A5101921083- High-pressure geophysics and materials
- Diamond and Carbon-based Materials Research
- Neutrino Physics Research
- Listeria monocytogenes in Food Safety
- Astrophysics and Cosmic Phenomena
- Medical Device Sterilization and Disinfection
- Gamma-ray bursts and supernovae
- Laser-Ablation Synthesis of Nanoparticles
- Advanced X-ray Imaging Techniques
- X-ray Spectroscopy and Fluorescence Analysis
- Organic and Molecular Conductors Research
- Solid-state spectroscopy and crystallography
- Human Pose and Action Recognition
- Adsorption, diffusion, and thermodynamic properties of materials
- Advanced Chemical Physics Studies
- Human Motion and Animation
- Advanced Materials Characterization Techniques
- Statistical Mechanics and Entropy
- Bacterial biofilms and quorum sensing
- Integrated Circuits and Semiconductor Failure Analysis
- 3D Shape Modeling and Analysis
- Pickering emulsions and particle stabilization
- Biocrusts and Microbial Ecology
- Atmospheric chemistry and aerosols
- Trauma and Emergency Care Studies
Arizona State University
2023-2024
GlobalFoundries (United States)
2022
Combat Capabilities Development Command Soldier Center
2015-2018
DEVCOM Army Research Laboratory
2007
The University of Texas at Arlington
1998
State University of New York
1986
Stony Brook University
1986
Bottom-up assembly of nanocrystals (NCs) into ordered arrays, or superlattices (SLs), is a promising route to design materials with new functionalities, but the degree control over functional structures remains challenging. Using electrostatics, rather than density, tune interactions between semiconductor NCs, we watch self-assembly proceeding through metastable liquid phase. We systematically investigate phase behavior as function quench conditions in situ and real time using small angle...
ABSTRACT Listeria monocytogenes is of great concern in food processing facilities because it persists biofilms, facilitating biotransfer. Stainless steel commonly used for contact surfaces and transport containers. L. biofilms on stainless served as a model system surface sampling, to test the performance sonicating swab comparison with standard cotton swab. Swab consistency were determined using total viable counts. coupons sampled both types swabs examined scanning electron microscopy,...
We report ultrafast x-ray scattering experiments of the quasi-1D charge density wave (CDW) material (TaSe_{4})_{2}I following infrared photoexcitation. From time-dependent diffraction signal at CDW sidebands we identify a 0.11 THz amplitude mode derived primarily from transverse acoustic high-symmetry structure. our measurements determine that this interacts with valence indirectly through another collective mode, and system in has composite nature supporting multiple dynamically active...
Noncompressible truncal hemorrhage (NCTH) after injury is associated with a mortality increase that unchanged during the past 20 years. Current treatment consists of rapid transport and emergent intervention. Three early control interventions may improve survival are placement resuscitative endovascular balloon occlusion aorta (REBOA), injection intracavitary self-expanding foam, application Abdominal Aortic Junctional Tourniquet (AAJT™). The goal this work was to ascertain whether patients...
The ability to understand and ultimately control the transformations properties of various nanoscale systems, from proteins synthetic nanomaterial assemblies, hinges on directly elucidate their dynamics characteristic length time scales. Here, we use MHz X-ray photon correlation spectroscopy (XPCS) microsecond-dynamics density fluctuations semiconductor nanocrystals (NCs), not only in a colloidal dispersion but also liquid phase consisting densely packed, yet mobile, NCs with no long-range...
Solution-phase bottom up self-assembly of nanocrystals into superstructures such as ordered superlattices is an attractive strategy to generate functional materials increasing complexity, including very recent advances that incorporate strong interparticle electronic coupling. While the kinetics in these systems have been elucidated and related product characteristics, weak bonding interactions suggest formed could continue order within solution long after primary nucleation growth occurred,...
We report ultrafast x-ray scattering experiments of the quasi-1D charge density wave (CDW) material (TaSe$_4$)$_2$I following photoexcitation with femtosecond infrared laser pulses. From time-dependent diffraction signal at CDW sidebands we identify an amplitude mode derived primarily from transverse acoustic component static distortion. The dynamics this are described well by a model displacive excitation, which interpret as mediated through coupling to optical phonon associated...
Enhancements in swabbing technology to increase sample collection efficacy would benefit the food industry. Specifically, these enhancements assist industry implementing FDA Food Safety Modernization Act (FSMA) requirements by improving environmental monitoring effectiveness. A sonicating swab device, an example of enhanced technology, was demonstrated previously remove biofilm from stainless steel more efficiently than a standard cotton swab. Within this study, performance compared that for recovery
Abstract This paper presents an approach to register a large number of adult 3D surface whole body scans and segment the knee region generate knee-specific dataset. We then applied shape analysis methods segmented surfaces obtain major variation population. analyzed 2069 male present first 5 significant modes in standing bent poses. The models were used design knee-pad for US Army.
Solution-phase bottom up self-assembly of nanocrystals into superstructures such as ordered superlattices is an attractive strategy to generate functional materials increasing complexity, including very recent advances that incorporate strong interparticle electronic coupling. While the kinetics in these systems have been elucidated and related product characteristics, weak bonding interactions suggest formed could continue order within solution long after primary nucleation growth occurred,...
Abstract When a star undergoes core collapse, vast amount of energy is released in ∼10 s long burst neutrinos all species. Inverse beta decay the star’s hydrogen envelope causes an electromagnetic cascade that ultimately results flare gamma rays—an “echo” neutrino burst—at characteristic 0.511 MeV. We study phenomenology and detectability this flare. Its luminosity curve characterized by fast, seconds-long rise equally fast decline, with minute- or hour-long plateau between. For near-Earth...
Femtosecond laser ablation is a process that bears both fundamental physics interest and has wide industrial applications. For decades, the lack of probes on relevant time length scales prevented access to highly nonequilibrium phase decomposition processes triggered by excitation. Enabled unprecedented intense femtosecond X-ray pulses delivered an free electron laser, we report here results time-resolved small angle scattering measurements dynamics nanoscale in thin gold films upon...
This paper describes measurements of the semileptonic weak-neutral-current reactions $\ensuremath{\nu}_{\ensuremath{\mu}}p\ensuremath{\rightarrow}\ensuremath{\nu}_{\ensuremath{\mu}}p$ and $\overline{\ensuremath{\nu}}_{\ensuremath{\mu}}p\ensuremath{\rightarrow}\overline{\ensuremath{\nu}}_{\ensuremath{\mu}}p$ which yield absolute differential cross sections $\frac{d\ensuremath{\sigma}(\ensuremath{\nu}_{\ensuremath{\mu}}p)}{d{Q}^{2}}$...
The spin–spin time correlation function of the spin-boson model is studied using a maximum entropy imaging procedure founded on knowledge early derivatives or moments corresponding spectral density. coherent–incoherent boundary reproduced in agreement with results dynamical path-integral Monte Carlo and shown to be stable numerically at both long low temperature.
This paper describes the application of high performance computing to prediction rate constants reactions occurring in troposphere involving toxic industrial compounds. The methods we employ use a combination quantum chemistry and dynamics calculate kinetics under investigation. Our accomplishments from past year are presented discussed.
When a star undergoes core collapse, vast amount of energy is released in ~10 s long burst neutrinos all species. Inverse beta decay the star's hydrogen envelope causes an electromagnetic cascade which ultimately results flare gamma rays - "echo" neutrino at characteristic 0.511 MeV. We study phenomenology and detectability this flare. Its luminosity curve characterized by fast, seconds-long, rise equally fast decline, with minute- or hour-long plateau between. For near-Earth (distance D<1...
A new fault detection data model was developed for High Density Plasma (HDP) SiN deposition processing to detect copper migration caused by silane (SiH<inf>4</inf>) introduction into the chamber prior step. Before development of this model, (Cu) could not be detected until electrical test. Potential product exposure high due elapsed time between occurrence and detection. The provides an automated system, reducing magnitude from repeat instances bursting.