Results 61 to 70 of about 574,567 (291)

Improvement of spatial resolution by tilt correction in near-field scanning microwave microscopy

AIP Advances, 2021
The limitation of mechanical manufacturing will result in a small tilt angle of the sample stage in the horizontal direction, which decreases the spatial resolution of imaging in near-field scanning microwave microscopy (NSMM). In this paper, we focus on
Xianfeng Zhang, Zhe Wu, Quansong Lan, Zhiliao Du, Quanxin Zhou, Ruirui Jiang, Jianlong Liu, Yubin Gong, Baoqing Zeng   +8 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

Near-Field Scanning Microwave Microscopy: Measuring Local Microwave Properties and Electric Field Distributions

, 1998
We describe the near-field microwave microscopy of microwave devices on a length scale much smaller than the wavelength used for imaging. Our microscope can be operated in two possible configurations, allowing a quantitative study of either material ...
Anlage, Steven M., Dutta, S. K., Feenstra, B. J., Steinhauer, D. E., Thanawalla, Ashfaq S., Vlahacos, C. P., Wellstood, F. C.   +6 more
core   +2 more sources

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

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

Near-field Raman microscopy

Materials Today, 2005
Near-field microscopy offers the power of optical characterization with nanometer spatial resolution (∼15 nm). Combining tip-enhanced microscopy with Raman scattering spectroscopy results in the ability to localize distinct spectral features, providing a unique opportunity to characterize materials on length scales of a few nanometers using visible ...
Anderson, Neil, Hartschuh, Achim, Novotny, Lukas   +2 more
openaire   +1 more source

Interaction of HS1BP3 with cortactin modulates TKS5 localisation, cell secretion and cancer malignancy

Molecular Oncology, EarlyView.
Here, we demonstrate that HS1BP3 interacts with Cortactin through a proline‐rich region (PRR3.1) and show that this interaction, and HS1BP3 itself, promote cancer cell proliferation and invasion. Inhibition of this interaction leads to build‐up of TKS5 in multivesicular endosomes and altered secretion of CD63 and CD9, providing an explanation for the ...
Arja Arnesen Løchen, Kristiane Søreng, Chiara Veroni, Laura Trachsel‐Moncho, Nagham Asp, Robin Gaupset, Lars Gustav Lyckander, Helene Knævelsrud, Lars Eftang, Anne Simonsen   +9 more
wiley   +1 more source

Fluorescent oxide nanoparticles adapted to active tips for near-field optics

, 2008
We present a new kind of fluorescent oxide nanoparticles with properties well suited to active-tip based near-field optics. These particles with an average diameter in the range 5-10 nm are produced by Low Energy Cluster Beam Deposition (LECBD) from a ...
A Cuche, B Masenelli, Blasse G, Brun M, C Dujardin, Chevalier N, Cuche A Sonnefraud Y Faklaris O Garrot D Boudou J P Sauvage T Roch J F Treussart F Huant S, D Amans, Drezet A, Dujardin C, Fort E, G Ledoux, Kukura P, Macedo A G, P Mélinon, S Huant, Y Sonnefraud   +16 more
core   +3 more sources

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

Overview of molecular signatures of senescence and associated resources: pros and cons

FEBS Open Bio, EarlyView.
Cells can enter a stress response state termed cellular senescence that is involved in various diseases and aging. Detecting these cells is challenging due to the lack of universal biomarkers. This review presents the current state of senescence identification, from biomarkers to molecular signatures, compares tools and approaches, and highlights ...
Orestis A. Ntintas, Sylvia Vagena, Pavlos Pantelis, Giorgos Theocharous, Russel Petty, Konstantinos Evangelou, Vassilis G. Gorgoulis   +6 more
wiley   +1 more source