NIST Technicalendar July 7 to July 11, 2008 The NIST Technicalendar is issued each Friday. All items MUST be submitted electronically from this web page by 12:00 NOON each Wednesday unless otherwise stated in the NIST Technicalendar. The address for online weekly editions of the NIST Technicalendar and NIST Administrative Calendar is: http://www.nist.gov/tcal/.

In this Issue: Meetings at NIST Meetings Elsewhere Announcements Talks by NIST Personnel NIST Web Site Announcements NIST Administrative Calendar (current)   NIST Vacancy Announcements (current)

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10:45 AM - Spectroscopic Studies of Relaxor Ferroelectrics
2:00 PM - Advances in Structural FE-Based Magnetostrictive Alloys
3:00 PM - The Russian-American Gallium Solar Neutrino Experiment (SAGE)

12:30 PM - High Resolution Fast Neutron Spectroscopy

2:00 PM - Biomimetic Replication of Complex Mammalian Tissue Scaffolds via Chemical Vapor Deposition

10:00 AM - Experimental Design and the Value of Information in Proteomics
1:30 PM - Colloidal Nanodevices
3:30 PM - When Water Meets Cement

10:30 AM - Tunable Molecular Beams: A New Frontier in Vacuum Deposition of Organic Semiconductors
10:45 AM - Electromagnons in Multiferroic Manganites

7/7 -- MONDAY

10:45 AM - NIST CENTER FOR NEUTRON RESEARCH SEMINAR: Spectroscopic Studies of Relaxor Ferroelectrics
A piezoelectric material is one that generates a voltage in response to a mechanical strain (and vice versa). The most useful piezoelectric materials display a transition region in their composition phase diagrams, known as a morphotropic phase boundary, where the crystal structure changes abruptly and the electromechanical properties are maximal. As a result, modern piezoelectric materials for technological applications are usually complex, engineered, solid solutions, which complicate their manufacture as well as introducing complexity in the study of the microscopic origins of their properties. Here we show that even a pure compound, in this case lead titanate, can display a morphotropic phase boundary under pressure. The experimental results indicate that lead titanate undergoes successive phase transitions with pressure: from tetragonal to monoclinic at 10 GPa, monoclinic to monoclinic at 16 GPa, and monoclinic to rhombohedral at 20 GPa. The results are consistent with first-principle theoretical predictions, but show a richer phase diagram than anticipated; moreover, the predicted electromechanical coupling at the transition is larger than any known. The results show that the high electromechanical coupling in solid solutions with lead titanate is due to tuning of the high-pressure morphotropic phase boundary in pure lead titanate to ambient pressure. They also find that complex microstructures or compositions are not necessary to obtain strong piezoelectricity. This opens the door to the possible discovery of high-performance, pure-compound electromechanical materials, which could greatly decrease costs and expand the utility of piezoelectric materials.
Muhetaer Aihaiti , Geophysical Lab. ,.
235 Bldg, Rm. E100. (NIST Contact: Jeff Lynn, 301-975-6246, jeffrey.lynn@nist.gov)

2:00 PM - CNST ELECTRON PHYSICS GROUP SEMINAR: Advances in Structural FE-Based Magnetostrictive Alloys
Magnetostrictive materials belong to the family of smart materials that are enabling major advances in noise, vibration and shape control and new approaches to structural health monitoring. An introduction to magnetostrictive materials will be presented, followed by an emphasis on the new structural magnetostrictive alloy Galfenol with discussion of current and potential applications that range from nano-and mems sensors to large scale sonar devices. The presentation will include a summary of on-going research in our ONR MURI Program that in addition to the Univ. Maryland, includes researchers from Iowa State Univ., Univ. Minn, Ohio State, Penn State, Rutgers and Va Tech. This program is focused on structural magnetostrictive alloys, with an emphasis on the iron-gallium alloy known as Galfenol. A discussion of some of the challenges associated with transitioning this relatively new alloy to commercial scale production and thoughts on taking advantage of its unique structural attributes (e.g. ductility and a negative Poison's ratio) will be included in the presentation.
Alison Flatau , Department of Aerospace Engineering, University of Maryland, College Park, MD, aflatau@umd.edu.
217 Bldg., H107 Rm.. (NIST Contact: John Unguris, 301-975-3712, john.unguris@nist.gov)

3:00 PM - IONIZING RADIATION DIVISION SEMINAR: The Russian-American Gallium Solar Neutrino Experiment (SAGE)
The radiochemical solar neutrino experiments using ultrapure gallium have a great impact upon the current view of neutrino oscillations. SAGE is currently the only operating solar neutrino experiment that provides the determination of the fundamental neutrino flux from proton-proton fusion, the dominant reaction powering the sun. Current results of the solar neutrino measurement and results of a source neutrino experiment on the gallium detector are discussed.
Vladimir Gavrin , Institute for Nuclear Research - Russian Academy of Sciences.
245 Bldg, Rm. C301. (NIST Contact: Jeff Nico, 301-975-4663, jnico@nist.gov)


7/8 -- TUESDAY

12:30 PM - IONIZING RADIATION DIVISION SEMINAR: High Resolution Fast Neutron Spectroscopy
John Abdurashitov , Institute for Nuclear Research - Russian Academy of Sciences.
235 Bldg, Rm. E100. (NIST Contact: Jeff Nico, 301-975-4663, jnico@nist.gov)


7/9 -- WEDNESDAY

2:00 PM - POLYMERS DIVISION SEMINAR: Biomimetic Replication of Complex Mammalian Tissue Scaffolds via Chemical Vapor Deposition
An important step in the development of oral drug compounds is determining their ability to pass through the intestinal epithelium, which will affect their bioavailability and therapeutic benefit. Currently, these transport studies are typically done with cell culture systems that, unfortunately, in many cases do not accurately predict oral drug absorption. It is hypothesized that cells cultured on a biomimetic substrate model will more accurately reflect in vivo cellular behavior as compared to those cultured on a flat substrate. The cellular-scale topology of the intestine is a complex, 3-D surface that consists of many finger-like projections (villi) together with deep invaginations (crypts). It is expected that biomimetic nano- and micro-topology will influence the expression of proteins important to drug uptake and metabolism as these proteins are expressed differentially along the villus-crypt axis of the intestinal basement membrane in vivo. To test this hypothesis, we propose to fabricate a topologically biomimetic substrate on which to culture mammalian intestinal epithelial cells. The topology of the intestinal basement membrane will be replicated using a chemical vapor deposition (CVD) technique to create a micron-scale film with nanometer-scale features on a section of pig intestine, a good human analogue. Two pathways are currently being explored – replication in an inorganic material (silica) as well as replication using a conformal biocompatible polymer (pHEMA). To create an inorganic mold of the intestinal sample, the surface topology was replicated exactly by coating it with silica (SiO2). Before-and-after SEM images of the native and silica coated intestinal tissue, together with Energy-Dispersive X-Ray Spectroscopy (EDX) confirmed the deposition of silica on the surface, as well as good retention of the intestinal structure. Post-deposition, a silica-coated intestinal section was placed in bleach, leaving, after dissolution, a free-standing silica replica of the intestinal basement membrane. Retention of the microstructure was again confirmed using SEM. Polymer studies were carried out using Poly(2-hydroxyethyl methacrylate) (pHEMA). pHEMA has been widely used in cell culture because it is generally biocompatible and its porosity can be controlled by adjusting the degree of crosslinking, making it ideal for drug transport studies. HEMA is an extremely convenient material for these studies, as it can be polymerized successfully using a variety of CVD techniques, including plasma CVD, initiated (hot wire) CVD, and photo-initiated CVD. Adding the co-monomer ethylene glycol diacrylate (EGDA) in varying amounts allowed for variable crosslinking of the pHEMA, between 0 and 50%. Fourier Transform Infrared Spectrocopy (FT-IR) and X-Ray Photoelectron Spectroscopy (XPS) examination of the deposited polymer films confirmed retention of the desired functional groups, as well as the degree of crosslinking. SEM imaging also showed conformal deposition of the polymer film onto the complex intestinal basement membrane. The pHEMA thin films produced become hydrogels after a 24 hour incubation period, and the degree of crosslinking affects the extent of film swelling and degradation over time. The non-crosslinked pHEMA film swelled 12% from its original thickness after 24 hours and degraded completely after 7 days under soak. Films with low and high crosslinking swelled 3% and 1% after 24 hours of incubation, respectively. Degradation studies show that films with a high degree of cross-linking experienced the least polymer degradation after 21 days in incubation with a 12% thickness loss, where the low cross-linked films thickness decreased 27% over the same amount of time. The biocompatibility of the crosslinked pHEMA films was also investigated using the Caco-2 intestinal tumor cell line. The study showed that cell proliferation and viability upon plasma deposited crosslinked pHEMA was comparable to that on polystyrene, a common cell culture substrate.
Daniel Burkey , Professor, Northeastern University.
224 Bldg, Rm. A312. (NIST Contact: Dean DeLongchamp, 301-975-5599, deand@nist.gov)


7/10 -- THURSDAY

10:00 AM - PHYSICAL AND CHEMICAL PROPERTIES DIVISION SEMINAR: Experimental Design and the Value of Information in Proteomics
David Fenyo , The Rockefeller University.
Physics Bldg, Rm. A366. (NIST Contact: Stephen Stein, 301-975-2505, stephen.stein@nist.gov)

1:30 PM - CNST NANOFABRICATION RESEARCH GROUP SEMINAR: Colloidal Nanodevices
I will propose alternative strategies developed in the ColloNa team to manipulate (assembly, localize, separate...) colloidal nanostructures and evaluate the asets of these methods in terms of nanoengineering, and nanomachining. I will show that the integration of colloidal nanostructures into nanodevices can be studied in real-time by Capillary-Force-Assembly (CFA): CFA is based on the control of capillary force to overcome colloidal Brownian motion at the triple contact-line during solvant dewetting accross a patterned surface. We study dynamically several strategies (bath, drop or microfluidic cell evaporation control) to assemble, or individually localize, inorganic colloidal nanostructures into predefined patterns. I will present a low-cost global strategy to collectively realize Single-Nanostructure Device. It is based on the combination of Nanoimprint lithography and colloidal dielectrophoresis trapping at the single particle level. Finally, I will detailed physical properties of colloidal/supra-colloidal nanostructure such as single Au-nanoparticle coulomb blockade or spectroscopic properties of deterministic gold colloidal assemblies.
Dr. David Peyrade , Colloidal Nanodevices Team.
Bldg. 217, Rm. H107. (NIST Contact: Henri Lezec, 301-975-8612, henri.lezec@nist.gov)

3:30 PM - SURF SUMMER SEMINAR SERIES: When Water Meets Cement
Concrete is the second most consumed material on a worldwide basis, after water. The key components of concrete are water and cement (along with sand and stone) and their interactions are responsible for the amazing transition that concrete undergoes, from a viscous suspension into a rigid load-bearing solid. This talk will provide overviews of concrete and cement production and then proceed into a presentation of what happens when water meets cement. Hydration reactions, chemical shrinkage, and autogenous expansions and shrinkages will be introduced. The importance of proper curing of concrete will be emphasized and the talk will finish by considering the long term interactions between water and cement that influence durability and service life.
Dale Bentz , Materials and Construction Research Division, Building and Fire Research Laboratory.
Administration Bldg, Green Auditorium. (NIST Contact: Anita Sweigert, 301-975-4201, anita.sweigert@nist.gov)
Special Assistance; Contact A. Sweigert a week in advance.


7/11 -- FRIDAY

10:30 AM - POLYMERS DIVISION SEMINAR: Tunable Molecular Beams: A New Frontier in Vacuum Deposition of Organic Semiconductors
Organic electronics are widely believed to be the most viable platform to manufacture pervasive and disposable electronics on flexible substrates cheaply and with a lesser environmental impact than conventional electronics. The performance of organic electronic devices is closely tied to the packing structure, morphology and interfaces in organic semiconductor thin films, which in turn are intricately linked to molecular processes operant during their assembly. Typically, vacuum sublimation/evaporation is used to fabricate ordered molecular films (e.g., pentacene). While the simplicity of thermal deposition processes makes them attractive, they provide few knobs in way of process control. Supersonic molecular beams have emerged as a way to tailor the assembly of complex molecular building blocks by manipulating the state of incident molecules (e.g., kinetic energy, vibro-rotational states, molecular clustering). Using a powerful combination of in situ real-time synchrotron X-ray scattering, scanning probe microscopy, rate equation modeling and molecular dynamics simulations, we investigate molecular-scale processes of adsorption, assembly, and molecular crystallite formation during supersonic molecular beam deposition of small-molecule thin films of pentacene and diindenoperylene. Our research shows that tunable supersonic molecular beams can tailor the mode and kinetics of growth, resulting in a control of the morphology and packing structure of organic small-molecule semiconductors in unprecedented ways. These changes can influence the field effect mobility of organic semiconductors and offer a pathway to control the performance of organic electronic materials and devices thereof. Our findings indicate that molecular-scale control of interfaces and thin films is achievable; it is contingent upon the development of adequate processing strategies.
Aram Amassian , Cornell University.
224 Bldg, Rm. A312. (NIST Contact: Dean DeLongchamp, 301-975-5599, deand@nist.gov)

10:45 AM - NIST CENTER FOR NEUTRON RESEARCH SEMINAR: Electromagnons in Multiferroic Manganites
In multiferroic materials the coexistence of magnetic and ferroelectric orders can produce cross coupling between electric and magnetic signals that are usually independent and exhibit interesting new fundamental features. The absence of both time and space inversion symmetry in relatively low symmetry crystal structures can produce a rich array of novel magneto-electric phenomena. One such new phenomenon, which is the topic of this talk, is a strong coupling between the low lying magnetic and lattice excitations to produce spin waves that interact strongly with light by acquiring electric dipole activity from the phonons. Therefore these excitations, called electromagnons, produce a contribution to the static dielectric constant that can be manipulated by magnetic fields. The speaker will discuss the electromagnon excitations in two classes of multiferroic materials, RMn2O5 and RMnO3, where R is a rare earth ion or Y. The origin of these excitations will be discussed in terms of the symmetric Heisenberg exchange interaction, as opposed to the antisymmetric Dzyaloshinskii-Moriya exchange that has traditionally been used to explain the static ferroelectric polarization. A model of symmetric exchange striction is used for both families of materials that is capable of reproducing the main observed features of the electromagnons as measured by their interaction with light. *Work done in collaboration with A.B. Sushkov, M. Mostovoy, S-W. Cheong and H.D. Drew. Support from NSF-MRSEC DMR-0520471 is acknowledged.
Rolando Aguilar , University of Maryland.
235 Bldg, Rm. E100. (NIST Contact: Jeff Lynn, 301-975-6246, jeffrey.lynn@nist.gov)


ADVANCE NOTICE

7/17/08 11:00 AM - MATERIALS SCIENCE AND ENGINEERING LABORATORY LECTURE SERIES: Advanced Capabilities for Synchrotron Measurement Science and Technology
The NIST Synchrotron Methods Group develops and exploits new experimental methods, detectors, and physics approaches in synchrotron materials science to study the structure and chemical nature of diverse materials, in partnership with Industry, National Labs, and University researchers.  The Group operates a suite of three spectroscopy beamlines at the National Synchrotron Light Source at Brookhaven National Laboratory. The beamline measurement capabilities are used to accelerate the development of new and advanced functional materials enabled by unique synchrotron X-ray measurements and establish structure function relationships for rational materials design to promote innovation and industrial competitiveness.  To this end, we develop synchrotron X-ray measurement methods to measure structure and chemistry: (1) on the scale ranging from atomic to tens of nanometers, particularly for low concentrations of materials; (2) at the surface of individual nanoscale entities such as nanotubes and nanoparticles; (3) at specific locations; e.g., an interface in a multilayer device; and (4) under relevant conditions, e.g., temperature and pressure, that the material will be subjected to in use.  Materials currently under investigation include organic and inorganic electronics, model catalyst systems, polymer surfaces and interfaces, hard disk lubricants, self-assembled monolayers, and high temperature superconductors.  An overview of the NIST spectroscopy beamline suite, specialized measurement capabilities, and several examples of measurement results will be presented.   In particular, we will motivate and highlight our development of synchrotron-based variable kinetic energy x-ray photoemission spectroscopy for non-destructive depth profiling and, ultimately, 3D chemical imaging at the nanoscale.
Dan Fischer , Physicist.
Administration Bldg, Green Auditorium. (NIST Contact: Bill Boettinger, 301-975-6160, william.boettinger@nist.gov)

7/21/08 10:30 AM - CNST ELECTRON PHYSICS GROUP SEMINAR: Low energy-spread ion beams from a trapped atomic gas
Pulsed and continuous ion beams are used in applications such as focused ion beams. The smallest achievable spot size in focused ion beam technology is limited by the monochromaticity of the ion source. Here we present energy spread measurements on a new source concept, the ultracold ion source [1,2]. It produces ion beams by near-threshold ionization of laser cooled atoms. In recent detailed particle tracking simulations we found that the brightness of such a source can compete with that of the industry standard liquid metal ion source (LMI) but offers the advantage of reduced longitudinal energy spread [1]. In the experiment, rubidium atoms are captured in a magneto-optical trap inside an accelerator structure where they are ionized by a pulsed laser in a DC electric field. The resulting cold ion bunch is accelerated towards a multi-channel plate detector where the time-dependent ion current is measured. The relative spread in time of flight to the detector is a good measure for the relative longitudinal energy spread in the bunch. Two order of magnitude lower energy spread is achieved compared to the liquid-metal ion source. Bunches with an energy of only 2 eV are produced with an rms energy spread as low as 0:01 eV.
Edgar J. Vredenbregt , Dr./Department of Applied Physics, Eindhoven University of Technology, The Netherlands.
217 Bldg., H107 Rm.. (NIST Contact: Jabez McClelland, 301-975-3721, jabez.mcclelland@nist.gov)

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MEETINGS ELSEWHERE


7/7 -- MONDAY

No Scheduled Events

7/8 -- TUESDAY

No Scheduled Events

7/9 -- WEDNESDAY

No Scheduled Events

7/10 -- THURSDAY

No Scheduled Events

7/11 -- FRIDAY

No Scheduled Events

ADVANCE NOTICE

No Scheduled Events

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TALKS BY NIST PERSONNEL

CARASSO, A. : COUNTEREXAMPLES OF BLIND DECONVOLUTION.
2008 SIAM Annual Meeting, San Diego, CA, 7/8.

RUST, B. : REGULARIZATION PARAMETER SELECTION FOR ILL-POSED PROBLEMS.
2008 SIAM Annual Meeting, San Diego, CA, 7/8.

RUST, B. : ATMOSPHERIC RETENTION OF MAN-MADE CARBON DIOXIDE EMISSIONS.
2008 SIAM Annual Meeting, San Diego, CA, 7/9.

GILSINN, D. : ESTIMATING THE FUNDAMENTAL MATRIX OF A LINEAR DELAY DIFFERENTIAL EQUATION.
2008 SIAM Annual Meeting, San Diego, CA, 7/9.

REID, A. : OOF: AN OBJECT-ORIENTED FINITE ELEMENT SOLVER FOR MATERIALS SCIENCE.
2008 SIAM Annual Meeting, San Diego, CA, 7/9.

BURGESS, JR., D. : PROPERTIES NEEDS FOR BIOFUELS AND BLENDS: PRODUCTION, DISTRIBUTION, AND END USE.
Boulder/NIST, Boulder, CO, 7/10.

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ANNOUNCEMENTS

INSTITUTIONAL REVIEW BOARD (IRB)
Research Involving Human Subjects Individuals at NIST who wish to do, or wish to sponsor any research involving human subjects, including human cells or tissue, are required by Federal regulations to obtain approval before embarking on the research. This includes: -Research conducted here at NIST by NIST employees or guest workers -Collaborative research with others outside of NIST, including CRADAs and other agreements -Research funded by NIST through grants, contracts, or cooperative agreements The current procedures for approving projects involving human subjects can be found in the NIST Administrative Manual Subchapter 14.01, Protection of Human Subjects (http://www-i.nist.gov/admin/mo/adman/1401.htm). These procedures ensure that the proposed research is in compliance with the applicable DOC Regulations, 15 CFR 27 http://www.access.gpo.gov/nara/cfr/waisidx_99/15cfr27_99.html. NIST's Institutional Review Board (IRB) reviews and approves those research proposals that require review except in cases where an outside IRB has jurisdiction. The NIST IRB is described in Administrative Manual Subchapter 3.01, Appendix A (http://www-i.nist.gov/admin/mo/adman/301irb.htm). These regulations are broader than many people realize, and involve more than, for example, just invasive medical procedures. They can also cover volunteers participating in questionnaires and surveys and people testing computer software. All research involving human subjects and being conducted at an institution outside of NIST that has not been determined to be exempt from the Federal policy by the appropriate NIST OU Director needs to have an approval from that institution's Institutional Review Board (IRB) or from an IRB that is currently registered with the Office for Human Research Protections (OHRP), DHHS. In addition, the institution conducting the research involving human subjects must have a current Federal-wide Assurance (FWA) on file with OHRP. The outside IRB's approval will be subject to concurrence by NIST. The NIST IRB Chair reviews the documentation provided by the outside researchers and IRB and recommends approval or disapproval to the NIST Deputy Director, with the concurrence of the Chief Counsel for NIST. Research being conducted at NIST by NIST employees that has not been determined to be exempt by the appropriate NIST OU Director must be reviewed by the NIST IRB (formerly called The NIST Human Research Ethics Committee). The use of human subjects in the project may not begin until the Chief Counsel for NIST has concurred with the IRB's recommendation to approve the project and the Deputy Director of NIST has approved it. Signatures required before the proposal is sent to the NIST IRB include that of the Group Leader and Division Chief (who approve the scientific merit of the research), and the Laboratory Director (who determines whether it is exempt). An OU Director's exemption determination must receive concurrence from the Chief Counsel for NIST and then be forwarded to the NIST IRB Acting Chair, Dr. Lisa R. Karam for noting and filing. For more information, contact the NIST IRB Secretary, Janet Brumby, (301) 975-3189 or email: brumby@nist.gov or visit our website at: http://www-i.nist.gov/director/IRB/ (For best viewing of all pages associated with this website, your monitor should have a display setting of 800 by 600 and in Microsoft Internet Explorer). All correspondence should be mailed to Mail Stop 1710.
NIST Contact: Janet Brumby, 301-975-3189, janet.brumby@nist.gov

2008 WORLD STANDARDS DAY PAPER COMPETITION
The U.S. standards community will celebrate World Standards Day on Thursday, October 23, 2008, at the Ronald Reagan Building and International Trade Center in Washington, DC. The theme for this year's celebration, "Intelligent and Sustainable Buildings," recognizes the critical role of standards and conformity assessment programs in ensuring safety requirements; facilitating coordination among contractors, builders, engineers, and architects; and incorporating new technologies in design and construction. In conjunction with this year's event, the 2008 World Standards Day sponsors, including NIST will hold the annual paper competition. The 2008 World Standards Day Paper Competition invites papers that use specific examples to show ways that standards and conformity assessment programs are used for intelligent and sustainable buildings. Paper competition winners will be announced and given their awards at the US celebration of World Standards Day. The first place winner will receive a plaque and $2,500. Second and third place winners will receive $1,000 and $500, respectively, along with a certificate. In addition, the winning papers will be published in SES's journal, "Standards Engineering." ELIGIBILITY: The competition is open to U.S.-based individuals in the private sector, government, or academia. Papers may be co-authored. RULES: Entries must be original and not previously published. NIST papers must be processed through WERB or BERB. All paper contest submissions must be received with an official entry form by midnight on August 29, 2008, by the SES Executive Director, 13340 SW 96th Avenue, Miami, Florida, 33176. Complete details and official entry forms are available on the SES website www.ses-standards.org (follow the link for "2008 WSD Paper Competition.") For additional information about the U.S. Celebration of World Standards Day, or to register for the event, please visit www.wsd-us.org.
NIST Contact: Mary Donaldson, 301-975-6197, mary.donaldson@nist.gov

PUBLICATIONS PRINTING DEADLINE AUGUST 14, 2008
August 14 is the last day in FY 2008 to submit materials using FY 2008 funds to the Electronic Information and Publications Group (EIPG) for printing at the Department of Commerce or Government Printing Office. To assure timely processing, bring your Editorial Review Board-approved document or administrative printing job and appropriate paperwork to the EIPG office by close of business on Thursday, August 14, 2008. The office is located on the mezzanine floor of the NIST Research Library in the Admin Building, Room E220. Questions? Ilse Putman, x2780 or Barbara Silcox, x2146.
NIST Contact: Ilse Putman, 301-975-2780, ilse.putman@nist.gov

VISITOR REGISTRATION FOR NIST EVENTS
Because of heightened security at the NIST Gaithersburg site, members of the public who wish to attend meetings, seminars, lectures, etc. must first register in advance. For more information please call or e-mail the "NIST Contact" for the particular event you would like to attend.
NIST Contact: . ., ., .

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NIST WEB SITE ANNOUNCEMENTS

No Web Site announcements this week.

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For more information, contact Ms. Sharon Hallman, Editor, Stop 2500, National Institute of Standards and Technology, Gaithersburg MD 20899-2500; Telephone: 301-975-TCAL (3570); Fax: 301-926-4431; or Email: tcal@nist.gov.

All lectures and meetings are open unless otherwise stated.

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