We report on a single-state measurement of electrical conductivity of warm dense gold in the solid to plasma transition regime. This is achieved using the idealized slab plasma approach of isochoric heating of ultrathin samples by a femtosecond laser, coupled with femtosecond probe measurements of reflectivity and transmission. The experiment also reveals the time scale associated with the disassembly of laser heated solid.
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http://dx.doi.org/10.1103/PhysRevLett.92.125002 | DOI Listing |
Aust N Z J Obstet Gynaecol
January 2025
Judith Lumley Centre, School of Nursing and Midwifery, La Trobe University, Melbourne, Victoria, Australia.
Background: In Australia, during the COVID-19 pandemic many routine pregnancy visits were replaced by telehealth, along with changes to routine screening and visitor policies. Many providers plan to continue these changes.
Aims: Describe changes to maternity care provision across the state of Victoria during the COVID-19 pandemic.
Phys Rev Lett
December 2024
State Key Laboratory of Particle Detection and Electronics, Beijing 100049, Hefei 230026, People's Republic of China.
We report the precise measurements of the cross section of e^{+}e^{-}→hadrons at center-of-mass energies from 3.645 to 3.871 GeV.
View Article and Find Full Text PDFNanophotonics
June 2024
Department of Physics and Astronomy, University of Turku, Turku, Finland.
Hybridisation of the cavity modes and the excitons to polariton states together with the coupling to the vibrational modes determine the linear optical properties of organic semiconductors in microcavities. In this article we compute the refractive index for such system using the Holstein-Tavis-Cummings model and determine then the linear optical properties using the transfer matrix method. We first extract the parameters for the exciton in our model from fitting to experimentally measured absorption of a 2,7-bis[9,9-di(4-methylphenyl)-fluoren-2-yl]-9,9-di(4-methylphenyl) fluorene (TDAF) molecular thin film.
View Article and Find Full Text PDFJ Chem Phys
November 2024
Maxwell Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom.
The calculation of the interfacial free energy between two thermodynamic phases is crucial across various fields, including materials science, chemistry, and condensed matter physics. In this study, we apply an existing thermodynamic approach, the Gibbs-Cahn integration method, to determine the interfacial free energy under different coexistence conditions, relying on data from a single-state calculation at specified pressure and temperature. This approach developed by Laird et al.
View Article and Find Full Text PDFDis Colon Rectum
November 2024
Department of Surgery, University of Wisconsin-Madison, Madison, Wisconsin.
Background: Patients in rural areas have reduced colonoscopy access, which is critical for colorectal cancer prevention. General surgeons perform most colonoscopies in rural areas. The Surgical Collaborative of Wisconsin's Rural Task Force identified colonoscopy as a high priority initiative due to high volume and lack of quality measure access, both necessary for assessing and improving performance.
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