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Jan Obrzut

Research Interests:
Carbon allotrope electronic materials, Polymer networks with nanoscale objects. Microwave Measurement and Characterization Techniques, Metrology and characterization of high-k dielectrics. Dielectric relaxation. Non-linear optical polymers.


Professional Affiliations:
  • American Physical Society.
  • IEEE Instrumentation and Measurement Society.

Professional Activities:

  • Chair, IPC D-54 Test Method Subcommittee for Embedded Electronic Materials & Devices, Association Connecting Electronic Industries (IPC).
  • Co-Chair, National Roadmap for Organic and Printed Electronics, International Electronic Manufacturing Initiative (iNEMI ).

Standards:

Patents:

  • US Patent 7,070,909, “UV absorbing glass cloth and use thereof” (2006).
  • US Patent 6,838,400, “UV absorbing glass cloth” (2005).
  • US Patent 6,207,595, “ Laminate and method of manufacture thereof” (2001).
  • US Patent 6,191,952, “Compliant surface layer for flip-chip electronic packages and method for forming same” (2001). 
  • US patent 5,786,700, “Method for determining interconnection resistanc” (1998).

Awards:

  • 2007 IPC Distinguished Committee Service Award in recognition for contribution to the IPC Standard 6017 "Qualification and Performance Specification for Embedded Passive Printed Boards" (02/07).
  • 2006 NIST Bronze Medal for Excellence in Federal Service.
  • 2006 IPC Distinguished Committee Service Award in recognition for contribution to the IPC Standard 4821 "Specification for Embedded Passive Capacitance Materials" (11/06).
Selected Publications
  • Structural Stability of Transparent Conducting Films Assembled from Length Purified Single-Wall Carbon Nanotubes, Harris JM, Iyer GRS, Simien DO, Fagan JA, Huh JY, Chung JY, Hudson SD, Obrzut J, Douglas JF, Stafford CM, Hobbie EK. JOURNAL OF PHYSICAL CHEMISTRY C, 115(10)3973-3981 (2011).
  • Relaxation and antiplasticization measurements in trehalose-glycerol mixtures - A model formulation for protein preservation, Obrzut, J; Anopchenko, A; Douglas, JF, et al., JOURNAL OF NON-CRYSTALLINE SOLIDS, 356(11-17)777-781 (2010).
  • Wrinkling and Strain Softening in Single-Wall Carbon Nanotube Membranes, Hobbie EK, Simien DO, Fagan JA, Huh JY, Chung JY, Hudson SD, Obrzut J, Douglas JF, Stafford CM, PHYSICAL REVIEW LETTERS, 104(12) 125505 (2010).
  • Optical and Conductivity Properties of Films from Liquid-Phase Exfoliation of Natural Graphite, Obrzut, J; Migler, KB, ECS Transactions, 19(5)69-73 (2009)
  • Electrical conductivity and relaxation in poly(3-hexylthiophene), Obrzut, J; Page, KA, PHYSICAL REVIEW B, 80(19)195211 (2009).
  • Microscale Polymer-Nanotube Composites, Hobbie EK, Fagan JA, Obrzut J, Hudson SD, ACS APPLIED MATERIALS & INTERFACES, 1(7)1561-1566 (2009).
  • Measurement of complex conductivity in carbon nanotube polymer composites under mechanical shear, Obrzut, J; Douglas, JF, METROLOGY AND MEASUREMENT SYSTEMS, 15(4)399-407 (2008).
  • Influence of nanotube length on the optical and conductivity properties of thin single-wall carbon nanotube networks, Simien D, Fagan JA, Luo W, Douglas JF, Migler K, Obrzut J, ACS NANO, 2(9)1879-1884 (2008).
  • Impedance and capacitance measurement of individual carbon nanotubes, Obrzut J, Migler K, Dong L, Jiao J, International Conference on Frontiers of Characterization and Metrology for Nanoelectronics, FRONTIERS OF CHARACTERIZATION AND METROLOGY FOR NANOELECTRONICS, 931, 483-485 (2007).
  • Shear-induced conductor-insulator transition in melt-mixed polypropylene-carbon nanotube dispersions, Obrzut, J; Douglas, JF; Kharchenko, SB, et al. PHYSICAL REVIEW B, 76(19) 195420 (2007).
  • Relationship between dispersion metric and properties of PMMA/SWNT nanocomposites, Kashiwagi, T; Fagan, J; Douglas, JF, et al.POLYMER,48(16)4855-4866 (2007).
  • Dielectric study of the antiplasticization of trehalose by glycerol Anopchenko, A; Psurek, T; VanderHart, D, et al.PHYSICAL REVIEW E, 74(3)031501 (2006).
  • Charge transport in melt-dispersed carbon nanotubes, Hobbie, EK; Obrzut, J; Kharchenko, SB, et al. JOURNAL OF CHEMICAL PHYSICS, 125(4)044712 (2006).
  • Input impedance of a coaxial line terminated with a complex gap capacitance - Numerical and experimental analysis, Obrzut, J; Anopchenko, A, IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, 53(4) 1197-1201 (2004).
  • Flow-induced properties of nanotube-filled polymer materials, Kharchenko, SB; Douglas, JF; Obrzut, J, et al. NATURE MATERIALS, 3(8) 564-568 (2004).
  • Optical measurements of structure and orientation in sheared carbon-nanotube suspensions, Hobbie, EK; Wang, H; Kim, H, et al. REVIEW OF SCIENTIFIC INSTRUMENTS, 74(3) 1244-1250 (2003).
  • Broadband characterization of high-dielectric constant films for power-ground-decoupling, Obrzut, J; Noda, N; Nozaki, R, IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, 51(4) 829-832 (2002)./li>
  • Dielectric properties of polymer/ferroelectric ceramic composites from 100 Hz to 10 GHz , Popielarz, R; Chiang, CK; Nozaki, R, et al. MACROMOLECULES, 34(17) 5910-5915 (2001).
  • Transport, magnetic, and optical-properties of electrochemically doped poly(1,4-dimethoxy phenylene vinylene), Schlenoff, JB; Obrzut, J; Karasz, FE, PHYSICAL REVIEW B, 40(17) 11822-11833 (1989).
  • Structural characterization of vinylidene fluoride vinyl fluoride copolymers, Guerra, G; Didino, G; Centore, R, et al. MAKROMOLEKULARE CHEMIE-MACROMOLECULAR CHEMISTRY AND PHYSICS, 190(9) 2203-2210 (1989).
  • Solid-state 13C NMR-Study of neutral insulating and electrochemically doped conducting poly(para-phenylene vinylene), Grobelny, J; Obrzut, J; Karasz, FE, SYNTHETIC METALS, 29(1) E97-E102 ( 1989).
  • Photoconductivity of poly(para-phenylene vinylene), Obrzut, J; Obrzut, MJ; Karasz, FE, SYNTHETIC METALS, 29(1) E103-E108 (1989).
  • Photoelectron-spectroscopy of poly(para-phenylene vinylene),Obrzut, J; Obrzut, MJ; Karasz, FE, SYNTHETIC METALS, 29(1)E109-E114(1989).
  • Defects in the electronic-structure of poly(para-phenylene vinylene)- Electronics-spectra, electrochemical-behavior, and molecular-orbital calculations, Obrzut,J; Karasz, FE, JOURNAL OF CHEMICAL PHYSICS, 87(10) 6178-6184 (1987).
  • Use of the Pariser-Parr-Pople approximation to obtain practically useful predictions for electronic spectral properties of conducting polymers, Lahti, PM; Obrzut, J; Karasz, FE, MACROMOLECULES, 20(8) 2023-2026 (1987).
  • Ultraviolet and visible spectroscopy of poly(para-phenylene vinylene), Obrzut, J; Karasz, FE, JOURNAL OF CHEMICAL PHYSICS, 87(4)2349-2358 (1987).
phot of Jan Obrzut

Position:

Materials Research Engineer
Polymers Division
Processing Characterization

Employment History:

  • 1997 - present: Materials Research Engineer, Polymers Division, NIST.
  • 1988-1997: Advisory Engineer-Scientist, IBM System Technology Div., NY.
  • 1987-1988: Research Fellow, Five College Radio Astronomy Department, University of Massachusetts, MA.
  • 1984-1988: Postdoctoral Associate, Polymer Science and Eng, University of Massachusetts, Amherst, MA.

Education:

  • Ph.D., Technical Sciences, Cracow University of Technology, Cracow Poland (1981).
  • M.S., Chemical Engineering, Cracow University of Technology, Cracow Poland (1975).
Contact

Phone: 301-975-6845
Email: jano@nist.gov
Fax: 301-975-3928