Uncertainty analysis for ac-dc difference measurements with the AC Josephson Voltage Standard [0.03%]
交流-直流差值测量的不确定度分析及AC约瑟夫森电压标准的应用
Jason M Underwood
Jason M Underwood
A detailed analysis of the uncertainties obtained in ac-dc difference measurements with an AC Josephson Voltage Standard (ACJVS) is presented. For audio frequencies and for voltages less than 200 mV, ac-dc transfers with the ACJVS may reduc...
Foreword Realization, Maintenance and Dissemination of the Kilogram in the Revised SI [0.03%]
前言 在修订后的SI中千克的实现、维护及传播
H Bettin,S Schlamminger
H Bettin
Ultra-portable field transfer radiometer for vicarious calibration of earth imaging sensors [0.03%]
便携式现场传输辐射表在地表成像传感器校验中的应用研究
Kurtis Thome,Brian Wenny,Nikolaus Anderson et al.
Kurtis Thome et al.
A small portable transfer radiometer has been developed as part of an effort to ensure the quality of upwelling radiance from test sites used for vicarious calibration in the solar reflective. The test sites are used to predict top-of-atmos...
Differentiating gold nanorod samples using particle size and shape distributions from transmission electron microscope images [0.03%]
基于透射电镜图像的金纳米棒样品的粒度和形貌分布区分方法研究
Eric A Grulke,Xiaochun Wu,Yinglu Ji et al.
Eric A Grulke et al.
Size and shape distributions of gold nanorod samples are critical to their physico-chemical properties, especially their longitudinal surface plasmon resonance. This interlaboratory comparison study developed methods for measuring and evalu...
Comparison of Bidirectional Transmittance Distribution Function (BTDF) Measurements on Fused Silica and Sintered Polytetrafluoroethylene Diffusers [0.03%]
熔融石英和烧结聚四氟乙烯扩散器的双向透射分布函数(BTDF)测量对比
James J Butler,Georgi T Georgiev,Catherine C Cooksey
James J Butler
Accurate determination of the bidirectional transmittance distribution function (BTDF) of transmissive diffusers is critical for the on-orbit spectral radiance calibration of several satellite-based, Earth remote sensing instruments. This s...
D Haddad,F Seifert,L S Chao et al.
D Haddad et al.
Using a watt balance and a frequency comb, a mass-energy equivalence is derived. The watt balance compares mechanical power measured in terms of the meter, the second, and the kilogram to electrical power measured in terms of the volt and t...
Implementation of a graphene quantum Hall Kelvin bridge-on-a-chip for resistance calibrations [0.03%]
石墨烯量子霍尔凯尔文桥芯片电阻校准测量的实现研究
Martina Marzano,Mattias Kruskopf,Alireza R Panna et al.
Martina Marzano et al.
The unique properties of the quantum Hall effect allow one to revisit traditional measurement circuits with a new flavour. In this paper we present the first realization of a quantum Hall Kelvin bridge for the calibration of standard resist...
Next-generation crossover-free quantum Hall arrays with superconducting interconnections [0.03%]
具有超导互连的下一代无交叉量子霍尔阵列
Mattias Kruskopf,Albert F Rigosi,Alireza R Panna et al.
Mattias Kruskopf et al.
This work presents precision measurements of quantized Hall array resistance devices using superconducting, crossover-free, multiple interconnections as well as graphene split contacts. These new techniques successfully eliminate the accumu...
Interlaboratory comparison of nanoparticle size measurements between NMIJ and NIST using two different types of dynamic light scattering instruments [0.03%]
NMIJ与NIST使用两种不同类型的动态光散射仪进行的纳米颗粒尺寸测量比对试验
Kayori Takahashi,John A Kramar,Natalia Farkas et al.
Kayori Takahashi et al.
The question of how to relate particle sizes measured using a fixed-angle dynamic light scattering (DLS) instrument with those measured using a multi-angle DLS instrument is addressed. A series of nearly monodisperse polystyrene latex (PSL)...
CCQM-K121 - Monoterpenes in Nitrogen at 2.5 nmol mol-1 Final Report [0.03%]
CCQM-K121 - 氮气中浓度为2.5 nmol/mol的单萜关键比对最终报告
Christina Liaskos,George Rhoderick,Joseph Hodges et al.
Christina Liaskos et al.
The growing awareness of climate change, and continuing concerns regarding tropospheric and stratospheric chemistry, will require future measurements and standards for compounds linked to these issues. To globally monitor and control the em...