Results 81 to 90 of about 574,567 (291)

Nuclear pore links Fob1‐dependent rDNA damage relocation to lifespan control

FEBS Open Bio, EarlyView.
Damaged rDNA accumulates at a specific perinuclear interface that couples nucleolar escape with nuclear envelope association. Nuclear pores at this site help inhibit Fob1‐induced rDNA instability. This spatial organization of damage handling supports a functional link between nuclear architecture, rDNA stability, and replicative lifespan in yeast.
Yamato Okada, Mina Iwaki, Kyosuke Hagiri, Rei Izumi, Masahiko Harata, Chihiro Horigome   +5 more
wiley   +1 more source

Local Measurement of Microwave Response with Local Tunneling Spectra Using Near Field Microwave Microscopy

, 2009
We have designed and built a near-field scanning microwave microscope, which has been used to measure the local microwave response and the local density-of-states (LDOS) in the area including the boundary between the gold deposited and the non-deposited ...
Gaifullin, Marat B., Hirata, Kazuto, Kato, Takuya, Machida, Tadashi, Ooi, Shuuichi, Sakata, Hideaki   +5 more
core   +1 more source

Scanning Probe Microscopy as a Tool for Investigation of Biomaterials

Advances in Electrical and Electronic Engineering, 2012
Super-microscopic techniques like scanning tunnelling microscopy, atomic force microscopy or scanning near-field optical microscopy allows investigate micro- and/or nano-scale surfaces and structures.
Veronika Novotna, Alexandr Knapek, Pavel Tomanek, Sarka Safarova   +3 more
doaj   +1 more source

Dihydroorotate dehydrogenase (DHODH) regulates trophoblast syncytialization through organelle stress–induced cellular senescence

FEBS Open Bio, EarlyView.
The inhibition of mitochondrial dihydroorotate dehydrogenase (DHODH) impairs syncytialization and induces cellular senescence via mitochondrial and endoplasmic reticulum stress in human trophoblast stem cells, elevating sFlt1/PlGF levels, a hallmark of placental dysfunction in hypertensive disorders of pregnancy.
Kanoko Yoshida, Kazuya Kusama, Ayaka Horiuchi, Yu Kawaguchi, Atsuya Tsuru, Mikihiro Yoshie, Kazuhiro Tamura   +6 more
wiley   +1 more source

Diffraction-free subwavelength-beam optics

, 2003
Diffraction is a fundamental property of light propagation. Owing to this phenomenon,light diffracts out in all directions when it passes through a subwavelength slit.This imposes a fundamental limit on the transverse size of a light beam at a given ...
Adams, Arlt, Ash, Bateman, Besieris, Bethe, Betzig, Betzig, Bouchal, Bouchal, Brittingham, Canning, Chavez-Cerda, Chew, Chutinan, Dogariu, Durnin, Ebbesen, Girard, Gori, Grunwald, Gutirrez-Vega, Gutirrez-Vega, Hafizi, Herman, Jarutis, Jones, Kukhlevsky, Kukhlevsky, Kukhlevsky, Kukhlevsky, Kukhlevsky, Kukhlevsky, Lewis, Lezec, M. Mechler, Marcuse, Martin-Moreno, McDonald, Neerhoff, Okamoto, Orlov, Orlov, Ouzounov, Porras, Porras, Porras, Porras, Rayleigh, Rushin, Rushin, S.V. Kukhlevsky, Saari, Saleh, Skryabin, Snyder, Stratton, Tsao, Vassallo, Yariv, Zamboni-Rached, Zamboni-Rached, Ziolkowski   +62 more
core   +1 more source

Near-Field Scanning Optical Microscopy (NSOM)

SPIE Proceedings, 1986
Superresolution optical images have been generated with near-field scanning optical microscopy (NSOM). The underlying concept is presented and several modes of operation are discussed. A resolution based on edge sharpness of 70 nm or better has been demonstrated with two different instruments. Images have been obtained which characterize the resolution
Betzig, E., Lewis, A., Harootunian, A., Isaacson, M., Kratschmer, E.   +4 more
openaire   +1 more source

Optically induced forces in scanning probe microscopy

Nanophotonics, 2014
Typical measurements of light in the near-field utilize a photodetector such as a photomultiplier tube or a photodiode, which is placed remotely from the region under test.
Kohlgraf-Owens Dana C., Sukhov Sergey, Greusard Léo, De Wilde Yannick, Dogariu Aristide   +4 more
doaj   +1 more source

Improved Point Dipole Model for Subwavelength Resolution Scattering Near-Field Optical Microscopy (SNOM)

International Journal of Antennas and Propagation, 2020
High-resolution microscopy technique is of significant importance for studying nanomaterials. It is necessary to understand the near-field interaction between the probe and substrate materials in order to get the fine structure of the nanomaterial in the
Guizhen Lu, Ruiqi Zhao, Hongcheng Yin, Zhihe Xiao, Jing Zhang   +4 more
doaj   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

Near-Field Microwave Microscopy of Materials Properties

, 2000
Near-field microwave microscopy has created the opportunity for a new class of electrodynamics experiments of materials. Freed from the constraints of traditional microwave optics, experiments can be carried out at high spatial resolution over a broad ...
Anlage, Steven M., Feenstra, B. J., International School for Advanced Studies, Trieste (Italy), Steinhauer, D. E., Vlahacos, C. P., Wellstood, F. C.   +5 more
core   +2 more sources