Results 61 to 70 of about 4,098 (213)

Macrophages Mediate Mesoscale Brain Mechanical Homeostasis

open access: yesAdvanced Materials, Volume 38, Issue 6, 27 January 2026.
We investigated the role of infiltrating immune cells in sculpting the developing brain. Using Brillouin microscopy and active microrheology, we found microglia actively maintain tissue viscoelasticity. Moreover, colony stimulating factor one receptor (CSF1R)‐driven stromal remodeling alters brain mechanics in vivo. These findings link immune activity,
Woong Young So   +11 more
wiley   +1 more source

Encapsulation of a fiber taper coupled microtoroid resonator in a polymer matrix

open access: yes, 2013
We encapsulated a high-quality (Q) factor optical whispering gallery mode (WGM) microtoroid resonator together with its side coupled fiber taper inside a low refractive index polymer, achieving a final Q higher than 10^7.
Friedlein, Jacob   +3 more
core   +1 more source

Narrow Linewidth Spontaneous and Lasing Emissions from Open‐Access Microcavity‐Embedded Perovskite Quantum Dots

open access: yesAdvanced Optical Materials, Volume 14, Issue 1, 9 January 2026.
Continuous‐wave lasing from a small number of perovskite quantum dots is achieved by coupling their photoluminescence to open‐access curved dielectric cavities. This geometry confines their emission into a single optical mode, sharply narrowing linewidths in both spontaneous and lasing regimes.
Sunny Tiwari   +7 more
wiley   +1 more source

Geometrical Characterisation of a 2D Laser System and Calibration of a Cross-Grid Encoder by Means of a Self-Calibration Methodology

open access: yesSensors, 2017
This article presents a self-calibration procedure and the experimental results for the geometrical characterisation of a 2D laser system operating along a large working range (50 mm × 50 mm) with submicrometre uncertainty.
Marta Torralba   +4 more
doaj   +1 more source

On the Disturbance Rejection of a Piezoelectric Driven Nanopositioning System

open access: yesIEEE Access, 2020
Nanopositioning systems are very popular and playing an increasingly vital role in micro and nano-scale positioning industry due to their unique ability to achieve high-precision and high-speed operation.
Wei Wei   +3 more
doaj   +1 more source

Asymmetrically Nonlinear Generation of Optical Orbital Angular Momentum via Cooperation of Bragg Diffraction and Birefringent Phase Matching

open access: yesLaser &Photonics Reviews, Volume 20, Issue 2, 22 January 2026.
Nonlinear orbital angular momentum (OAM) manipulation is crucial for fundamental physics and information technologies. An integrated lithium niobate platform combining Bragg diffraction and birefringent phase matching asymmetrically generates and controls second‐harmonic OAM beams, achieving a normalized conversion efficiency of 10−2 W−1 and supports a
Xinyu Liu   +7 more
wiley   +1 more source

Design Optimization for the Measurement Accuracy Improvement of a Large Range Nanopositioning Stage

open access: yesSensors, 2016
Both an accurate machine design and an adequate metrology loop definition are critical factors when precision positioning represents a key issue for the final system performance.
Marta Torralba   +3 more
doaj   +1 more source

A flexure-based kinematically decoupled micropositioning stage with a centimeter range dedicated to micro/nano manufacturing [PDF]

open access: yes, 2015
Precision positioning stages with large strokes and high positioning accuracy are attractive for high-performance micro/nano manufacturing. This paper presents the dynamic design and characteristic investigation of a novel XY micropositioning stage ...
Liang, Cunman   +4 more
core   +1 more source

Real‐Time Nanopositioning for Security Holograms [PDF]

open access: yesPhotonicsViews, 2019
AbstractAn embedded vision system computes position data in real time and controls a nanopositioning system, ensuring that the optics in a microlithography system always stay in focus and enabling the creation of high‐tech master holograms for holographic security seals and labels.
Mariann Király, Iván Pulido
openaire   +1 more source

Single‐Source Cyanurate Precursor for Making Manganese Carbodiimide and the Second Harmonic Generation Effect of the Intermediate Manganese Monohydrocyanurate Mn(HC3N3O3)

open access: yesEuropean Journal of Inorganic Chemistry, Volume 28, Issue 36, December 15, 2025.
The thermal conversion of the single‐source precursor Mn(H2C3N3O3)2(H2O)4 reveals a sequence of new compounds. One intermediate compound is the second‐harmonic‐generation‐active Mn(HC3N3O3) (MHCY) that appears before pure Mn(CN2) is formed. Two manganese cyanurate compounds, Mn(H2C3N3O3)2(H2O)4 and Mn(H2C3N3O3)2(H2O)7 were prepared and structurally ...
Philipp Schneiderhan   +2 more
wiley   +1 more source

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