Category: 4. Physics
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Angle-Preserving Transformations Give Rigidity Transitions a New Twist
Jen Schwarz1 and Silke Henkes2 1Department of Physics, Syracuse University, Syracuse, NY 2Institute of Physics, Leiden University, Leiden, Netherlands January 2, 2024• Physics 17, 1 New theoretical work explores the onset of rigidity in granular materials and other disordered systems by mapping out the edges of rigid regions. S. Henkes/Leiden University; J. Schwarz/Syracuse University; APS/A.…
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Understanding the light induced hydrophilicity of metal-oxide thin films
The transition metal oxides (MOx), titanium dioxide (TiO2), and zinc oxide (ZnO), belong to a class of wide-bandgap natively doped n-type semiconductors1,2 with several remarkable and widely studied properties3,4,5,6. The reported applications of TiO2 and ZnO surfaces date back several decades and comprise solar energy conversion by single-crystal electrodes for water splitting7,8,9, photocatalytic reduction of…
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Quantitative MRI-based radiomics analysis identifies blood flow feature associated to overall survival for rectal cancer patients
Figure 1 provides a flowchart detailing the input of MRI parameters and tumor volumes to the radiomics model as well as how radiomics features were extracted and used in outcome analysis together with clinical parameters. Figure 1 Flowchart illustrating the input to the radiomics analysis consisting of different MRI parameters and different methods to define the…
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Single-emitter super-resolved imaging of radiative decay rate enhancement in dielectric gap nanoantennas
Novotny, L. & Hecht, B. Principles of Nano-Optics. (New York: Cambridge University Press, 2012). Novotny, L. & van Hulst, N. Antennas for light. Nat. Photon 5, 83–90 (2011). Article ADS Google Scholar Duan, H., Fernández-Domínguez, A. I., Bosman, M., Maier, S. A. & Yang, J. K. W. Nanoplasmonics: classical down to the nanometer scale. Nano…
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Numerical analysis of the porous structure of spherical activated carbons obtained from ion-exchange resins
The results of the analyses carried out using the LBET and QSDFT methods are summarised in Tables 1, 2, 3, 4 and shown in Figs. 1, 2, 3, 4. In the first part of the study, the structure analysis of spherical activated carbons obtained from microporous gel-type resin beads prepared from DOWEX 50WX2 microporous gel (GCB)…
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Isotope engineering for spin defects in van der Waals materials
Optimal isotopes of hBN We start with identifying the optimal isotope species in hBN for the embedded \({{{{{{{{\rm{V}}}}}}}}}_{{{{{{{{\rm{B}}}}}}}}}^{-}\) defects. The \({{{{{{{{\rm{V}}}}}}}}}_{{{{{{{{\rm{B}}}}}}}}}^{-}\) center harbors an electronic spin triplet ground state, \(\left|{m}_{s}=0,\pm 1\right\rangle\), which can be optically initialized and read out at room temperature18. The Hamiltonian of the system, including both the electronic degree of freedom and…
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Parity-conserving Cooper-pair transport and ideal superconducting diode in planar germanium
Material characterization and Josephson junctions Compressively strained Ge QWs have been deposited on relaxed, linearly graded buffers with 70% Ge content. The 18 nm thick QWs are separated from the top surface by a spacer of thickness D. The built-in in-plane compressive strain leads to charge confinement in the heavy-hole band (see Fig. 1a). Mobility (μh)…
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Probing the critical nucleus size in tetrahydrofuran clathrate hydrate formation using surface-anchored nanoparticles
Nucleation of THF clathrate on surfaces anchored nanosheets We select THF sII clathrate hydrate (THF: water=1:17 in molar ratio) as a model30,32,34,35,36,37,38,39,40,41 to experimentally investigate the nucleation process of clathrates. The clathrate hydrate nucleation was investigated via observing the influence of the size-controlled graphene oxide (GO) nanosheets on the freezing of deposited THF/water solution drops…
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The local variation of the Gaussian modulus enables different pathways for fluid lipid vesicle fusion
Deneke, V. E. & Pauli, A. The fertilization enigma. How sperm and egg fuse. Annu. Rev. Cell Dev. Biol. 37, 391–414 (2021). Article CAS PubMed Google Scholar Rizo, J. Molecular mechanisms underlying neurotransmitter release. Annu. Rev. Biophys. 51, 377–408 (2022). Article CAS PubMed PubMed Central Google Scholar Kalluri, R. & LeBleu, V. S. The biology,…
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Discrete symmetries tested at 10−4 precision using linear polarization of photons from positronium annihilations
Gurung, L., Babij, T. J., Hogan, S. D. & Cassidy, D. B. Precision microwave spectroscopy of the positronium n = 2 fine structure. Phys. Rev. Lett. 125, 073002 (2020). Article ADS CAS PubMed Google Scholar Adkins, G. S., Cassidy, D. B. & Pérez-Ríos, J. Precision spectroscopy of positronium: testing bound-state QED theory and the search for physics…