Results 111 to 120 of about 181,839 (320)

Unveiling Phonon Contributions to Thermal Conductivity and the Applicability of the Wiedemann—Franz Law in Ruthenium and Tungsten Thin Films

Advanced Functional Materials, EarlyView.
Thermal transport in Ru and W thin films is studied using steady‐state thermoreflectance, ultrafast pump–probe spectroscopy, infrared‐visible spectroscopy, and computations. Significant Lorenz number deviations reveal strong phonon contributions, reaching 45% in Ru and 62% in W.
Md. Rafiqul Islam, Pravin Karna, Niraj Bhatt, Sandip Thakur, Helge Heinrich, Daniel M. Hirt, Saman Zare, Christopher Jezewski, Rinus T.P. Lee, Kandabara Tapily, John T. Gaskins, Colin D. Landon, Sean W. King, Ashutosh Giri, Patrick E. Hopkins   +14 more
wiley   +1 more source

Matrix Measures and Finite Rank Perturbations of Self-adjoint Operators

, 2019
Matrix-valued measures provide a natural language for the theory of finite rank perturbations. In this paper we use this language to prove some new perturbation theoretic results.
Liaw, Constanze, Treil, Sergei
core  

Decomposability of finite rank operators in certain subspaces and algebras [PDF]

, 2001
Jiankui Li
openalex   +1 more source

On singular values of hankel operators of finite rank

Linear Algebra and its Applications, 1989
Let H be a Hankel operator defined by its symbol \(\rho =\pi /\chi\), where \(\chi\) is a monic polynomial of degree n and \(\pi\) is a polynomial of degree less than n. Then H has rank n. We derive a generalized Takagi singular value problem defined by two \(n\times n\) matrices, such that its n generalized Takagi singular values are the positive ...
Gragg, W.B., Reichel, L.
openaire   +1 more source

Mechanical Properties of Architected Polymer Lattice Materials: A Comparative Study of Additive Manufacturing and CAD Using FEM and µ‐CT

Advanced Functional Materials, EarlyView.
This study examines how pore shape and manufacturing‐induced deviations affect the mechanical properties of 3D‐printed lattice materials with constant porosity. Combining µ‐CT analysis, FEM, and compression testing, the authors show that structural imperfections reduce stiffness and strength, while bulk material inhomogeneities probably enhance ...
Oliver Walker, Thierry Roland, Damien Favier, Antoine Egele, Michael Heymann, Cosima Stubenrauch   +5 more
wiley   +1 more source

Automorphisms of graphs corresponding to conjugacy classes of finite-rank self-adjoint operators [PDF]

, 2021
Mark Pankov, Krzysztof Petelczyc, Mariusz Żynel   +2 more
openalex   +1 more source

An Ultra‐Robust Memristor Based on Vertically Aligned Nanocomposite with Highly Defective Vertical Channels for Neuromorphic Computing

Advanced Functional Materials, EarlyView.
An ultra‐robust memristor based on SrTiO3‐CeO2 (S‐C) vertically aligned nanocomposite (VAN) achieving exceptional endurance of 1012 switching cycles via interface engineering. Artificial neural networks (ANNs) integrated with S‐C VAN memristors exhibit high training accuracy across multiple datasets.
Zedong Hu, Hongyi Dou, Jeremy B. Gan, Cun Li, Xuanyu Sheng, Juanjuan Lu, Abhijeet Choudhury, Jialong Huang, Yizhi Zhang, Zhongxia Shang, Ye Cao, Xinghang Zhang, Haiyan Wang   +12 more
wiley   +1 more source

Exact lattice bosonization of finite N matrix quantum mechanics and c = 1

Journal of High Energy Physics
We describe a new exact lattice bosonization of matrix quantum mechanics (equivalently of non-relativistic fermions) that is valid for arbitrary rank N of the matrix.
Gautam Mandal, Ajay Mohan
doaj   +1 more source

Finite rank commutators of Toeplitz operators on the bidisk [PDF]

, 2012
Young Joo Lee
openalex   +1 more source

Finite rank Toeplitz operators: Some extensions of D. Luecking's theorem

Journal of Functional Analysis, 2009
15 ...
Alexandrov, Alexey, Rozenblum, Grigori
openaire   +2 more sources