Han Chen, Andrew I. Gapin, Sungho Jin, "Electric-
Field-Guided Growth of Carbon Nanotubes during DC Plasma-Enhanced CVD",
Chemical Vapor Deposition 12 (6), 370-374 (2006).
48. I-Chen Chen, Li-Han Chen, Christine Orme, Arjan Quist, Ratnesh Lal and
Sungho Jin, “Fabrication of high-aspect-ratio carbon nanocone probes by
electron beam induced deposition patterning”, Nanotechnology 17, 4322–4326
(2006).
49. Thomas R. Pisanic, Jennifer D. Blackwell, Veronica I. Shubayev, Rita R.
Finones, Sungho Jin, “Nanotoxicity of iron oxide nanoparticle internalization in
growing neurons”, Biomaterials 28, 2572–2581 (2007).
50. Andrew I. Gapin, Xiang-Rong Ye, Li-Han Chen, Daehoon Hong, and Sungho Jin,
“Patterned Media Based on Soft/Hard Composite Nanowire Array of Ni/CoPt”,
IEEE Trans. Magn. 43(6), 2151 (2007).
51. I-C. Chen, L. H. Chen,C.A. Orme, S. Jin, “Control of Curvature in Highly
Compliant Probe Cantilevers during Carbon Nanotube Growth”, Nano Lett. 7(10),
3035-3040 (2007).
52. Karla S. Brammer, Seunghan Oh, John O. Gallagher, and Sungho Jin, “Enhanced
Cellular Mobility guided by TiO2 Nanotube Surfaces”, Nano Lett. 8(3), 786–793
(2008).
53. Veronica I. Shubayev, Thomas R. Pisanic, and Sungho Jin, “Magnetic iron oxide
nanoparticles for theradiagnostics”, Advanced Drug Delivery Reviews (Invited
review article, in press).
For more details of research activities in the Jin group, Click Here.