Results 51 to 60 of about 45,495 (276)

A note on "Folding wheels and fans." [PDF]

, 2012
In S.Gervacio, R.Guerrero and H.Rara, Folding wheels and fans, Graphs and Combinatorics 18 (2002) 731-737, the authors obtain formulas for the clique numbers onto which wheels and fans fold.
Kloks, Ton, Wang, Yue-Li
core  

Multiwavelength Achromatic Metasurfaces by Dispersive Phase Compensation

, 2015
The replacement of bulk refractive optical elements with diffractive planar components enables the miniaturization of optical systems. However, diffractive optics suffers from large chromatic aberrations due to the dispersion of the phase accumulated by ...
Aieta, Francesco, Capasso, Federico, Genevet, Patrice, Kats, Mikhail A.   +3 more
core   +1 more source

On retracts, absolute retracts, and folds in cographs [PDF]

, 2013
Let G and H be two cographs. We show that the problem to determine whether H is a retract of G is NP-complete. We show that this problem is fixed-parameter tractable when parameterized by the size of H. When restricted to the class of threshold graphs or
A. Máté, B. Courcelle, D. Corneil, E. Howorka, E. Pesch, E. Wolk, F. Fomin, F. Harary, H. Bandelt, H. Bandelt, H. Bodlaender, J. Edmonds, M. Golumbic, M. Golumbic, P. Damaschke, P. Golovach, T. Feder   +16 more
core   +1 more source

Plasmonic Enhancement of Fluorescence and Protein Dynamics in Living Mammalian Cells

Advanced Materials, EarlyView.
This study demonstrates plasmonic enhancement of the function of fluorescent voltage sensing proteins (genetically encoded voltage indicators, (GEVIs), QuasAr6) in live mammalian cells. Coupling to plasmonic nanoparticles does not just increase fluorescence, but influences the protein photocycle, creating a hybrid sensor with its response speed to ...
Marco Locarno, Qiangrui Dong, Marco Post, Xin Meng, Cristiano Glessi, Nynke Marije Hettema, Nidas Brandsma, Sebbe Blokhuizen, Alejandro Castañeda Garcia, Srividya Ganapathy, Thieme Schmidt, Lars van Roemburg, Bing Xu, Chun‐Ting Cho, Liedewij Laan, Miao‐Ping Chien, Daan Brinks   +16 more
wiley   +1 more source

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

Advanced Materials Technologies, EarlyView.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane, Lyn I. Jones, Richard M. Martin, Helen Winter, Faezeh Arab Hassani   +4 more
wiley   +1 more source

Achromatic late-time variability in thermonuclear X-ray bursts - an accretion disk disrupted by a nova-like shell?

, 2010
An unusual Eddington-limited thermonuclear X-ray burst was detected from the accreting neutron star in 2S 0918-549 with the Rossi X-ray Timing Explorer.
Altamirano, Armitage, Ballantyne, Ballantyne, Boirin, Cornelisse, Cornelisse, Cumming, Cumming, D. K. Galloway, D. R. Ballantyne, Damen, Díaz Trigo, Falanga, Fujimoto, Fukue, Fukue, Galloway, Heger, in ’t Zand, in ’t Zand, in ’t Zand, in ’t Zand, J. J. M. in ’t Zand, Jahoda, Jonker, Keek, Kuulkers, Lamb, Lewin, London, Madej, Miller, Molkov, Nelemans, Ogilvie, Parmar, Petterson, Pringle, Pringle, Revnivtsev, Shakura, Shaposhnikov, Sokoloski, Steiner, Strohmayer, Svensson, van Paradijs, Walker, Walker, Wijers, Woosley   +51 more
core   +1 more source

A compact design for beam transport [PDF]

, 1992
A double-achromatic, double-focusing magnet system of very small size is described which will be used in the injection line for an undulator in a FEL experiment.
Botman, Jan I.M., Ernst, Gerard J., Mols, Rainier F.X.A.M.   +2 more
core   +2 more sources

Reconfigurable, Temperature Resilient Phase‐Change Metasurfaces Fabricated via High Throughput Nanoimprinting Lithography

Advanced Science, EarlyView.
ABSTRACT The combination of metasurfaces with chalcogenide phase‐change materials is a highly promising route toward the development of multifunctional and reconfigurable nanophotonic devices. However, their transition into real‐world devices is hindered by several technological challenges. This includes, amongst others, the lack of large area photonic
Carlota de Ruiz de Galarreta, Yinghao Zhao, Jose Mendoza‐Carreño, José M. Caicedo, José Santiso, C. David Wright, M. Isabel Alonso, Jiafang Li, Agustin Mihi   +8 more
wiley   +1 more source

Why colour is complex: Evidence that bees perceive neither brightness nor green contrast in colour signal processing

FACETS, 2018
Honey bees (Apis mellifera Linnaeus, 1758) potentially rely on a variety of visual cues when searching for flowers in the environment. Both chromatic and achromatic (brightness) components of flower signals have typically been considered simultaneously ...
Leslie Ng, Jair E. Garcia, Adrian G. Dyer   +2 more
doaj   +1 more source

A Correlative SICM‐OPM Platform for Surface and Volumetric Imaging in Live Cells

Advanced Science, EarlyView.
A multifunctional correlative imaging platform integrating Scanning Ion Conductance Microscopy (SICM) with Oblique Plane Microscopy (OPM) enables simultaneous surface topography, mechanical mapping, and 3D volumetric fluorescence imaging in live cells.
Wenzhi Hong, Ziwei Zhang, Ao Li, Ting Sun, Yunzhao Wu, Devkee M. Vadukul, Dylan Jones, Bing Li, Fengjie Liu, Francesco A. Aprile, Yuri Korchev, Julia Gorelik, David Klenerman, Andrew Shevchuk   +13 more
wiley   +1 more source