NIST Technicalendar February 13 to February 17, 2012 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)

Also available: Previous Issues of the Technicalendar Quick Technicalendar (current) Last week's Quick Technicalendar Last week's Technicalendar Detailed Search NIST Journal of Research (Current TOC) Change User Options

10:45 AM - Neutron Scattering Studies of Bulk and Confined Liquids: Understanding Glass-Formation and Applications in Environment, Energy and Drug-Delivery

10:30 AM - Quantum Measurement Division Seminar: Applied Electrical Metrology Group
10:30 AM - Nanotechnology Research for the Advanced Energy Consortium
10:45 AM - Gas Dynamics in High-Luminosity Polarized He-3 Targets Using Diffusion Convection

No Scheduled Events

10:45 AM - pH Responsiveness of PAMAM Dendrimer - Structure and Dynamics

No Scheduled Events

2/13 -- MONDAY

10:45 AM - NIST CENTER FOR NEUTRON RESEARCH SEMINAR: Neutron Scattering Studies of Bulk and Confined Liquids: Understanding Glass-Formation and Applications in Environment, Energy and Drug-Delivery
The speaker used quasi-elastic neutron scattering (QENS) to understand atomic/molecular relaxation processes in bulk and confined liquids to address the issues related to glass-formation and application for environmental, energy storage and drug-delivery research. Regarding glass-formation, he will present QENS results on metallic glass-forming melts. Next, he will discuss recent results on the dynamics of methane and carbon dioxide in nano-porous carbon aerogel and their implications for CO2 sequestration. Finally, he will discuss the dynamics of confined room-temperature ionic liquids and its relevance in energy storage and QENS studies of a drug-delivery system.
Suresh Chathoth , Oak Ridge National Laboratory.
235 Bldg, Rm. K04B. (NIST Contact: John Copley, 301-975-5133, john.copley@nist.gov)


2/14 -- TUESDAY

10:30 AM - PHYSICAL MEASUREMENT LABORATORY OFFICE SEMINAR: Quantum Measurement Division Seminar: Applied Electrical Metrology Group
The Applied Electrical Metrology Group provides U.S. industry with the essential links between ac voltage, current, power, and energy and NIST-realized SI standards. We have a legacy of supporting the electric power industry since its infancy through research and measurement services for devices used for monitoring the power grid such as instrument transformers, and electric power and energy meters. The Group continues to support the industry today in measurements of synchrophasors that are used for monitoring real-time power grid conditions, and in standards developed for the Smart Grid. We also provide the link between ac voltage and the corresponding dc electrical standards through cutting-edge research and development in ac-dc difference measurement. This seminar will provide an overview of the people and activities of the AEM Group, including how we now employ quantum-based standards in the dissemination of electrical quantities.
Gerald FitzPatrick , Applied Electrical Metrology Group Leader.
AML 215 Bldg, Rm. C103-106. (NIST Contact: Gerald FitzPatrick, 301-975-8922, gerald.fitzpatrick@nist.gov)

10:30 AM - CNST NANOFABRICATION RESEARCH GROUP SEMINAR: Nanotechnology Research for the Advanced Energy Consortium
The Advanced Energy Consortium (AEC) members (BG, BP, ConocoPhillips, Halliburton, Petrobras, Schlumberger, Shell, and Total) are fund and direct a multi-million $ collaborative effort in order to coordinate research projects which will accelerate the development of novel micro- and nanomaterial sensing technologies for oil exploration and recovery. This so-called "nanorealm" is so small and unexplored that it has never been seriously considered by most petroleum engineers, geophysicists, geologists, or geochemists. Given the heterogeneous nature of oil field rocks and fluids, and the harshness of the environment (high temperatures, high pressures, small pore spaces [30nm to 10µm], high salinity, and acidic conditions), this is a challenging and exciting proposition. In this talk I will give an overview of the three major technology research focus areas: 1) Contrast Agents 2) Nanomaterial Sensors 3) Microfabricated Sensors In addition, there is a collection of projects that address the critical and common need to enable particle/sensor transport deep into the reservoir. Issues include stability (lifetime) and transport (minimizing retention) enabled through coatings and/or custom synthesis.
Mohsen Ahmadian , AEC- Project Manager for the Contrast Agent and Nanomaterial Sensors,.
217 Bldg, Rm. H107C. (NIST Contact: J. Alex Liddle, 301-975-6050, james.liddle@nist.gov)

10:45 AM - NIST CENTER FOR NEUTRON RESEARCH SEMINAR: Gas Dynamics in High-Luminosity Polarized He-3 Targets Using Diffusion Convection
The dynamics of the movement of gas is discussed for two-chambered polarized 3He target cells of the sort that have been used successfully for many electron-scattering experiments. A detailed analysis is presented showing that diffusion is a limiting factor in target performance, particularly as these targets are run at increasingly high luminosities. Measurements are presented on a new prototype polarized 3He target cell in which the movement of gas is due largely to convection instead of diffusion. Nuclear magnetic resonance tagging techniques have been used to visualize the gas flow, showing velocities along a cylindrically shaped target of between 5 and 80 cm/min. The new target design addresses one of the principle obstacles to running polarized 3He targets at substantially higher luminosities while simultaneously providing new flexibility in target geometry.
Peter Dolph , University of Virginia.
235 Bldg, Rm. K04B. (NIST Contact: Thomas Gentile, 301-975-5431, thomas.gentile@nist.gov)


2/15 -- WEDNESDAY

No Scheduled Events

2/16 -- THURSDAY

10:45 AM - NIST CENTER FOR NEUTRON RESEARCH SEMINAR: pH Responsiveness of PAMAM Dendrimer - Structure and Dynamics
The speaker investigated the structure and dynamics of poly(amidoamine) (PAMAM) dendrimer as a function of molecular protonation in aqueous (D2O) solution. A series of small-angle neutron scattering (SANS) and small-angle X-ray scattering (SAXS) experiments were conducted and the results show a slight consequent increase of the molecular size, which is less clear for low and medium generation (G3 to G6) dendrimers and more noticeable for high generations (G7 and G8). A continuous variation of the intramolecular density profile upon increasing molecular protonation is also revealed. A combined quasi-elastic neutron scattering (QENS) and high-resolution solution NMR spectroscopy study was carried out and exhibits that the local motion of the dendrimer segments becomes more rapid upon the increased charge. Counterion valence has a strong impact on these charge-induced behaviors, and the structured confined water within the dendrimer makes a significant contribution to the scattering functions. The interpretations of the pH responsiveness are discussed based on the comparison between atomistic molecular dynamics (MD) simulation and experimental results.
Xin Li , Indiana University.
235 Bldg, Rm. K04B. (NIST Contact: John Copley, 301-975-5133, john.copley@nist.gov)


2/17 -- FRIDAY

No Scheduled Events

ADVANCE NOTICE

2/24/12 1:30 PM - CNST NANOFABRICATION RESEARCH GROUP SEMINAR: Strong Control Through Weak Bonds: New Strategies for Specific Recognition, Self-Organization and Self-Replication in Man-Made Materials
In this lecture, I will focus on the exciting new possibilities that synthetic DNA offers for the creation of self-organizing and self-replicating materials of nano- and micro-particles. DNA 'sticky ends' with complementary nucleotide sequences, for instance, form highly specific and reversible links between the particles. Besides their application in directed self-assembly, I will discuss the intriguing physics and broader implications of such (collections of) weak ligand-receptor-like bonds.
Mirjam Leunissen , Scientific Group Leader/Foundation for Fundamental Research on Matter, AMOLF institute, Utrecht, The Netherlands.
217 Bldg, Rm. H107C. (NIST Contact: J. Alex Liddle, 301-975-6050, james.liddle@nist.gov)

3/6/12 8:30 AM - INTELLIGENT SYSTEMS DIVISION SEMINAR: HBM tutorials and demonstrations of strain, force, and data acquisition technologies
Four representatives from HBM (www.hbm.com) will give tutorials and demonstrations of strain, force, and data acquisition technologies. 8:30 – 09:30 Strain gauge basics (types, adhesives, coatings, wheatstone bridge circuit, temperature compensation, installation). A Live demonstration on proper installation of metal foil strain gauges on different materials. 10:00 – 11:30 Fundamentals of optical strain measurement using Fibre Bragg Gratings. 11:30 – 12:00 Force Measurement (Fiber Bragg, load cell compensation, Z4 precision force transducers). 1:00 – 2:00 Overview of HBM data acquisition systems (GENESIS, QuantumX, EspressoDAQ, DMP40). 2:00 – 4:00 Depending on audience preference, discussion, demonstrations, or tutorials.
Jonathan Fazli , HBM. Dirk Eberlein, Krista Tweed, Thomas Klecker
Administration Bldg, Lecture Rm. B. (NIST Contact: Eric Whitenton, 301-975-6006, Eric.Whitenton@Nist.Gov)

---

MEETINGS ELSEWHERE


2/13 -- MONDAY

No Scheduled Events

2/14 -- TUESDAY

No Scheduled Events

2/15 -- WEDNESDAY

No Scheduled Events

2/16 -- THURSDAY

No Scheduled Events

2/17 -- FRIDAY

No Scheduled Events

ADVANCE NOTICE

No Scheduled Events

---

TALKS BY NIST PERSONNEL

BOSSE, A. : MODELS FOR THE POWER SPECTRA OF THERMAL COMPOSITIONS FLUCTUATIONS AND LINE-EDGE ROUGHNESS IN AN ORDERED LAMELLAR DIBLOCK COPOLYMER MELT.
SPIE Advanced Lithography Meeting, San Jose, CA, 2/14.

CLARK, C. : THE OTHER WORLD SEEN BY ANIMALS.
College of Sciences and Technology Public Lecture, Western Washington University, Bellingham, WA, 2/15.

WU, W. : CHARACTERIZATION OF CROSS-SECTIONAL PROFILE OF EPITAXIALLY ASSEMBLED BLOCK COPOLYMER DOMAINS USING TRANSMISSION SMALL ANGLE X-RAY SCATTERING.
SPIE Advanced Lithography Conference, San Jose, CA, 2/15.

MITCHELL, W. : EXPERIENCE WITH MPI AND OPENMP IN AN ADAPTIVE FEM CODE.
SIAM Conference on Parallel Processing for Scientific Computing, Savannah, GA, 2/16.

CLARK, C. : NEXT-GENERATION ATOMTRONICS.
Annual Meeting of the American Association for the Advancement of Science, Vancouver, BC, 2/18.

WU, W. : GRAZING INCIDENT SCATTERING OF NANOPATTERNS.
XMAG Meeting, Napa, CA, 2/18.

---

ANNOUNCEMENTS

SIGMA XI 19TH ANNUAL POSTDOCTORAL POSTER PRESENTATION
The NIST Chapter of Sigma Xi invites all NIST Scientists to attend the 19th Annual Postdoctoral Poster Presentation at which NIST Postdocs and Guest Researchers will present posters on their research to their NIST coworkers and friends. There will be two sessions – Session I from 9 am until noon, which will feature posters on the topics of Materials, Biotechnology, Engineering, and Mathematics, and Session II – from 1 pm until 4 pm, which will feature posters on the topics of Chemistry, Physics, Biology, and Polymers. Both sessions will take place on February 22, 2012 in Lecture Rooms A and B and the adjoining hallway in the Administration Building (the Hall of Flags), and will be accompanied by refreshments. All of the participating Postdocs and Guest Researchers will be invited to a special reception on February 24 when the awards for the Most Outstanding Posters will be announced. These posters will be displayed in the Hall of Flags for two weeks following the announcement of the awards. Please come and support our NIST Postdocs and Guest Researchers. For more information, please contact Magdalena Navarro (301-975-2130 or mnavarro@nist.gov), or Douglas Meier (301-975-4619 or douglas.meier@nist.gov). Visitors to NIST who will need to arrange a temporary badge should contact Katya Delak (301-975-2520 or katya.delak@nist.gov).
NIST Contact: Douglas Meier, 301-975-4619, dmeier@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: . ., ., .

---

NIST WEB SITE ANNOUNCEMENTS

No Web Site announcements this week.

---

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.

---

NVL Webmaster