Results 31 to 40 of about 3,713,947 (387)

Comprehensive correlation analysis for super-resolution dynamic fingerprinting of cellular compartments using the Zeiss Airyscan detector

open access: yesNature Communications, 2018
Different fluorescence fluctuation methods require specialized equipment and cannot be performed simultaneously. Here the authors present an implementation that includes many advanced fluorescence fluctuation techniques in a single analysis, by ...
L. Scipioni   +3 more
doaj   +1 more source

A versatile standard for bathochromic fluorescence based on intramolecular FRET. [PDF]

open access: yes, 2011
A perylene and a terrylene tetracarboxylic bisimide dyad was prepared in which an efficient energy transfer from the former to the latter is observed. The absorption spectrum of this compound covers a broad range.
Adachi   +25 more
core   +1 more source

AO DIVER: Development of a three-dimensional adaptive optics system to advance the depth limits of multiphoton imaging

open access: yesAPL Photonics, 2020
Multiphoton microscopy (MPM) can non-invasively measure the dynamic biochemical properties deep in scattering biological samples and has the potential to accelerate clinical research with advances in deep tissue imaging.
S. Leemans   +3 more
doaj   +1 more source

Fluorescence interferometry

open access: yes, 2010
We describe an interferometer based on fluorescent emission of radiation of two qubits in quasi-one-dimensional modes. Such a system can be readily realized with dipole emitters near conducting surface-plasmonic nanowires or with superconducting qubits ...
G. S. Paraoanu, M. O. Scully
core   +1 more source

Detection and Quantification of DNA by Fluorophore-Induced Plasmonic Current: A Novel Sensing Approach

open access: yesSensors
We report on the detection and quantification of aqueous DNA by a fluorophore-induced plasmonic current (FIPC) sensing method. FIPC is a mechanism described by our group in the literature where a fluorophore in close proximity to a plasmonically active ...
Daniel R. Pierce   +7 more
doaj   +1 more source

Optical Manipulation of Lanthanide-Doped Nanoparticles: How to Overcome Their Limitations

open access: yesFrontiers in Chemistry, 2020
Since Ashkin's pioneering work, optical tweezers have become an essential tool to immobilize and manipulate microscale and nanoscale objects. The use of optical tweezers is key for a variety of applications, including single-molecule spectroscopy ...
Elisa Ortiz-Rivero   +4 more
doaj   +1 more source

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

open access: yesFEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi   +5 more
wiley   +1 more source

Plasmodium falciparum gametogenesis essential protein 1 (GEP1) is a transmission‐blocking target

open access: yesFEBS Letters, EarlyView.
This study shows Plasmodium falciparum GEP1 is vital for activating sexual stages of malarial parasites even independently of a mosquito factor. Knockout parasites completely fail gamete formation even when a phosphodiesterase inhibitor is added. Two single‐nucleotide polymorphisms (V241L and S263P) are found in 12%–20% of field samples.
Frederik Huppertz   +5 more
wiley   +1 more source

Efficient nitrogen-vacancy centers' fluorescence excitation and collection from micrometer-sized diamond by a tapered optical fiber

open access: yes, 2018
Efficiently excite nitrogen-vacancy (NV) centers in diamond and collect their fluorescence significantly benefit the fiber-optic-based NV sensors.
Arumugam, Sri Ranjini   +6 more
core   +1 more source

Biophysical analysis of angiotensin II and amyloid‐β cross‐interaction in aggregation and membrane disruption

open access: yesFEBS Letters, EarlyView.
Angiotensin II (AngII), a neuropeptide, interacts with amyloid‐β (Aβ), a key player in Alzheimer's disease. This study reveals that AngII reduces Aβ aggregation and membrane disruption in vitro. Biophysical assays and molecular modeling suggest AngII binds disordered Aβ forms, potentially modulating early amyloidogenic events and contributing to ...
Mohsen Habibnia   +5 more
wiley   +1 more source

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