Results 141 to 150 of about 4,539 (257)

Beyond Global Shannon Entropy: A Channel-Specific Approach to Quantify Polychromia in Melanoma. [PDF]

Cureus
Martínez-Ortega JI, Martinez-Jaramillo B.   +1 more
europepmc   +1 more source

Bio‐inspired nanophotonics: Structural color, chirality, and resonance metasurfaces

InfoMat, EarlyView.
A butterfly‐wing‐inspired anisotropic plasmonic flatband resonant metasurface. Insets, photo of the butterfly, Sasakia charonda, and the SEM image of its wing scale (above); the SEM image of the metasurface (below). Abstract The dazzling colors of butterfly wings and hummingbird feathers are not painted with pigments, but crafted by nature's invisible ...
Weihan Liu, Yao Liang, Din Ping Tsai
wiley   +1 more source

Minimalist optical system for achromatic imaging within extended field of view based on monolithic integrated meta-axicon cluster. [PDF]

Light Sci Appl
Wang J, Wang C, Wang B, Deng Y, Lin Y, Han Y, Yao L, Zhang L, Li D, Meng D, Liu X, Li X, Korvink JG, Deng Y.   +13 more
europepmc   +1 more source

Bio‐inspired inorganic/organic semiconductor heterostructure synapses with UV–visible–NIR wavelength‐dependent responses for image recognition

InfoMat, EarlyView.
This study presents a SnSe2/DNTT heterostructure photonic synaptic transistor that exhibits wavelength‐dependent photoresponses and synaptic plasticity. Operating with low energy consumption, the device extends spectral sensitivity from ultraviolet (UV) to near‐infrared (NIR) wavelengths, significantly enhancing neuromorphic computing performance. When
Shuying He, Huaiyu Gao, Junyao Zhang, Hongrong Chang, Zhiyu Zhang, Jianda Xu, Jie Yang, Jia Huang   +7 more
wiley   +1 more source

Multimodal Biometric Framework for Evaluating Emotional Impact of Chromatic Manipulation in Cinematic Content. [PDF]

Sensors (Basel)
Del-Valle-Soto C, Nolazco-Flores JA, GomezRomero-Borquez J, Gonzalez-Gomez A, Garcia-Torres M, Corona V, López-Pimentel JC, Visconti P.   +7 more
europepmc   +1 more source

Colourings of Uniform Group Divisible Designs and Maximum Packings

Journal of Combinatorial Designs, EarlyView.
ABSTRACT A weak c $c$‐colouring of a design is an assignment of colours to its points from a set of c $c$ available colours, such that there are no monochromatic blocks. A colouring of a design is block‐equitable, if for each block, the number of points coloured with any available pair of colours differ by at most one.
Andrea C. Burgess, Peter Danziger, Diane Donovan, Tara Kemp, James G. Lefevre, David A. Pike, E. Şule Yazıcı   +6 more
wiley   +1 more source

Achieving Achromatic and Misalignment-Tolerant Fiber Coupling via Meta-Lens with Structural Interleaving. [PDF]

Nanomaterials (Basel)
Yuan X, Tian Z, Jia B, Zhang Y, Zhou Y, Hu C, Xu Q, Yun F.   +7 more
europepmc   +1 more source

Fractional List Packing for Layered Graphs

Journal of Graph Theory, EarlyView.
ABSTRACT The fractional list packing number χ ℓ • ( G ) ${\chi }_{\ell }^{\bullet }(G)$ of a graph G $G$ is a graph invariant that has recently arisen from the study of disjoint list‐colourings. It measures how large the lists of a list‐assignment L : V ( G ) → 2 N $L:V(G)\to {2}^{{\mathbb{N}}}$ need to be to ensure the existence of a “perfectly ...
Stijn Cambie, Wouter Cames van Batenburg
wiley   +1 more source

Implementation of a Length Gauge Based on Optical Frequency Domain Reflectometry (OFDR). [PDF]

Sensors (Basel)
Shestakov A, Kambur D, Konstantinov Y, Belokrylov M, Claude D, Shardakov I, Turov A.   +6 more
europepmc   +1 more source

Weak Degeneracy of Planar Graphs

Journal of Graph Theory, EarlyView.
ABSTRACT The weak degeneracy of a graph G $G$ is a numerical parameter that was recently introduced by the first two authors with the aim of understanding the power of greedy algorithms for graph coloring. Every d $d$‐degenerate graph is weakly d $d$‐degenerate, but the converse is not true in general (e.g., all connected d $d$‐regular graphs except ...
Anton Bernshteyn, Eugene Lee, Evelyne Smith‐Roberge   +2 more
wiley   +1 more source