Results 71 to 80 of about 400,357 (270)

Development of novel one-shot full-field surface profilometer using chromatic confocal microscopy [PDF]

arXiv, 2018
A novel full-field surface profilometer using diffractive-based chromatic confocal microscopy and area-scan spectral sensing is developed. A normalized cross correlation algorithm was developed to establish a spectrum-depth response curve. A measuring repeatability for a single surface depth can be controlled within 120 nanometers.
arxiv  

Versatile high-speed confocal microscopy using a single laser beam [PDF]

, 2019
We present a new flexible high speed laser scanning confocal microscope and its extension by an astigmatism particle tracking device (APTV). Many standard confocal microscopes use either a single laser beam to scan the sample at relatively low overall frame rate, or many laser beam to simultaneously scan the sample and achieve a high overall frame rate.
arxiv   +1 more source

Matrigel inhibits elongation and drives endoderm differentiation in aggregates of mouse embryonic stem cells

FEBS Open Bio, EarlyView.
Stem cell‐based embryo models (SCBEMs) are valuable to study early developmental milestones. Matrigel, a basement membrane matrix, is a critical substrate used in various SCBEM protocols, but its role in driving stem cell lineage commitment is not clearly defined.
Atoosa Amel, Rachel Brown, Alexa Rabeling, Mubeen Goolam   +3 more
wiley   +1 more source

Spatiotemporal Control Over Protein Release from Artificial Cells via a Light‐Activatable Protease

Advanced Biology, EarlyView.
Stimulus‐responsive protein release is essential for intercellular communication. Mimicking this functionality in artificial cells is promising to study the working principles of cellular signaling. Herein, an engineered light‐activatable protease is implemented in a coacervate‐based artificial cell platform to establish user‐defined spatiotemporal ...
Arjan Hazegh Nikroo, Wiggert J. Altenburg, Thijs W. van Veldhuisen, Luc Brunsveld, Jan C. M. van Hest   +4 more
wiley   +1 more source

Confocal Microscopy in Biopsy Proven Argyrosis

Case Reports in Ophthalmological Medicine, 2013
Purpose. To evaluate the confocal microscopy findings of a 46-year-old male with bilateral biopsy proven argyrosis. Materials and Methods. Besides routine ophthalmologic examination, anterior segment photography and confocal microscopy with cornea ...
Melis Palamar, Suzan Guven Yilmaz, Taner Akalin, Sait Egrilmez, Ayse Yagci   +4 more
doaj   +1 more source

Characterization and Optimization of Vesicle Properties in bioPISA: from Size Distribution to Post‐Assembly Loading

Advanced Biology, EarlyView.
The paper explores the creation and characterization of vesicles through biocatalytic Polymerization‐Induced Self‐Assembly (bioPISA), focusing on achieving size uniformity using centrifugation techniques. It examines the effects of stirring speed on vesicle morphology and analyses the internal polymer‐rich structure using fluorescence correlation ...
Andrea Belluati, Adrian Bloch, Kaloian Koynov, Mariana Müller Nieva, Mohadeseh Bagherabadi, Annette Andrieu‐Brunsen, Harald Kolmar, Nico Bruns   +7 more
wiley   +1 more source

Caspase-dependent apoptosis in Riboflavin Transporter Deficiency iPSCs and derived motor neurons

Cell Death Discovery
Riboflavin Transporter Deficiency (RTD) is a rare genetic, childhood-onset disease. This pathology has a relevant neurological involvement, being characterized by motor symptoms, ponto-bulbar paralysis and sensorineural deafness.
Chiara Marioli, Maurizio Muzzi, Fiorella Colasuonno, Cristian Fiorucci, Nicolò Cicolani, Stefania Petrini, Enrico Bertini, Marco Tartaglia, Claudia Compagnucci, Sandra Moreno   +9 more
doaj   +1 more source

Methods to calibrate and scale axial distances in confocal microscopy as a function of refractive index [PDF]

arXiv, 2014
Accurate distance measurement in 3D confocal microscopy is important for quantitative analysis, volume visualization and image restoration. However, axial distances can be distorted by both the point spread function and by a refractive-index mismatch between the sample and immersion liquid, which are difficult to separate.
arxiv  

Determination of the positions and orientations of concentrated rod-like colloids from 3D microscopy data [PDF]

, 2014
Confocal microscopy in combination with real-space particle tracking has proven to be a powerful tool in scientific fields such as soft matter physics, materials science and cell biology. However, 3D tracking of anisotropic particles in concentrated phases remains not as optimized compared to algorithms for spherical particles. To address this problem,
arxiv   +1 more source

Light‐Triggered Protease‐Mediated Release of Actin‐Bound Cargo from Synthetic Cells

Advanced Biology, EarlyView.
TEV Prtoease‐mediated Releasable Actin‐binding Protein (TRAP) is a protein‐based platform consisting of a cargo tightly bound to reconstituted actin networks in synthetic cells which can be proteolyticly released from the bound actin, followed by its secretion through membrane translocation mediated by a cell‐penetrating peptide.
Mousumi Akter, Hossein Moghimianavval, Gary D. Luker, Allen P. Liu   +3 more
wiley   +1 more source