Results 71 to 80 of about 574,698 (334)

Super-resolution optical imaging: A comparison

Micro and Nano Engineering, 2019
Overcoming the classical diffraction limit in optical microscopy is known to be achievable by a variety of far-field and near-field microscopy techniques.
Gergely Huszka, Martin A.M. Gijs
doaj   +1 more source

In situ plant materials hyperspectral imaging by multimodal scattering near-field optical microscopy

Communications Materials, 2021
Plant cells are elaborate three-dimensional polymer nano-constructs with complex chemistry. Here, multimodal scattering nearfield optical microscopy of poplar trees is used to establish in situ high-resolution mappings of the local dielectric functions ...
Anne M. Charrier, Aubin C. Normand, Ali Passian, Philip Schaefer, Aude L. Lereu   +4 more
doaj   +1 more source

Peroxidasin enables melanoma immune escape by inhibiting natural killer cell cytotoxicity

Molecular Oncology, EarlyView.
Peroxidasin (PXDN) is secreted by melanoma cells and binds the NK cell receptor NKG2D, thereby suppressing NK cell activation and cytotoxicity. PXDN depletion restores NKG2D signaling and enables effective NK cell–mediated melanoma killing. These findings identify PXDN as a previously unrecognized immune evasion factor and a potential target to improve
Hsu‐Min Sung, David Bickel, Lena C. M. Krause, Daria Ezeriņa, Christian Ickes, Julian Wojtachnia, Christine S. Gibhardt, Magdalena Shumanska, Khadija Wahni, Andrea Paluschkiwitz, Julia Malo Pueyo, Ekaterina Baranova, Wim Vranken, Hedwig Stanisz, Ioana Stejerean‐Todoran, Michael P. Schön, Joris Messens, Ivan Bogeski   +17 more
wiley   +1 more source

Review of near-field optics and superlenses for sub-diffraction-limited nano-imaging

AIP Advances, 2016
Near-field optics and superlenses for imaging beyond Abbe’s diffraction limit are reviewed. A comprehensive and contemporary background is given on scanning near-field microscopy and superlensing.
Wyatt Adams, Mehdi Sadatgol, Durdu Ö. Güney   +2 more
doaj   +1 more source

Ultrabright single-photon emission from germanium-vacancy zero-phonon lines: deterministic emitter-waveguide interfacing at plasmonic hot spots

Nanophotonics, 2020
Striving for nanometer-sized solid-state single-photon sources, we investigate atom-like quantum emitters based on single germanium-vacancy (GeV) centers isolated in crystalline nanodiamonds (NDs).
Siampour Hamidreza, Wang Ou, Zenin Vladimir A., Boroviks Sergejs, Siyushev Petr, Yang Yuanqing, Davydov Valery A., Kulikova Liudmila F., Agafonov Viatcheslav N., Kubanek Alexander, Mortensen N. Asger, Jelezko Fedor, Bozhevolnyi Sergey I.   +12 more
doaj   +1 more source

Mapping near-field plasmonic interactions of silver particles with scanning near-field optical microscopy measurements [PDF]

, 2015
A scanning near-field optical microscope (SNOM) is a powerful tool to investigate optical effects that are smaller than Abbe’s limit. Its greatest strength is the simultaneous measurement of high-resolution topography and optical nearfield data that can ...
Andrae, Patrick, Fumagalli, Paul, Haggui, Mohamed, Schmid, Martina, Song, Min   +4 more
core   +1 more source

RIPK4 function interferes with melanoma cell adhesion and metastasis

Molecular Oncology, EarlyView.
RIPK4 promotes melanoma growth and spread. RIPK4 levels increase as skin lesions progress to melanoma. CRISPR/Cas9‐mediated deletion of RIPK4 causes melanoma cells to form less compact spheroids, reduces their migratory and invasive abilities and limits tumour growth and dissemination in mouse models.
Norbert Wronski, Sławomir Lasota, Ewelina Madej, Anna A. Brożyna, Małgorzata Szczygieł, Agnieszka Harazin‐Lechowska, Jan Czerbniak, Janusz Rys, Jaroslaw Czyz, Agnieszka Wolnicka‐Glubisz   +9 more
wiley   +1 more source

Rethinking plastic waste: innovations in enzymatic breakdown of oil‐based polyesters and bioplastics

FEBS Open Bio, EarlyView.
Plastic pollution remains a critical environmental challenge, and current mechanical and chemical recycling methods are insufficient to achieve a fully circular economy. This review highlights recent breakthroughs in the enzymatic depolymerization of both oil‐derived polyesters and bioplastics, including high‐throughput protein engineering, de novo ...
Elena Rosini, Nicolò Antonelli, Gianluca Molla   +2 more
wiley   +1 more source

Digital Twins for 3D Confocal Microscopy: Near-Field, Far-Field, and Comparison with Experiments

Sensors
To push the boundaries of confocal microscopy beyond its current limitations by predicting sensor responses for complex surface geometries, we build digital twins using three rigorous models, the finite element method (FEM), Fourier modal method (FMM ...
Poul-Erik Hansen, Tobias Pahl, Liwei Fu, Ida Nielsen, Felix Rosenthal, Stephan Reichelt, Peter Lehmann, Astrid Tranum Rømer   +7 more
doaj   +1 more source

Identification of Near-Field and Far-Field Using Confocal Microscopy Setup for Optical Sensing Applications

ASM Science Journal, 2019
The presence of near-field indicates the existence of evanescent waves, which is one of the important requirements for the development of an optical sensor.
Wan Maisarah Mukhtar, Nor Zahirah Mohd Zulkifli, Razman Mohd Halim   +2 more
doaj   +1 more source