Zobrazeno 1 - 10
of 828
pro vyhledávání: '"O'connor, Thomas P."'
Autor:
Stollenwerk, Patrick R., Southworth, Stephen H., Granato, Francesco, Renne, Amy, Mustapha, Brahim, Bailey, Kevin G., Mueller, Peter, Nolen, Jerry, O'Connor, Thomas P., Xie, Junqi, Young, Linda, Dietrich, Matthew R.
We describe a new instrument, the Argonne Auger-Meitner Radioisotope Microscope (ARM), capable of characterizing the Auger-Meitner electron emission of radionuclides, including candidates relevant in nuclear medicine. Our approach relies on event-by-
Externí odkaz:
http://arxiv.org/abs/2410.23103
Autor:
Dolata, Benjamin E., Cunha, Marco A Galvani, O'Connor, Thomas, Hopkins, Austin, Olmsted, Peter D.
Publikováno v:
ACS Macro Letters 13 (2024) 896-902
We investigate the universality of entanglement kinetics in polymer melts. We compare predictions of a recently developed constitutive equation for disentanglement to molecular dynamics simulations of both united-atom polyethylene and Kremer-Grest mo
Externí odkaz:
http://arxiv.org/abs/2407.04886
Polymers are an effective test-bed for studying topological constraints in condensed matter due to a wide array of synthetically-available chain topologies. When linear and ring polymers are blended together, emergent rheological properties are obser
Externí odkaz:
http://arxiv.org/abs/2404.15560
Autor:
Stollenwerk, Patrick R., Bailey, Kevin G., Koch, Daniel, Mueller, Peter, O'Connor, Thomas P., Zappala, Jake C., Bishof, Michael
We demonstrate excitation of metastable krypton and xenon beams using a vacuum ultraviolet lamp and directly compare the performance of this method to metastable excitation based on a radiofrequency-driven plasma discharge. In our apparatus, lamp-bas
Externí odkaz:
http://arxiv.org/abs/2404.11493
Autor:
Rabga, Tenzin, Bailey, Kevin G., Bishof, Michael, Booth, Donald W., Dietrich, Matthew R., Greene, John P., Mueller, Peter, O'Connor, Thomas P., Singh, Jaideep T.
We demonstrate laser frequency stabilization with at least 6 GHz of offset tunability using an in-phase/quadrature (IQ) modulator to generate electronic sidebands (ESB) on a titanium sapphire laser at 714 nm and we apply this technique to the precisi
Externí odkaz:
http://arxiv.org/abs/2307.07646
Publikováno v:
J. Chem. Phys. 159, 094902 (2023)
We analyze the shear response of grafted polymer chains in shear flow via coarse-grained molecular dynamics simulations. Our simulations confirm that the shear response is dominated by the brush's outermost correlation volume, which depends on shear
Externí odkaz:
http://arxiv.org/abs/2305.07737
Autor:
Zhang, Xuzhe, Wu, Yuhao, Angelini, Elsa, Li, Ang, Guo, Jia, Rasmussen, Jerod M., O'Connor, Thomas G., Wadhwa, Pathik D., Jackowski, Andrea Parolin, Li, Hai, Posner, Jonathan, Laine, Andrew F., Wang, Yun
Robust segmentation is critical for deriving quantitative measures from large-scale, multi-center, and longitudinal medical scans. Manually annotating medical scans, however, is expensive and labor-intensive and may not always be available in every d
Externí odkaz:
http://arxiv.org/abs/2303.09373
Publikováno v:
Tribol. Lett. 71, 74 (2023)
Self-mated hydrogel contacts show extremely small friction coefficients at low loads but a distinct velocity dependence. Here we combine mesoscopic simulations and experiments to test the polymer-relaxation hypothesis for this velocity dependence, wh
Externí odkaz:
http://arxiv.org/abs/2210.13921
The stretchability of polymeric materials is critical to many applications such as stretchable electronics and soft robotics, yet the stretchability of conventional cross-linked linear polymers is limited by the entanglements between polymer chains.
Externí odkaz:
http://arxiv.org/abs/2201.10498
Extensive molecular simulations are applied to characterize the equilibrium dynamics, entanglement topology, and nonlinear extensional rheology of symmetric ring-linear polymer blends with systematically varied ring fraction $\phi_R$. Chains with deg
Externí odkaz:
http://arxiv.org/abs/2107.01491