Results 101 to 110 of about 121,703 (314)

The effective potential of N-vector models: a field-theoretic study to O(\epsilon^3)

, 1999
We study the effective potential of three-dimensional O($N$) models. In statistical physics the effective potential represents the free-energy density as a function of the order parameter (Helmholtz free energy), and, therefore, it is related to the ...
Andrea Pelissetto, Antonenko, Avdeev, Bagnuls, Baker, Baker, Baker, Balog, Boos, Broadhurst, Broadhurst, Broadhurst, Brézin, Brézin, Butera, Butera, Campostrini, Campostrini, Campostrini, Campostrini, Chetyrkin, Chung, Davydychev, Davydychev, des Cloizeaux, des Cloizeaux, Ettore Vicari, Griffiths, Guida, Guida, Hasenbusch, Heap, Josephson, Katsura, Kim, Le Guillou, Le Guillou, Lewin, Lipa, Lipatov, McKenzie, Nickel, Nicoll, Parisi, Pelissetto, Pelissetto, Pelissetto, Pisarski, Reisz, Schofield, Schofield, Sokolov, Sokolov, Sokolov, Stroesser, Tetradis, Tkachov, Tsypin, Wallace, Wilson, Zinn, Zinn-Justin   +61 more
core   +2 more sources

Soft Ionic and Electronic Triboelectric Nanogenerators: Toward Attachable and Implantable Biomedical Applications

Advanced Materials, EarlyView.
This review provides an overview of triboelectric nanogenerator (TENG)–based biomedical applications by classifying studies into electronic and ionic systems across attachable and implantable platforms. It summarizes key material choices, device structures, and working mechanisms that characterize current TENG‐based research, and outlines six future ...
Kyongtae Choi, Jimin Park, Won Jun Song, Soohwan An, Seonggyu Choe, Byeong‐Rak Keum, Min Young Kim, Dae Hee Hwang, Young‐Geun Park, Sung‐Won Kim, Sangyul Baik, Gwang‐Bum Im, Younghoon Lee   +12 more
wiley   +1 more source

Metamaterial Antennas Enhance MRI of the Eye and Occipital Brain

Advanced Materials, EarlyView.
A radiofrequency antenna platform comprising planar and bend configurations is developed, incorporating structurally integrated epsilon‐negative metamaterial unit cells to enhance MRI. These antennas enable high‐resolution in vivo human MRI of the eye, orbit, and occipital brain. Comprehensive validation, including simulations, phantom experiments, SAR,
Nandita Saha, Bilguun Nurzed, Mostafa Berangi, Andre Kuehne, Helmar Waiczies, Igor Fabian Tellez Ceja, Xiang Hu, Thomas Gladytz, Lisa Krenz, Dave Huebler, Beate Endemann, Claudia Brockmann, Ebba Beller, Oliver Stachs, Thoralf Niendorf   +14 more
wiley   +1 more source

Topology and Material Optimization in Ultra‐Soft Magneto‐Active Structures: Making Advantage of Residual Anisotropies

Advanced Materials, EarlyView.
Residual magnetization induces pronounced mechanical anisotropy in ultra‐soft magnetorheological elastomers, shaping deformation and actuation even without external magnetic fields. This study introduces a computational‐experimental framework integrating magneto‐mechanical coupling into topology optimization for designing soft magnetic actuators with ...
Carlos Perez‐Garcia, Rogelio Ortigosa, Jesús Martínez‐Frutos, Daniel Garcia‐Gonzalez   +3 more
wiley   +1 more source

Effects of thermal fluctuations on non-minimal regular magnetic black hole

European Physical Journal C: Particles and Fields, 2017
We analyze the effects of thermal fluctuations on a regular black hole (RBH) of the non-minimal Einstein–Yang–Mill theory with gauge field of magnetic Wu–Yang type and a cosmological constant.
Abdul Jawad, M. Umair Shahzad
doaj   +1 more source

Beyond Earth: Resilience of Quasi‐2D Perovskite Solar Cells in Space

Advanced Materials, EarlyView.
In the article (DOI: 10.1002/adma.202520433), Christoph Putz and co‐workers demonstrate rigid quasi‐2D perovskite solar cells operating in low Earth orbit, delivering stable power for more than 100 days under real‐space conditions. In‐orbit performance is correlated with extensive ground‐based thermal and proton‐irradiation studies on rigid and ...
Christoph Putz, Lukas E. Lehner, Stepan Demchyshyn, Bekele Hailegnaw, Phillip Jahelka, Magdalena Breitwieser, Sercan Özen, Andrea Denker, Jürgen Bundesmann, Alina Hanna Dittwald, Dilara Karabulut, Philipp Tockhorn, Steve Albrecht, Felix Lang, Markus C. Scharber, Michael D. Kelzenberg, Harry A. Atwater, Martin Kaltenbrunner   +17 more
wiley   +1 more source

Miniature Soft Robot With Magnetically Reprogrammable Surgical Functions

Advanced Materials, EarlyView.
Miniature soft robots have great prospects to revolutionize minimally invasive treatments. Here we present a miniature soft robot, which can be reprogrammed to perform five surgical functionalities with six‐degrees‐of‐freedom motions. This soft robot can prospectively make minimally invasive surgery considerably safer and painless, and enable ...
Chelsea Shan Xian Ng, Yu Xuan Yeoh, Nicholas Yong Wei Foo, Keerthana Radhakrishnan, Guo Zhan Lum   +4 more
wiley   +1 more source

Computational insights into the electronic, chemical, and thermodynamic properties of borazine and its derivatives

Results in Chemistry
Borazine and its derivatives have significant appeal due to their utility as precursors for synthesizing hexagonal boron nitride sheets, which are isostructural to graphene with a wide bandgap, making them promising materials for advanced technological ...
S. Haque, M.A. Rahman, M.A.M. Islam, A. Hossain   +3 more
doaj   +1 more source

Investigation of Magnetic Properties of Spin 5/2 Ising Chain by Using Transfer Matrix Method

Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2018
A magnetic property of the one dimensional spin 5/2Ising model under the magnetic field has been investigated by means of transfermatrix method. Thermodynamic response functions are also obtained for varyingvalues of scaling temperature and scaling ...
Mehmet Gökhan Şensoy, Mehmet Batı
doaj   +1 more source

Evaluation of Density Matrix and Helmholtz Free Energy for Harmonic Oscillator Asymmetric Potential via Feynmans Approach [PDF]

, 2014
Piyarut Moonsri, Artit Hutem
openalex   +1 more source