Results 41 to 50 of about 42,393 (288)

Multiplexed vortex beam-based optical tweezers generated with spiral phase mask

iScience, 2023
Summary: The design and implementation of a multiplexed spiral phase mask in an experimental optical tweezers setup are presented. This diffractive optical element allows the generation of multiple concentric vortex beams with independent topological ...
Francisco M. Muñoz-Pérez, Vicente Ferrando, Walter D. Furlan, Juan C. Castro-Palacio, J. Ricardo Arias-Gonzalez, Juan A. Monsoriu   +5 more
doaj   +1 more source

Generation of optical vortices imitating water vortices

, 2022
In optics, we can generate vortex beams using specific methods such as spiral phase plates or computer generated holograms. While, in nature, it is worth noting that water can produce vortices by a circularly symmetrical hole. So, if a light beam can generate vortex when it is diffracted by an aperture? Here, we show that the light field in the Fresnel
Yao, Jun, Bai, Yihua, Qin, Yaqiang, Gao, Mingsheng, Zhou, Lei-Ming, Jiang, Yuqiang, Yang, Yuanjie   +6 more
openaire   +2 more sources

Transcriptional network analysis of PTEN‐protein‐deficient prostate tumors reveals robust stromal reprogramming and signs of senescent paracrine communication

Molecular Oncology, EarlyView.
Combining PTEN protein assessment and transcriptomic profiling of prostate tumors, we uncovered a network enriched in senescence and extracellular matrix (ECM) programs associated with PTEN loss and conserved in a mouse model. We show that PTEN‐deficient cells trigger paracrine remodeling of the surrounding stroma and this information could help ...
Ivana Rondon‐Lorefice, Jose I. Lopez, Aitziber Ugalde‐Olano, Maite Zufiaurre, Ianire Astobiza, Natalia Martin‐Martin, Laura Bozal‐Basterra, Saioa Garcia‐Longarte, Amaia Zabala‐Letona, Sofia Rey, Aida Santos‐Martin, Miguel Unda, Ana Loizaga‐Iriarte, Mariona Graupera, Paolo Nuciforo, Arkaitz Carracedo, Isabel Mendizabal   +16 more
wiley   +1 more source

Orbital Angular Momentum generation in infrared with Holographic Optical Elements [PDF]

EPJ Web of Conferences
Optical vortices are of interest in the infrared range for applications in the fields of optical fiber communications and femtosecond laser pulses. Among the current techniques used to generate optical vortices, the use of a Spatial Light Modulator (SLM)
Marín-Sáez Julia, Sevilla Marina, Paredes Álvaro, Collados Victoria, Atencia Jesús   +4 more
doaj   +1 more source

Effect of optical lattice potentials on the vortices in rotating dipolar Bose-Einstein condensates

, 2014
We study the interplay of dipole-dipole interaction and optical lattice (OL) potential of varying depths on the formation and dynamics of vortices in rotating dipolar Bose-Einstein condensates.
Kumar, R. Kishor, Muruganandam, P.
core   +1 more source

Infrared laser sampling of low volumes combined with shotgun lipidomics reveals lipid markers in palatine tonsil carcinoma

Molecular Oncology, EarlyView.
Nanosecond infrared laser (NIRL) low‐volume sampling combined with shotgun lipidomics uncovers distinct lipidome alterations in oropharyngeal squamous cell carcinoma (OPSCC) of the palatine tonsil. Several lipid species consistently differentiate tumor from healthy tissue, highlighting their potential as diagnostic markers.
Leonard Kerkhoff, Manuela Moritz, Dennis Eggert, Anna Worthmann, Joerg Heeren, Henrike Zech, Till S. Clauditz, Waldemar Wilczak, Hartmut Schlüter, Christian S. Betz, Arne Böttcher, Jan Hahn   +11 more
wiley   +1 more source

Spatiotemporal optical vortex reconnections of loop vortices

Nanophotonics
Reconnections of spatiotemporal optical vortices have been shown to occur between line vortices. Here, we show that reconnections also occur between spatiotemporal loop vortices in optical waves. As optical loop vortices propagate in a media with spatial
Adams Jordan, Chong Andy
doaj   +1 more source

Polarization structure of optical vortices in inclined Laguerre-Gaussian beams passed through a uniaxial crystal

Компьютерная оптика
The work shows that in linearly polarized Laguerre-Gaussian beams passing through an anisotropic medium at an angle to the optical axis of the crystal, the distribution of optical vortices is devoid of axial symmetry. It is shown that the trajectories of
Yu.A. Egorov, A.F. Rubass
doaj   +1 more source

Optical vortices with starlight: Implications for ground-based stellar coronagraphy

, 2008
Using an l = 1 blazed fork-hologram at the focal plane of the Asiago 122 cm telescope, we obtained optical vortices from the stellar system Rasalgethi (alpha Herculis) and from the single star Arcturus (alpha Bootis).
A. Bianchini, Allen, Barbieri, Bazhenov, Beijersbergen, Bekshaev, C. Barbieri, Clifford, Coullet, F. Tamburini, Fried, G. Anzolin, G. Umbriaco, Grier, Halbwachs, Harwit, Jenkins, King, Law, Law, Leach, Mawet, McAlister, Molina-Terriza, Nye, Oemrawsingh, Padgett, Shvedov, Swartzlander, Swartzlander, Swartzlander, Swartzlander, Tamburini, Vaziri   +33 more
core   +1 more source

Partially incoherent optical vortices in self-focusing nonlinear media [PDF]

, 2003
We observe stable propagation of spatially localized single- and double-charge optical vortices in a self-focusing nonlinear medium. The vortices are created by self-trapping of partially incoherent light carrying a phase dislocation, and they are ...
C. Anastassiou, Chien-Chung Jeng, D. V. Petrov, G. V. Bogatyryova, J. Christou, Kristian Motzek, L. M. Pismen, M. Quiroga-Teixeiro, M. S. Soskin, Ming-Feng Shih, N. N. Rosanov, V. Tikhonenko, Yu. S. Kivshar, Yuri Kivshar, Z. Chen   +14 more
core   +1 more source