NIST logo

Publications Portal

You searched on: Author: weston tew

Displaying records 31 to 40 of 57 records.
Resort by: Date / Title


31. Johnson Noise Thermometry Using a Quantum Voltage Noise Source for Calibration
Published: 6/1/2004
Authors: Sae Woo Nam, Samuel Paul Benz, Paul David Dresselhaus, Weston Leo Tew, D. R White, John M. Martinis
Abstract: We describe our progress towards a high-precision measurement of temperature using Johnson noise. Using a Quantized Voltage Noise Source (QVNS) based on the Josephson effect as a calibrated noise source, we have been able to measure the gallium and w ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=31626

32. Johnson Noise Thermometry Measurements Using a Quantized Voltage Noise Source for Calibration
Published: 4/1/2003
Authors: Sae Woo Nam, Samuel Paul Benz, Paul David Dresselhaus, Weston Leo Tew, D. R White, John M. Martinis
Abstract: We describe a new approach to Johnson Noise Thermometry(JNT) that takes advantage of recent advances in Josephson voltage standards and digital signal processing techniques. Currently, high-precision thermometry using Johnson noise is limited by the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=30118

33. A ratiometric method for Johnson noise thermometry using a quantized voltage noise source
Published: 1/1/2003
Authors: Sae Woo Nam, Samuel Paul Benz, John M. Martinis, Paul David Dresselhaus, Weston Leo Tew, D. R White
Abstract: Johnson Noise Thermometry (JNT) involves the measurement of the statistical variance of a fluctuating voltage across a resistor in thermal equilibrium. Modern digital techniques make it now possible to perform many functions required for JNT in highl ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=30325

34. Recent Results of NIST Realizations of the ITS-90 Below 84 K
Published: 1/1/2003
Authors: Weston Leo Tew, Christopher W Meyer
Abstract: The results at NIST of realizations and comparisons of the ITS-90 below 84 K are presented. The 3He and 4He vapor pressure scales (0.65 K to 5.0 K), and the interpolating constant volume gas thermometer (ICVGT) scale (5.0 K to 24.556 K) as realized f ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830804

35. The NIST Low Temperature ITS-90 Realization and Calibration Facilities
Published: 10/1/2002
Authors: Christopher W Meyer, Weston Leo Tew
Abstract: Two facilities have been constructed at NIST for realizing and maintaining the ITS-90 below 84 K. The first facility is an integrated low temperature realization system that realizes the ITS-90 below 84 K in its entirety and which we refer to as the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830798

36. A New Approach to Johnson Noise Thermometry Using a Quantum Voltage Noise Source for Calibration
Published: 6/1/2002
Authors: Sae Woo Nam, Samuel Paul Benz, Paul David Dresselhaus, Weston Leo Tew, D. R White, John M. Martinis
Abstract: We describe a new approach to Johnson Noise Thermometry (JNT) that addresses certain limitations found in the conventional approach. The concept takes advantage of recent advances in digital synthesis and signal processing techniques together with ad ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=1083

37. A New Approach to Johnson Noise Thermometry Using a Josephson Quantized Voltage Source for Calibration
Published: 4/1/2002
Authors: Samuel Paul Benz, John M Martinis, Sae Woo Nam, Weston Leo Tew, Douglas R White
Abstract: We describe a new approach to Johnson Noise Thermometry (JNT) that addresses certain limitations found in the conventional approach. The concept takes advantage of recent advances in digital synthesis and signal processing techniques together with a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830743

38. A New Approach to Johnson Noise Thermometry using a Josephson Quantized Voltage Source
Published: 4/1/2002
Authors: Samuel Paul Benz, John M. Martinis, Sae Woo Nam, Weston Leo Tew, D. R White
Abstract: We describe a new approach to Johnson Noise Thermometry (JNT) that addresses certain limitations found in the conventional approach. The concept takes advantage of recent advances in digital synthesis and signal processing techniques together with ad ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=30773

39. Standard Reference Material 1750: Standard Platinum Resistance Thermometers, 13.8033 K to 429.7485 K
Series: Special Publication (NIST SP)
Report Number: 260-139
Published: 11/1/2001
Authors: Weston Leo Tew, Gregory F Strouse
Abstract: The Standard Platinum Resistance Thermometer (SPRT) is defined by the International Temperature Scale of 1990 (ITS-90) as the interpolating instrument for temperatures between 13.8033 K and 1234.93 K. This SRM concerns the calibration properties of a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830653

40. The Role of High-purity Noble Metals in Precision Thermometry
Published: 11/1/2001
Authors: Dean C Ripple, Gregory F Strouse, Weston Leo Tew
Abstract: A variety of alternate calibration schemes which approximate the ITS-90 are possible when using high-purity noble metals. The high purity of the sensor materials allows the use of correlations that exist between the measured properties at fixed point ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830763



Search NIST-wide:


(Search abstract and keywords)


Last Name:
First Name:







Special Publications:

Looking for a NIST Special Publication (NIST SP Series)? Place the series number and dash in the report number field (Example: 800-) and begin your search.

  • SP 250-XX: Calibration Services
  • SP 260-XX: Standard Reference Materials
  • SP 300-XX: Precision Measurement and Calibration
  • SP 400-XX: Semiconductor Measurement Technology
  • SP 480-XX: Law Enforcement Technology
  • SP 500-XX: Computer Systems Technology
  • SP 700-XX: Industrial Measurement Series
  • SP 800-XX: Computer Security Series
  • SP 823-XX: Integrated Services Digital Network Series