NIST Technicalendar February 4 to February 8, 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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10:30 AM - Characterization challenges in biopharmaceutical product development

8:30 AM - Visiting Committee on Advanced Technology (VCAT) Meeting
2:30 PM - 3D Microscopy by New Non-Scanning 2 Photon and Holographic Techniques

No Scheduled Events

10:30 AM - Understanding the surfaces of quasi-1D Metal Oxides: from spectromicroscopy of single wires to prototype chemical sensors.
10:45 AM - Polarized Neutron Diffraction Study of the Ferromagnetic Semiconductor Yb14MnSb11
1:30 PM - DC Area FIB/SEM Users Group Meeting

10:30 AM - The Quick Kill / Stimulating Innovation in Medical Research and the Future of Surgery / Perspectives of an Engineer/Radiologist

2/4 -- MONDAY

10:30 AM - POLYMERS DIVISION SEMINAR: Characterization challenges in biopharmaceutical product development
The development of a proper drug formulation is necessary to bring a new pharmaceutical product to market. During the drug approval process, the FDA requires real-time stability data up to the proposed shelf-life of the formulated drug product. However, a candidate formulation is typically selected using data from short-term, accelerated stability studies. For proteins and other biopharmaceuticals, degradation from accelerated studies may not accurately represent the degradation that could occur over the product shelf-life under the recommended storage conditions. For example, protein aggregation kinetics will differ if temperature conditions are above or below the folding temperature. Compounding this issue, it is often difficult to characterize trace amounts of protein aggregates, which may lead to an unwanted immunogenic response, in a candidate formulation. Therefore, it is important to develop new measurement techniques that can accurately and quickly screen protein formulations. In this talk, I will discuss both current and new characterization methods used to select protein drug formulations.
Jason Cheung , Schering-Plough Research Institute.
224 Bldg, Rm. A312. (NIST Contact: Scott Stanley, 301-975-6219, scott.stanley@nist.gov)


2/5 -- TUESDAY

8:30 AM - OFFICE OF THE DIRECTOR, NIST SEMINAR: Visiting Committee on Advanced Technology (VCAT) Meeting
James Turner , Acting NIST Director.
Administration Bldg, Employees Lounge. (NIST Contact: J. Brumby, 301-975-3189, janet.brumby@nist.gov)

2:30 PM - OPTICAL TECHNOLOGY DIVISION SEMINAR: 3D Microscopy by New Non-Scanning 2 Photon and Holographic Techniques
Dr. Gary Brooker , Director John Hopkins Unversity Microscopy Center, Rockville, MD, gbrooker@jhu.edu.
AML/ 217 Bldg, Rm. H107. (NIST Contact: Kimberly Briggman, 301-975-2358, kimberly.briggman@nist.gov)


2/6 -- WEDNESDAY

No Scheduled Events

2/7 -- THURSDAY

10:30 AM - CNST NANOTECHNOLOGY SEMINAR SERIES: Understanding the surfaces of quasi-1D Metal Oxides: from spectromicroscopy of single wires to prototype chemical sensors.
The growing amount of exiting demonstration of photovoltaic, (photo-) catalytic and sensor devices based on quasi 1D and 2D metal oxide nanostructures requires the fundamental understanding of their surfaces affecting the transport and the optical properties. In conjunction with transport measurements, we have applied a range of spectroscopic and imaging techniques to individual metal oxide nanostructure to address the chemical and photochemical processes taking place on its surface. In particular, we use an array of scanning probe, electron, and synchrotron radiation based photoelectron emission spectro-microscopies to investigate in situ the evolution of structural, electronic and chemical particularities in an operating nanodevice under wide range of the experimental conditions such as temperature, chemical environments (including liquids) electrostatic field, sensitization with catalyst particles, radiation etc,. Benefiting from the gained knowledge, we develop the real world prototypes for nanowire based (photo-) catalytic and chemical sensor platforms.
Prof. Andrei Kolmakov , Physics Department, SIUC, Carbondale, IL, , akolmakov@physics.siu.edu.
Bldg. 215, Rm. C103-C106. (NIST Contact: Nikolai Zhitenev, 301-975-6039, nikolai.zhitenev@nist.gov)

10:45 AM - NIST CENTER FOR NEUTRON RESEARCH SEMINAR: Polarized Neutron Diffraction Study of the Ferromagnetic Semiconductor Yb14MnSb11
Our study focuses on transmission neutron spin filters based on polarized 3He and its applications. Polarized 3He is usually produced offsite using spin exchange optical pumping (SEOP) method. Here we report an onsite SEOP 3He pumping system which successfully polarizes 3He while placed in a neutron beam line. It produced polarized 3He with polarization up to 69%. This system is also embedded in an adiabatic fast passage (AFP) nuclear resonance (NMR) device which flips 3He spin axis with nearly no polarization loss. By installing this system at the Single Crystal Diffractometer instrument at IPNS, we performed a polarized neutron diffraction study on magnetic sample Yb14MnSb11. Of our particular interest is the distribution of the spin density in the unit cell, where a Mn2+ (d5) configuration with the moment compensated by the antialligned spin of an Sb 5p hole is expected.
Xin (Tony) Tong , Indiana University. ,.
235 Bldg, Rm. E100. (NIST Contact: Rob Dimeo, 301-975-8135, robert.dimeo@nist.gov)

1:30 PM - CENTER FOR NANOSCALE SCIENCE AND TECHNOLOGY SEMINAR: DC Area FIB/SEM Users Group Meeting
A kickoff meeting of the DC-area FIB and FIB-SEM user group will be held at NIST. This first meeting will be a chance for the local FIB users to meet each other, learn about each other's facilities and applications as well as decide on some organizational details. Please join us if you are interested in FIB related topics. The Nanofab Users Information meetings provide an opportunity for users to present work and comments to the Nanofab staff. If you have an idea about a topic you would like to hear more about or if you are interested in presenting to the group please contact. Alexander Liddle, at: alex.liddle@nist.gov Ext. 6050 Sponsors: NIST CNST NanoFab User Group FEI Company
Rhonda Stroud , NRL. David MacMahon , Micron.. Brian Schuster, ARL. Henri Lezec, NIST. David Elbert, Johns Hopkins University.
Bldg. 215, Room C103/106. (NIST Contact: Alex Liddle, 301-975-6050, alex.liddle@nist.gov)


2/8 -- FRIDAY

10:30 AM - NIST COLLOQUIUM SERIES: The Quick Kill / Stimulating Innovation in Medical Research and the Future of Surgery / Perspectives of an Engineer/Radiologist
The goal in research is to find new ideas, make new discoveries, and develop them into practical products or processes. I worked in one of many laboratories that existed once upon a time for just that purpose. The main job of the technical staff was to invent and innovate. The main job of administration was to provide the resources and the environment. The main tool used to support our efforts was the "Quick Kill." Most new ideas fail. At the RCA Labs the expectation was that 80% of all ideas would fail. They managed to that expectation. The Quick Kill was used to weed out the failures. Twice each year we would come together for an award ceremony. Those ideas that hadn't quite made it were celebrated. Nice plaques, the "kiss of death" awards, were distributed. The project was terminated. The next morning the boss would ask, "What's your new idea?" Failing was not the sin; the only sin was not having new ideas. In this talk I will describe how we are applying these concepts to try and create the "OR of the Future."
Reuben Mezrich, M.D., Ph.D. , Chairman, University of Maryland School of Medicine, Department of Radiology.
Administration Building, Red Auditorium. (NIST Contact: Kum Ham, 301-975-4203, kham@nist.gov)
Special Assistance Available


ADVANCE NOTICE

2/19/08 3:30 PM - MATHEMATICAL AND COMPUTATIONAL SCIENCES DIVISION SEMINAR: Evaluation of Uncertainty Associated With the Avogadro Constant
Ruediger Kessel , Mathematical and Computational Sciences Div..
Administration Bldg, Lecture Rm. C. (NIST Contact: Raghu Kacker, 301-975-2109, raghu.kacker@nist.gov) http://math.nist.gov/mcsd/Seminars/2008/2008-02-19-Kessel.html

2/20/08 1:30 PM - CNST NANOFABRICATION RESEARCH GROUP SEMINAR: Nonlinear Optics in Silicon Photonic Wires: Theory and Application
Silicon photonic wires (SPW) are deeply scaled silicon waveguides with transverse dimensions much less than 1 ?m. Integrated silicon photonic devices based on SPW generally have very small footprint and very strong light confinement, which lead to many advantageous physical properties: capability for dispersion engineering, high optical-field density, enhanced effective nonlinearity, and intrinsically short carrier lifetime. First, I will present a comprehensive theoretical model developed to describe pulse dynamics in high-index-contrast and anisotropic waveguides. Third-order nonlinearities, dispersion effects up to the third-order and carrier effects are the three major contributors to the rich pulse dynamics in SPW. In this thesis, various nonlinear optical processes in SPW such as stimulated Raman Scattering (SRS), self-phase modulation (SPM), cross-phase modulation (XPM), modulation instability (MI), and third-order dispersion (TOD) induced soliton-radiation effect are studied theoretically and experimentally. In linear regime, I systematically investigated the "dispersion engineering" in SPW and experimentally demonstrated that SPW could support wavelength-division multiplexing (WDM) transmission at 300 Gb/s for intra-chip optical network. SPM of optical pulses with temporal widths in both picosecond and femtosecond regimes is studied experimentally and theoretically. In the femtosecond regime, the interplay of nonlinear effects, group-velocity-dispersion (GVD) and TOD results in soliton-like pulse propagation in SPW. TOD-induced soliton radiation was demonstrated both numerically and experimentally. XPM is studied using two femtosecond pulses. I investigated the time-resolved phase modulation as a manifestation of the walk-off between these two pulses. XPM is also utilized to optically compress a weak 200-fs pulse propagating in the anomalous GVD regime. MI is a four-wave-mixing (FWM) process that is phase-matched by SPM. We demonstrated that strong MI can be observed in silicon photonic wires with lengths of only a few millimeters using numerical simulation. Our results suggest that MI can be employed to design on-chip optical sources with a highly tunable repetition rate. SRS-based optical amplification in silicon waveguide is a significant functionality. I use the model developed in this thesis to study numerically SRS-mediated pulse dynamics, such as Stokes pulse generation from noise and Raman amplification of Stokes pulse.
Xiaogang Chen , Research Associate - Columbia University, New York, NY.
217 Bldg, Rm. H107. (NIST Contact: Kartik Srinivasan, 301-975-5938, kartik.srinivasan@nist.gov)

2/21/08 8:30 AM - TECHNOLOGY SERVICES SEMINAR: Global Perspectives and Strategies for Education about Standardization Workshop
This workshop is to promote and support awareness of education about standardization worldwide. The two-day workshop will consist of an overview of activities and programs from standards professionals around the world as well as a discussion of key issues, needs and challenges facing those who are involved in standards education.
John Hill , Sun Microsystems. Additional speakers will be Dr. Richard Forselius, United Technologies; Mr. James Olshefsky, Director, External Relations and many more panelists
101 Bldg, Red Auditorium. (NIST Contact: Erik Puskar, 301-975-8619, erik.puskar@nist.gov) http://www.nist.gov/director/sco/index.cfm?ices-workshop.cfm
Special Assistance Available

2/22/08 10:30 AM - NIST COLLOQUIUM SERIES: Benjamin Franklin: The First Scientific American
Famous, fascinating Benjamin Franklin--he would be neither without his accomplishments in science. Franklin was the first person born in the Americas who became internationally celebrated for work in physical science. Although he has been most celebrated for his electrical experiments, he did far more, eventually making major contributions to no fewer than three areas of science, which we would now recognize as the fields of physics, oceanography, and demography. In all three fields, Franklin drew upon his American environment and experiences, though in significantly different ways in each case. Copies of "Benjamin Franklin: In Pursuit of Genius" will be available for review and purchase at the talk.
Joyce Chaplin , History Department, Harvard University.
Administration Building, Red Auditorium. (NIST Contact: Kum Ham, 301-975-4203, kham@nist.gov)
Special Assistance Available

2/25/08 1:30 PM - CNST ELECTRON PHYSICS GROUP SEMINAR: Block-copolymer lithography for patterning perpendicular magnetic nano-islands
Templated block copolymer lithography is a powerful method of fabricating nanostructures which draws on the combined strengths of both top-down and bottom-up methods. This talk will discuss the fabrication and magnetic properties of ordered and disordered perpendicular CoCrPt magnetic islands in a range of sizes (5-15nm thick, 20-30nm diameter) fabricated by this method. Disordered patterns were obtained by annealing a thin spin-coated film of polystyrene-polyferrocenyldimethylsilane (PS-PFS) block copolymer. Ordered arrays were fabricated by a similar method, except the polymer was first templated using a removable topographic template. While topographical templates have previously been used to impose long-range order on block copolymer systems, their use results in residual surface relief on the substrate and therefore in the finished device, which is generally undesirable. To avoid this, a removable template may be used. The pattern can then be transferred into functional materials such as silica, W or magnetic films to make long-range-ordered dot arrays over planar substrates. In particular, magnetic islands fabricated by this method maintain their perpendicular magnetic anisotropy but show increased coercivity (800-1650 Oe) as compared to the unpatterned film (150 Oe). Since the islands are uniaxial and non-interacting (calculated nearest neighbor fields are 50 Oe, Hc), time-scale-dependent magnetic properties could be characterized using Sharrock's approach. The measurements show switching volumes (V*) on the order of the physical volume of the dots (~5000 nm3) suggesting that the dots switch their magnetization coherently and independently of each other. The advantages of this technique will be discussed for large-area self-assembled nanoscale pattern formation, and how it can be applied to the fabrication of various structures including patterned magnetic media, DNA sorting and detection devices or plasmon waveguides.
FILIP ILIEVSKI , RESEARCH ASSISTANT, MASSACHUSETTS INSTITUTE OF TECHNOLOGY.
Bldg. 217, Rm. H107. (NIST Contact: Robert McMichael, 301-975-5121, robert.mcmichael@nist.gov)

2/26/08 7:00 PM - ASQ SOFTWARE SPECIAL INTEREST GROUP AND SOCIETY FOR SOFTWARE QUALITY: Are You Ready for an External Audit?
"Are You Ready for an External Audit?" is about how to determine if you are ready for an audit such as CMMI appraisal or ISO 9001:2000. Carolyn Lincoln will outline a method of mapping your artifacts to the model and then measuring your progress toward readiness for the audit. Carolyn Lincoln has over 20 years of experience in IT, first as a programmer and then a project manager. For the last 10+ years, she has been working on process improvement as an internal consultant and quality assurance manager. Carolyn has participated in CMMI appraisals and ISO 9001:2000 audits and is now working with a project on ISO 20000:2005 certification. Her ASQ certifications are as a Quality Manager, Quality Auditor and Green Belt. She obtained her bachelor's degree from Michigan State University and a master's from Johns Hopkins. There is no cost to attend, but please register by noon Friday, February 22nd, 2008 by contacting Scott Ankrum at ankrums@mitre.org or 703-983-6127. Pizza and soda will be served at 6:30 PM.
Carolyn Lincoln , Quality Assurance Manager.
Administration Bldg, Lecture Rm. C. (NIST Contact: Paul E. Black, 301-975-4794, paul.black@nist.gov)

2/28/08 1:00 PM - POLYMERS DIVISION SEMINAR: Novel Dynamics in Stokes Flow
When an elastic fiber is moving in a Stokesian fluid, it may become susceptible to buckling instability when moving in the neighborhood of a hyperbolic point of the flow. When the stagnation point is part of a spatially-extended cellular flow, it is found that fibers can move as random walkers across time-independent closed-streamline flow. It is also found that the flow is segregated into transport regions around hyperbolic stagnation points and their manifolds, and closed entrapment regions around elliptic points. Another example is a viscous drop immersed in Stokes flow with time-varying rotation. Due to the fluid-interface interaction, the drop dynamics becomes chaotic even in the Stokesian regime. The chaotic dynamics is found to arise from a cascade of period-doubling bifurcations. We will further discuss how this findings can be useful in designing micro-fluidic mixers.
Yuan-nan Young , Professor New Jersey Institute of Technology, Department of Applied Mathematics, Newark, NJ, yyoung@oak.njit.edu.
224 Bldg, Rm. A312. (NIST Contact: Erik Hobbie, 301-975-6774, erik.hobbie@nist.gov)

3/6/08 10:30 AM - CNST NANOTECHNOLOGY SEMINAR SERIES: Biomimetic Nanoscience: Challenges and Opportunities
The adaptive pressures displayed across the flora and fauna result in a variety of sophisticated nanostructured materials that are perfected to perform multiple biological functions. Our understanding of the underlying principles of their formation provides ample opportunities in the synthesis of next generation, bio-inspired, nanostructured materials. To date, there has been demonstrable progress in materials fabrication harnessing the functional power of biological systems. There is, however, a number of challenges related to the characterization of both biological and synthetic bio-related structures. I will exemplify this point by describing new synthetic strategies and devices that have been inspired by the study of two organisms – echinoderms and sponges. The topics will include self-assembly, control of crystallization, adaptive optical structures, fiber-optics, biomechanics, hybrid materials and novel actuation systems.
Joanna Aizenberg , Professor - Harvard University.
215 Bldg, Rm. C103 - C106. (NIST Contact: Nikolai Zhitenev, 301-975-6039, nikolai.zhitenev@nist.gov)

3/7/08 1:30 PM - CNST ELECTRON PHYSICS GROUP SEMINAR: "Revealing Magnetic Interactions From Single-Atom Magnetization Curves"
The ongoing miniaturization of magnetic devices towards the limit of single atoms calls for appropriate tools to study their magnetic properties. We demonstrate the ability to detect magnetization curves of individual magnetic atoms adsorbed on a metallic substrate using a scanning tunneling microscope with a spin-polarized tip. This enables to map tiny magnetic interactions on the atomic length scale which is evidenced by measuring the RKKY-like indirect exchange between a cobalt adatom and a cobalt nanowire on platinum(111). The method allows for future application to magnetic defects in semiconductors, in order to improve our understanding of diluted magnetic semiconductors. As a first step we will show our detailed investigation of the electronic structure of Mn acceptors in InAs.
Jens Wiebe , Dr./Scientific Staff - University of Hamburg, , jwiebe@physnet.uni-hamburg.de.
217 Bldg, Rm. H107. (NIST Contact: Joseph Stroscio, 301-975-3716, joseph.stroscio@nist.gov)

3/19/08 8:00 AM - POLYMERS DIVISION SEMINAR: Workshop on the Directed Assembly of Functional Materials and Devices
Controlling the placement of nanoscale units into designed structures and patterns through directed assembly processes answers one of the grand challenges of nanotechnology. Innovative approaches using the directed assembly of nanoscale units are being developed to facilitate the nanofabrication of new materials and applications that can incorporate biological functionality, or devices such as flexible, large-area electronics devices. Directed assembly methods provide an opportunity to overcome limitations of traditional semiconductor processing; specifically, the small materials set with which to work, restriction to two dimensional patterning, and exorbitant equipment costs. Moving directed assembly from research demonstrations to viable manufacturing processes is difficult because it requires control over the simultaneous transport, placement, and interactions of a potentially large set of nanoscale units with different size, shape, and chemical functionality. New measurements and process control methods must be developed to enable successful implementation of this groundbreaking technology. This workshop will bring together leading researchers and stakeholders from industry, government, and academia that are actively engaged in research and development of the directed assembly of nanoparticles into functional materials and devices. Through invited presentations and focused discussions, the workshop will explore and identify the most pressing measurement and technological needs to advance directed assembly as a viable manufacturing method for future nanotechnology applications.
Heiko Wolf , International Business Machines,. Haw Yang, Christopher Murray, Oleg Gang, Babak Parviz, Dan Herr, Mike Natan, Mike Bevan, Abe Stroock, Sharon Glotzer, Kate Stebe, Chong Ahn, CJ Kim, Hiroshi Matsui, Alex Tkachenko
AML, 215 Bldg, Rm. C103/106. (NIST Contact: Steven Hudson, 301-975-6579, steven.hudson@nist.gov) http://polymers.nist.gov/Directed_Assembly/Directed_Assembly_Workshop2.htm
Rooms are wheel chair accessible.

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MEETINGS ELSEWHERE


2/4 -- MONDAY

No Scheduled Events

2/5 -- TUESDAY

No Scheduled Events

2/6 -- WEDNESDAY

No Scheduled Events

2/7 -- THURSDAY

No Scheduled Events

2/8 -- FRIDAY

No Scheduled Events

ADVANCE NOTICE

No Scheduled Events

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TALKS BY NIST PERSONNEL

DOUGHERTY, D. : STM/STS STUDIES OF C60:PENTACENE INTERFACES.
The 11th Sanken International Symposium, Osaka, Japan, 2/4.

CLARK, C. (Co-Authors: A.Thompson , Ionizing Radiation Division, NIST M.Coplan , University of Maryland) ; John W. Cooper and Patrick Hughes, University of Maryland; Robert E. Vest, Electron and Optical Physics Division, NIST : OBSERVATION OF THE N(3HE,T)P REACTION BY DETECTION OF FAR-ULTRAVIOLET RADIATION.
Gaseous Electronics Meeting XV, Murramarang Resort, New South Wales, Australia, 2/5.

GOLDNER, L. : BIOMOLECULAR CONFINEMENT, MIXING, AND INTERACTIONS IN HYDROSOMES.
Biophysical Society Annual Meeting, Long Beach, CA, 2/5.

SEILER, D. (Co-Authors: C.Richter W.Rippard ) Stroscio, J : NANOELECTRONICS AT THE NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY.
NRI e-Workshop Series, Research Triangle Park, NC, 2/5.

PLUSQUELLIC, D. : THZ INVESTIGATIONS OF THE HYDROGEN BONDING NETWORKS IN CRYSTALLINE POLYPEPTIDES.
Western Spectroscopy Association, Asilomar Conference Center, Pacific Grove CA, 2/7.

YU, L. : ELECTRON-PHONON AND ELECTRON-ELECTRON INTERACTIONS IN MOLECULAR JUNCTIONS.
Department of Physics, University of Massachusetts, Amherst, Massachusetts, 2/7.

DOUGLASS, K. : APPLICATIONS OF A MEDIUM BANDWIDTH (100 MHZ) CHIRPED-PULSE FOURIER TRANSFORM MICROWAVE SPECTROMETER FOR THE STUDY OF MODEL PEPTIDE SYSTEMS.
Western Spectroscopy Association, Asilomar Conference Center, Pacific Grove CA, 2/7.

HIGHT WALKER, A. : OPTICAL CHARACTERIZATION OF NANOMATERIALS: CARBON NANOTUBES AND MAGNETIC NANOPARTICLES.
National Research Council, Ottawa, Canada, 2/8.

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ANNOUNCEMENTS

CALL FOR 2008 NOMINATIONS TO NIST PORTRAIT GALLERY
The NIST Portrait Gallery of Distinguished Scientists, Engineers and Administrators honors NBS/NIST alumni for outstanding career contributions to the work of NBS/NIST. Portraits and biographies of those selected are displayed in the corridor of the NIST cafeteria at Gaithersburg. Portraits of at most ten additional persons will be added to the Portrait Gallery in 2008. Any current or former NIST staff member may make a nomination. Nominations of alumni administrators of both programmatic and support units are welcome. Nominations are encouraged of distinguished women and minorities alumni, as well as of outstanding NBS staff members who retired before 1963. For the latter, it is understood that some requested data may no longer be available. For persons who were nominated last year, but not selected, a new nomination may be submitted. If a nominee is not selected after two successive years of nomination, the nominee will not be considered in the following year. Nomination instructions are available from the Standards Alumni Association, Room A-42 Admin, Mail Stop 0952, NIST, Gaithersburg, MD 20899-0952; telephone 301-975-2486; by email: alumni@nist.gov; or from the SAA website: www.nist.gov/director/saa. Nominations shall be received by the Standards Alumni Association on or before February 15, 2008, by mail or by email to the above addresses. No exceptions will be made to this deadline. December 2007
NIST Contact: Anneke Sengers, 301-975-2463, alumni@nist.gov

FIFTEENTH ANNUAL SIGMA XI POST-DOCTORAL POSTER PRESENTATION
The NIST Chapter of Sigma Xi announces that the Fifteenth Annual Post-Doctoral Poster Presentation will be held February 14, 2008 in Lecture Rooms A and B and in the Hall of Flags in the Administration Building. All Postdoctoral Fellows and Guest Scientists who have received their advanced degree in the last five years have been invited to present a poster on their scientific research to their NIST coworkers and friends. This year there will be two sessions: one from 9 am to 12 and the second from 1 pm to 4 pm and both will be accompanied by refreshments. Posters 1-49 will be in session one and posters 50 –97 will be in session two. All the participating Post-docs and Guest Scientists will be invited to a special reception and lunch hosted by Sigma Xi when the award for the most outstanding posters will be announced. All the abstracts of the 2008 submitted posters are now available at the NIST Sigma Xi web site: 2008 Posters\ppp2008.html or at http://www.nist.gov/sigmaxi Please plan to attend and discover the interesting research being conducted by our Post-docs and Guest Scientists and welcome them to NIST.
NIST Contact: Barbara C. Levin, 301-975-6682, barbara.levin@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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