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Displaying 301 - 325 of 143797

JBO Special Issue on Hyperspectral Imaging

March 4, 2025
Author(s)
Baowei Fei, Jeeseong Hwang, Matija Milanic
The editors introduce a Journal of Biomedical Optics (JBO) feature issue on "Hyperspectral imaging." The special issue features a number of important research and review papers on new hyperspectral imaging and detection devices and associated technologies

Modulated Laser Thermal Interrogation (MLTI): A Novel In Situ Metal Powder Evaluation Technique for Laser Powder Bed Fusion

March 1, 2025
Author(s)
Sina Ghadi, Xiaobo Chen, Nicholas Tomasello, Nicholas Derimow, Srikanth Rangarajan, Guangwen Zhou, Scott Schiffres
Assessment of metal powders in powder bed additive manufacturing is crucial, as the quality of the powders significantly impacts the final printed parts. This study introduces a novel technique to characterize metal powders by analyzing changes in their

SLowFlowS: A novel flow standard for semiconductor process gases

March 1, 2025
Author(s)
Jodie Gail Pope, Keith A. Gillis, Aaron Johnson, Joey Boyd, John Wright
Numerous process gases are used in the production of semiconductor chips. Accurate metering of these gases into process chambers is critical for maximizing device throughput and yield. A national flow standard for semiconductor process gases does not exist

High-endurance bulk CMOS one-transistor cryo-memory

February 28, 2025
Author(s)
Alexander Zaslavsky, Pragya Shrestha, Valery Ortiz Jimenez, Jason Campbell, Curt Richter
Previously we reported a compact one-transistor (1T) 180 nm bulk CMOS cryo-memory with a high 10^7 I_1/I_0 memory window and long 800 s retention time based on impact-ionization-induced charging of the transistor body. Here, we present the endurance and

An Accurate Determination of O2 A-band Line Intensities through Experiment and Theory

February 27, 2025
Author(s)
Erin Adkins, Sergei Yurchenko, Wilfrid Somogyi, Joseph Hodges
Accurate intensities of the O2 A-band 〖[b〗^1 Σ_g^+⟵X^3 Σ_g^- (0,0)] centered about 760 nm are essential to reduce biases in satellite- and ground-based remote measurements of column-integrated air mass and greenhouse gas concentration. In support of these

Product ion distributions using H3O+ proton-transfer-reaction time-of-flight mass spectrometry (PTR-ToF-MS): mechanisms, transmission effects, and instrument-to-instrument variability

February 27, 2025
Author(s)
Michael Link, Megan Claflin, Christina Cecelski, Ayomide Akande, Delany Kilgour, Paul Heine, Matthew Coggon, Chelsea Stockwell, Andrew Jensen, Jie Yu, Han Huyhn, Jenna Ditto, Carnsten Warneke, William Dresser, Keighan Gemmell, Spiro Jorga, Rileigh Robertson, Joost de Gouw, Timothy Bertram, Jonathan Abbatt, Nadine Borduas-Dedekind, Dustin Poppendieck
Proton-transfer-reaction mass spectrometry (PTR-MS) using hydronium ion (H3O+) ionization is widely used for the measurement of volatile organic compounds (VOCs) both indoors and outdoors. H3O+ ionization, as well as the associated chemistry in an ion

Hydrophobic Metal-Formate Composites for Efficient CO 2 Capture

February 26, 2025
Author(s)
Rajesh Das, He Li, Hayden Evans, Zeyu Deng, Dan Zhao, Anthony K. Cheetham
Carbon capture, utilization, and sequestration (CCUS) have emerged as pivotal mitigation strategies in addressing climate change induced by greenhouse gas emissions. In this pursuit, our objective is to enhance the efficacy of adsorptive CO2 capture by

Leakage Current Pathways in Josephson Arbitrary Waveform Synthesizer Standards

February 26, 2025
Author(s)
Raegan Johnson, Jesus Mejia, Alain Rufenacht, Anna Fox, Nathan Flowers-Jacobs, Frederic Overney, Paul Dresselhaus, Samuel Benz
The voltage errors related to ac leakage currents in Josephson arbitrary waveform synthesizer (JAWS) systems are significant contributors to the overall system accuracy. These ac leakage currents flow through paths (typically to ground) that are not part

Prioritizing Cybersecurity Risk for Enterprise Risk Management

February 26, 2025
Author(s)
Stephen Quinn, Nahla Ivy, Matthew Barrett, Greg Witte, Robert Gardner
This document is the second in a series that supplements NIST Interagency Report (IR) 8286, Integrating Cybersecurity and Enterprise Risk Management (ERM). This series provides additional detail regarding the enterprise application of cybersecurity risk

Using Business Impact Analysis to Inform Risk Prioritization and Response

February 26, 2025
Author(s)
Stephen Quinn, Nahla Ivy, Julie Anne Chua, Matthew Barrett, Larry Feldman, Daniel Topper, Greg Witte, Robert Gardner
While business impact analysis (BIA) has historically been used to determine availability requirements for business continuity, the process can be extended to provide a broad understanding of the potential impacts of any type of loss on the enterprise

A Security Perspective on the Web3 Paradigm

February 25, 2025
Author(s)
Dylan Yaga, Peter Mell
Web3 is a proposed vision for the future of the internet that is restructured to be more user-centric with an emphasis on decentralized data. Users would own and manage their personal data, and systems would be decentralized and distributed. Digital tokens

Don't Use LLMs to Make Relevance Judgments

February 25, 2025
Author(s)
Ian Soboroff
Making the relevance judgments for a TREC-style test collection can be complex and expensive. A typical TREC track usually involves a team of six contractors working for 2-4 weeks. Those contractors need to be trained and monitored. Software has to be

Kolmogorov turbulence in atomic Bose-Einstein condensates

February 25, 2025
Author(s)
Ian Spielman, Mingshu Zhao, Junheng Tao
We investigated turbulence in atomic Bose-Einstein condensates (BECs) using a minimally destructive, impurity injection technique analogous to particle image velocimetry in conventional fluids. Our approach transfers small regions of the BEC into a

Measurement resolution enhanced coherence for lattice fermions

February 25, 2025
Author(s)
Ian Spielman, Hilary Hurst, Yik Teoh
Weak measurement enables the extraction of targeted information from a quantum system while minimizing decoherence due to measurement backaction. However, in many-body quantum systems backaction can have unexpected effects on wavefunction collapse. We

System Vicarious Calibration for climate and global long-term operational ocean color applications

February 25, 2025
Author(s)
Giuseppe Zibordi, B. Carol Johnson, Ewa Kwiatkowska, Kenneth Voss, David Antoine, Sean William Bailey, Andrew Barnard, Brian Barnes, Agnieszka Bialek, Shuguo Chen, Susanne Craig, Constant Mazeran, FREDERIC MELIN, Jee-Eun Min, Hiroshi Murakami, Menghua Wang
System Vicarious Calibration (SVC) enhances the accuracy of satellite ocean color radiometric data products by removing the bias due to the intrinsic inaccuracies affecting both the responsivity of the space sensor and the correction for the atmospheric

Compressed Liquid (p-r-T) Measurements of trans-1,2-Dichloroethene [R1130(E)]

February 24, 2025
Author(s)
Tara Fortin, Stephanie Outcalt
Pressure-density-temperature (p-ρ-T) data for the refrigerant R-1130(E) (trans-1,2-dichloroethene) were measured in the compressed liquid phase using an automated vibrating tube densimeter. Overall, the measurements covered temperatures from 270 K to 410 K
Displaying 301 - 325 of 143797
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