An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Drug-checking programs use point-of-need testing (e.g., test strips) and laboratory-based analysis to rapidly identify emerging drug threats, but each has
Realization of the optical pascal has been limited by systematic errors caused by distortion of the optic. In this work, distortion error is circumvented via sy
Minyeong Kim, Andrew Winchester, Alline Myers, Edwin Heilweil, Ory Maimon, Wei-Chang Yang, Sang-Mo Koo, Qiliang Li, Sujitra Pookpanratana
β-Ga2O3 is a wide bandgap semiconductor with potential for surpassing current-generation high-power device performance and cost-effectiveness, due to its unique
Robert Ivancic, Chase Thompson, Devin Golla, Bintou Koroma, Jack Douglas, Sara Orski, Debra Audus
Branch density and length substantially impact the properties of comb-like polymers. Scientists often use the dilute solution properties of these materials to
Kushol Gupta, Nikolina Sekulic, Praveen Allu, Nicholas Sapp, Qingqiu Huang, Kathryn Sarachan, Mikkel Christensen, Reidar Lund, Susan N. Krueger, Joseph E. Curtis, Richard Gillilan, Gregory Van Duyne, Ben Black
Solution-based interrogation of the physical nature of nucleosomes has its roots in X-ray and neutron scattering experiments, including those that provided the
Accurate exhaust flow monitoring is critical to achieving accurate measurements of heat release rate during large fire experiments. Detailed characterizations
Augustin Braun, Charles Titus, Michael Baker, Max Waters, James Yan, Sang-Jun Lee, Dennis Nordlund, William Doriese, Galen O'Neil, Daniel Schmidt, Daniel Swetz, Joel Ullom, Kent Irwin, Edward Solomon
The electronic structure of oxyhemoglobin (oxyHb), the O2-bound form of the oxygen carrier, has been controversial since the discovery of its diamagnetism in
Polarization entanglement of single photons is a key element to enable quantum 2.0 applications such as quantum computing, quantum networks, and quantum sensing
Temperature changes affect the coercivity of permanent magnets, thereby impacting the $Bl$ factor and potentially introducing systematic errors in Kibble
Nicholas Derimow, Thomas Berfield, Keenan Hanson, Jake Benzing, Nikolas Hrabe
The residual stresses from controlled powder recovery blasting on electron beam powder bed fusion (PBF-EB) Ti-6Al-4V were investigated via hole drilling
Complex chalcogenides in the MPS3 family of materials (M = Mn, Fe, Co, and Ni) display remarkably different phase progressions depending upon the metal center
Evan Groopman, Todd Williamson, Timothy Pope, Michael Bronikowski, Spencer M. Scott, Matthew Wellons
We present important aspects of uranium particle age dating by Large-Geometry Secondary Ion Mass Spectrometry (LG-SIMS) that can introduce bias and increase
Huairuo Zhang, Albert Davydov, Yangang Liang, Xiaohang Zhang, Yaoyu Ren, Seunghun Lee, H.M. Jaim, Eric Marksz, Takeuchi Ichiro, Haiyan Tan, Leonid Bendersky, Chris Kucharczyk, Ruiyun Huang, Sossina Haile
We have fabricated all-thin-film solid oxide fuel cell (SOFC) heterostructures and investigated the transport properties of Sm0.2Ce0.8O2-δ (SDC20) in an out-of
Kenzington Kottenbrock, Sierra Reis, Gunjan Agarwal, Samuel Oberdick
Magnetic force microscopy (MFM) was used to characterize micropatterned clusters of superparamagnetic iron oxide nanoparticles (SPIONs). Top-down lithography
Jordan Weaver, Houshang Yin, Jesse Redford, Xiaoyuan Lou
Porosity defects and their effect on mechanical properties remain a concern in metals-based laser powder bed fusion, even for optimized process parameters
Logan Howe, Bart van Zeghbroeck, David Olaya, John Biesecker, Charles Burroughs, Peter Hopkins, Samuel Benz
Measurement of signals generated by superconducting Josephson junction (JJ) circuits require ultra-fast components located in close proximity to the generating
Yuxiang Gao, Shiming Lei, Eleanor Clememts, Yichen Zhang, Xue-Jian Gao, Songxue Chi, Kam Law, Ming Yi, Jeffrey Lynn, Emilia Morosan
The intrinsic anomalous Hall effect (AHE) has been reported in numerous ferromagnetic Weyl semimetals. However, the AHE in the antiferromagnetic (AFM) or
John Cenker, Dmitry Ovchinnikov, Harvey Yang, Daniel Chica, Catherine Zhu, Jiaqi Cai, Geoffrey Diederich, Zhaoyu Liu (刘曌玉), Xiaoyang Zhu, Xavier Roy, Ting Cao, Matthew Daniels, Jiun-Haw Chu, Di Xiao, Xiaodong Xu
Magnetic tunnel junctions (MTJs) are foundational spintronics devices with applications ranging from stable magnetic memory to emerging stochastic computing
Oscar Parades Mellone, Michael Nielsen, Jeffrey Babicz, John Vinson, Trevor Willey, Dimosthenis Sokaras
We employed cryogenic X-ray Raman spectroscopy to investigate the early-stage decomposition of the high explosive molecule hexanitrohexaazaisowurtzitane (CL-20)
Jiahui Zhang, Runbo Jiang, Kangming Li, Pengyu Chen, Xiao Shang, Zhiying Liu, Brian Simonds, Qianglong Wei, Hongze Wang, Jason Hattrick-Simpers, Tao Sun, Anthony Rollet, Yu Zou
A primary obstacle impeding the use of metal additive manufacturing technologies in fatigue-sensitive applications is the presence of porosity, primarily caused
Alexander Romanyukha, Keith Consani, Sergey Tolmachev
The United States Transuranium and Uranium Registries (USTUR) is a research program that studies actinide biokinetics in occupationally exposed individuals
Charles Patrick, Noah Schlossberger, Daniel Hammerland, Nikunjkumar Prajapati, Tate McDonald, Samuel Berweger, Rajavardhan Talashila, Alexandra Artusio-Glimpse, Christopher Holloway
We demonstrate the imaging of localized surface electric (E) field effects on the atomic spectrum in a vapor cell used in Rydberg atom-based sensors. These
Mrittunjoy Sarker, Felipe Mojica, Ami Neyerlin, Bryan Pivovar, Daniel Hussey, Jacob LaManna, David Jacobson, Po-Ya Chuang
Two types of anion exchange ionomers, powder and dispersion, are studied in this work. The gas diffusion electrode (GDE) with the dispersion-type ionomer
Faith E. Chen, Jason D. Braun, Jinyoung Seo, Hailey J. Hurd, Malia B. Wenny, Shao-Liang Zheng, Jason J. Calvin, Craig Brown, Jarad Mason
Layered materials containing hydrocarbon bilayers capable of transitioning between an ordered and partially disordered state can exhibit large temperature and
Kaixin Huang, Demitry Farfurnik, Alireza Seif, Mohammad Hafezi, Yi-Kai Liu
Qubit noise spectroscopy is an important tool for the experimental investigation of open quantum systems. However, conventional techniques for implementing
Oluwagbemiga Ojo, Wilarachchige D. C. B. Gunatilleke, Winnie Wong-Ng, Tieyan Chang, Yu-Sheng Chen, Joshua Martin, Adam Biacchi, George Nolas
The 18R polytype of SnSe2 possesses unique structural features that can directly impact the transport properties and potential applications of interest; however