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Jan Obrzut (Fed)
Materials Research Engineer
Research Interests:
Broadband and RF/Microwave Measurement and Dielectric Characterization Techniques, PolymerS, composites, Nanocellulose, moisture aBsorption. characterization of Graphene materials and 2D semiconductors
Professional Affiliations:
- Materials Research Society
- IEEE Instrumentation and Measurement Society
- IEEE Microwave Theory and Techniques Society
- IPC, The Global Association for Electronics Manufacturing
Professional Activities:
- NIST Chips R&D Standards, Technical expert
- IEC TC 113 Nanotechnology for Electrotechnical Products and Systems.
US Delegate to IEC, Technical expert, Project leader - ISO TC 229 Nanotechnologies, Member
- IPC TC D-54 Test Method Subcommittee for Embedded Electronic Materials & Devices, Chair
- IPC TC D 60 Printed/Flexible Electronics, Observer
- IPC TC D 70, D74a, E Textile, Technical expert
- iNEMI, National Roadmap for Organic and Printed Electronics, International Electronic Manufacturing Initiative, Co-Chair.
- The Graphene Council, Technical expert
Standards:
- IEC-TS 62607-6-4, Graphene - Surface conductance measurement using resonant cavity (2016, 2022).
- IPC TM 650, Method 2.5.7.2 "Dielectric withstanding voltage, HiPot Method - Thin dielecetric layers for printed circuit boards , PCBs, (2009).
- IPC-2316, Design guide for embedded passive device printed boards (2007)
- IPC-4821, Specification for embedded passive device capacitive materials (2006).
- IPC TM650, Method 2.5.5.10, High frequency testing to determine permittivity and loss tangent of embedded passive dielectric materials (2005).
- IPC-6018A, Microwave end product board inspection and test (2002).
Selected Publications:
“Dielectric Characterization of H2O and CO2 Uptake by Polyethylenimine Films”, Jan Obrzut, Jennifer A. Clark, Avery E. Baumann, and Jack F. Douglas, Langmuir (2024) 40, 8562−8567.
“Bouligand nanocomposites: Self-assembly of cellulose nanocrystals with a thermo-responsive polymer”, Huyen Vu, Jeremiah W. Woodcock , Ajay Krishnamurthy , Jan Obrzut , Jeffrey W. Gilman, E. Bryan Coughlin, (2023) Polymer 281, 126117.
“Quantifying fluorogenic dye hydration in an epoxy resin by non-contact microwave dielectric spectroscopy”, Sindhu Seethamraju, Jan Obrzut, Jack F. Douglas, Jeremiah W. Woodcock, and Jeffrey W. Gilman, (2020) J. Phys. Chem. B 124, 2914−2919.
“Elucidating charge transport mechanisms incellulose-stabilized graphene inks”, Ana C. M. de Moraes, Jan Obrzut, Vinod K. Sangwan, Julia R. Downing, Lindsay E. Chaney, Dinesh K. Patel, Randolph E. Elmquist and Mark C. Hersam, (2020) J. Mater. Chem. C, 8, 15086.
“Examining epitaxial graphene surface conductivity and quantum Hall devicestability with Parylene passivation”, Albert F. Rigosi, Chieh-I Liua, Bi Yi Wua, Hsin-Yen Leea, Mattias Kruskopf, Yanfei Yanga, Heather M. Hill, Jiuning Hu, Emily G. Bittle, Jan Obrzut, Angela R. Hight Walker, Randolph E. Elmquist, David B. Newell, (2018) Microelectronic Engineering,194, 51-55.
“Preservation of Surface Conductivity and Dielectric Loss Tangent in Large-Scale, Encapsulated Epitaxial Graphene Measured by Noncontact Microwave Cavity Perturbations” , Albert F. Rigosi,* Nicholas R. Glavin, Chieh-I Liu, Yanfei Yang, Jan Obrzut, Heather M. Hill, Jiuning Hu, Hsin-Yen Lee, Angela R. Hight Walker,Curt A. Richter, Randolph E. Elmquist, and David B. Newell, (2017) small, 1700452.
"Dielectric Characterization of Confined Water in Chiral Cellulose Nanocrystal Films", Bharath Natarajan, Caglar Dogu Emiroglu, Jan Obrzut, Douglas M. Fox, Beatriz A. Pazmino, Jack F. Douglas, Jeffrey W. Gilman, ACS Applied Materials and Interfaces, (2017) 9, 14222-14231.
"Surface conductance of graphene from non-contact resonant cavity", Jan Obrzut, Caglar Emiroglu, Oleg Kirillov, Yanfei Yang , Randolph E. Elmquist, Measurement, (2016) 87, 146-151.
"Surface conductance and microwave scattering in semicontinuous gold films", J. Obrzut, ACTA IMEKO (2015) 4(3) 42-46.
“Dielectric Characterization by Microwave Cavity Perturbation Corrected for Nonuniform Fields”, Nathan D. Orloff, Jan Obrzut, Christian J. Long, Thomas Lam, Pavel Kabos, David R. Novotny, James C. Booth, and J. Alexander Liddle, IEEE Trans. Microwave Theory, Tech., (2014) 62, 2149-2158.
“Resonant Microwave Absorption in Thermally Deposited Au Nanoparticle Films Near Percolation Coverage”. Jan Obrzut, Jack F. Douglas, Oleg Kirillov, Fred Sharifi, and J. Alexander Liddle, Langmuir (2013) 29, 9010-9015.
“Graphene: A New Horizon for Modern Technology”, Jan Obrzut, MEMA Electroindustry, ppage 4, September (2011).
“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, (2011) 115, 3973-3981.
Relaxation and antiplasticization measurements in trehalose-glycerol mixtures - A model formulation for protein preservation, Obrzut, J; Anopchenko, A; Douglas, JF, et al., J. Non. Cryst. Solids, (2010) 356, 777-781.
Electrical conductivity and relaxation in poly(3-hexylthiophene), Obrzut, J; Page, KA, Phys. Rev. B (2009) 80, 195211.
“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, (2008) 2, 1879-1884.
Shear-induced conductor-insulator transition in melt-mixed polypropylene-carbon nanotube dispersions, Obrzut, J; Douglas, JF; Kharchenko, SB, et al. Phys. Rev. B (2007) 76, 195420.
J. Obrzut and K. Kano, “Impedance and Non-Linear Dielectric Testing at High AC Voltages Using Waveforms”, IEEE Trans. (2005) Inst. Meas. 54, 1570 - 1574 .
S. B. Kharchenko, J. F. Douglas, J. Obrzut, E. A. Grulke, K. B. Migler, “Flow-induced properties of nanotube-filled polymer materials”, (2004) Nature Materials 3, 564-568.
Awards
- 2016 IEC 1906 Award, In recognition of essential contribution to support graphene standardization.
- 2015 NIST Bronze Medal for Excellence in Federal Service.
- 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).
