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Search Publications by: C Cameron Miller (Fed)

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Displaying 1 - 25 of 87

Far-UVC: The impact of optical filters on real-world deployment

July 20, 2024
Author(s)
C Cameron Miller, Ewan Eadie, Paul O'Mahoney, Sally Ibbotson, Kenneth Wood
In 2015, a study showed that Krypton-Chloride (KrCl) excimer lamps could induce erythema and basal layer DNA damage in human skin. Later studies found that filtering out longer wavelength emissions from these lamps resulted in no acute skin effects

Maximum Luminous Intensity of LED-lighted X signs for Airport Runways

June 12, 2024
Author(s)
Yoshi Ohno, Maritoni Litorja, C Cameron Miller
This is a report for Inter-agency agreement 693KA9-18-N-00023 "Maximum Luminous Intensity for LED Signaling in an Airport Environment" by Federal Aviation Administration (FAA) and National Institute of Standards and Technology (NIST). The LED-based lighted

Influence of Spectral Bandwidth on the Working Curve in Vat Photopolymerization

April 29, 2024
Author(s)
Benjamin Caplins, Thomas Kolibaba, Uwe Arp, C Cameron Miller, Yuqin Zong, Dianne L. Poster, Callie Higgins, Jason Killgore
In vat photopolymerization, 3-dimensional parts are fabricated by using patterned light to spatially cure a liquid resin. One of the foundational measurements for vat photopolymerization is known as the working curve whereby the depth (i.e. thickness) of

Results of an Interlaboratory Study on the Working Curve in Vat Photopolymerization

March 18, 2024
Author(s)
Thomas Kolibaba, Jason Killgore, Benjamin Caplins, Callie Higgins, Uwe Arp, C Cameron Miller, Yuqin Zong, Dianne L. Poster
The working curve informs resin properties and print parameters for stereolithography, digital light processing, and other photopolymer additive manufacturing (PAM) technologies. First demonstrated in 1992, the working curve measurement of cure depth vs

Characterizing light engine uniformity and its influence on LCD-based vat photopolymerization printing

December 27, 2022
Author(s)
Benjamin Caplins, Callie Higgins, Thomas Kolibaba, Uwe Arp, C Cameron Miller, Dianne L. Poster, Clarence Zarobila, Yuqin Zong, Jason Killgore
Vat photopolymerization (VP) is a rapidly growing category of additive manufacturing. As VP methods mature the expectation is that the quality of printed parts will be highly reproducible. At present, detailed characterization of the light engines used in

Workshop Report: Standards and Performance Metrics for On-Road Autonomous Vehicles

October 27, 2022
Author(s)
Craig I. Schlenoff, Suzanne Lightman, Vinh Nguyen, Prem Rachakonda, Tao Zhang, Omar Aboul-Enein, Nicholas Barbosa, C Cameron Miller, Daniel Sawyer, Ann Virts
On-road autonomous vehicles are expected to significantly influence key aspects of everyday life. However, these complex systems can pose a safety risk in the event of unexpected system performance. Therefore, NIST held the Standards and Performance

Unique collaboration produces LM-92 UV LED testing standard

July 27, 2022
Author(s)
C Cameron Miller, Jeff Hulett, Troy Cowan
JEFF HULETT, CAMERON MILLER, and TROY COWAN detail the importance of cross-organization participation in UV standards development and how those joint efforts will further market penetration and performance of GUV devices.

NIST Traveling Tunable Laser Projector (TTLP) for UV-Blue Disinfection Dose Determinations

June 21, 2022
Author(s)
Thomas C. Larason, Steven Grantham, Clarence Zarobila, Yuqin Zong, C Cameron Miller, Michael Schuit, Brian Holland, Stewart Wood, Melissa Krause
As COVID-19 was overtaking the world in the spring of 2020, the National Institute of Standards and Technology began collaborating with the National Biodefense Analysis and Countermeasures Center to study the inactivation of SARS-CoV-2 to different UV and

Final report on the CCPR Key Comparison CCPR-K3.2014 Luminous Intensity

June 16, 2022
Author(s)
C Cameron Miller, Yuqin Zong, Arnold Gaertner, Eric Cote, Joaquin Campos, Gael Obein, Peter Blattner, Reto Scafer, Liu Hui, Jiang Xiaomei, Errol Atkinson, Erik Thorvaldson, Kenichi Kinoshita, Rheinhardt Sieberhagen, Irma Rabe, Teresa Goodman, Barry Scott, Armin Sperling, Detlef Lindner, Boris KHlevnoy, Evgeniy Ivashin
The metrological equivalence of national measurement standards in the field of photometry and radiometry is determined by a set of key comparisons chosen and organized by the Consultative Committee of Photometry and Radiometry (CCPR) of the Comité

Disinfection of Respirators with Ultraviolet Radiation

March 25, 2022
Author(s)
Dianne L. Poster, Matthew Hardwick, C Cameron Miller, Michael A. Riley, W. W. Shanaka I. Rodrigo, Andras E. Vladar, John D. Wright, Christopher D. Zangmeister, Clarence Zarobila, Jeremy Starkweather, John Wynne, Jason Yilzarde
Data for interpreting virus inactivation on N95 face filtering respirators (FFRs) by ultraviolet (UV) radiation are important in developing UV strategies for N95 FFR disinfection and reuse for any situation, whether it be everyday practices, contingency

Models for an Ultraviolet-C Research and Development Consortium

March 25, 2022
Author(s)
Dianne L. Poster, C Cameron Miller, Yaw S. Obeng, John J. Kasianowicz, Michael T. Postek, Norman Horn, Troy Cowan, Richard Martinello
The development of an international, precompetitive, collaborative, ultraviolet (UV) research consortium is discussed as an opportunity to lay the groundwork for a new UV commercial industry and the supply chain to support this industry. History has

Ultraviolet Radiation Technologies and Healthcare Associated Infections: Standards and Metrology Needs

August 20, 2021
Author(s)
Dianne L. Poster, C Cameron Miller, Richard Martinello, Norman Horn, Michael T. Postek, Troy Cowan, Yaw S. Obeng, John J. Kasianowicz
The National Institute of Standards and Technology (NIST) hosted an international workshop on ultraviolet-C (UV-C) disinfection technologies on January 14 – 15, 2020 in Gaithersburg, Maryland in collaboration with the International Ultraviolet Association

NVLAP Energy Efficient Lighting Products

July 6, 2021
Author(s)
Timothy Rasinski, C Cameron Miller
NIST Handbook 150-1, NVLAP Energy Efficient Lighting Products, presents the technical requirements and guidance for the accreditation of laboratories under the NVLAP Energy Efficient Lighting Products LAP.

CALIBRATION OF SPECTRORADIOMETERS USING TUNABLE LASERS

April 22, 2021
Author(s)
Yuqin Zong, Ping-Shine Shaw, Joseph Rice, C Cameron Miller
To shorten the long calibration chain when using the conventional source-based approach and therefore to reduce spectroradiometer's calibration uncertainty, we developed a detector-based approach to calibrate spectroradiometers directly against a transfer

Recent research and development in photometry at NIST

April 22, 2021
Author(s)
Yuqin Zong, Maria Nadal, Benjamin K. Tsai, C Cameron Miller
Many developments were made in recent years in photometry at NIST for reducing measurement uncertainties, increasing calibration efficiencies, and adding measurement capabilities. The 40 years old photometry laboratory has been renovated. The new

STANDARD LEDS WITH SUPERIOR LONG-TERM STABILITY

April 22, 2021
Author(s)
Yuqin Zong, Weiqiang Zhao, C Cameron Miller
A large-chip standard LED with superior long-term stability have been developed at NIST. The standard LED uses a large, specialty die rated for 50 W but is operated under 3 W to eliminate aging effect. The standard LED was seasoned for one year and

Effect of Teflon(R) Transmittance on Sensitivity of Thermoluminescence Dosimeter Cards

May 20, 2020
Author(s)
Vyacheslav B. Podobedov, Carl C. Miller, Alexander Romanyukha, Andrew Hoy
Thermoluminescence dosimeter cards purchased by the United States Navy in recent years have different radiation sensitivities, e.g. they exhibit a different amount of light per dose unit. Presented tests indicate that the optical transparency of the Teflon

INNOVATIVE APPROACH TO COMBAT HEALTHCARE-ASSOCIATED INFECTIONS USING STANDARDS DEVELOPED THROUGH INDUSTRY AND U.S. FEDERAL COLLABORATION

June 14, 2019
Author(s)
Carl C. Miller, Thomas C. Larason, Dianne L. Poster, Yaw S. Obeng, Mike Postek, Richard Martinello
Nationwide, healthcare-associated infections (HAIs) infect one in every 25 hospital patients, account for more than 99,000 deaths and increase medical costs by more than $35 billion, each year. Ultraviolet-C (UV-C) antimicrobial devices are shown to reduce

NIST Handbook 150-1, NVLAP Energy Efficient Lighting Products

February 14, 2019
Author(s)
C Cameron Miller, Timothy Rasinski
NIST Handbook 150-1, NVLAP Energy Efficient Lighting Products, presents the technical requirements and guidance for the accreditation of laboratories under the NVLAP Energy Efficient Lighting Products LAP. The 2018 revision aligns this handbook with the

Gain Calibration of Current-to-Voltage Converters

November 19, 2018
Author(s)
Thomas C. Larason, Carl C. Miller
Current-to-voltage converters are used in many photometric and radiometric applications. The calibration of current- to-voltage converters at a few input currents is not always sufficient to understand the linearity and the bias of a device. Many devices

Innovative Approaches to Combat Healthcare-Associated Infections Using Efficacy Standards Developed Through Industry and Federal Collaboration

October 5, 2018
Author(s)
Dianne L. Poster, Carl C. Miller, Yaw S. Obeng, Michael T. Postek, Troy E. Cowan, Richard A. Martinello
Nation-wide, healthcare-associated infections (HAIs) infect one in every 25 hospital patients, account for more than 100,000 deaths and increase medical costs by around $96-147B, each year. Ultraviolet-C (UV-C) antimicrobial devices are shown to reduce the

NIST Measurement Services: Photometric Calibrations

July 10, 2018
Author(s)
Carl C. Miller, Maria E. Nadal, Benjamin K. Tsai, Yuqin Zong
The National Institute of Standards and Technology provides calibration services for submitted artifacts for luminous intensity, illuminance, color temperature, total luminous flux, luminous exposure and luminance. Additionally, the National Institute of

NIST Handbook 150-1, NVLAP Energy Efficient Lighting Products, 2017 Revision

March 28, 2017
Author(s)
C Cameron Miller, Timothy Rasinski
The NIST Handbook 150 publication series sets forth the procedures, requirements, and guidance for the accreditation of testing and calibration laboratories by the National Voluntary Laboratory Accreditation Program (NVLAP). NIST Handbook 150-1, NVLAP

Broadband Radiometric LED Measurements

September 6, 2016
Author(s)
George P. Eppeldauer, P. Yvonne Barnes, Howard W. Yoon, Leonard Hanssen, Vyacheslav B. Podobedov, Robert E. Vest, Uwe Arp, C Cameron Miller
At present, broadband radiometric measurements of LEDs with uniform and low-uncertainty results are not available. Currently, either spectral radiometric measurements or broadband photometric LED measurements are used. The broadband photometric