Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
High-resolution magnetic field scanning is critical for investigating nanoscale spin systems and characterizing defects in microelectronic devices. We present a fabrication-free approach to create robust magnetic probes with 1-μm spatial resolution by synergizing the quantum magnetic sensitivity of nitrogen-vacancy (NV) centers in nanodiamonds with the enhanced photon efficiency of tapered fibers. Through gradient-force optical trapping, nanodiamonds are precisely positioned at the fiber tip, where van der Waals forces immobilize them without requiring micro-nanoprocessing. In addition to possessing high spatial resolution, the probe exhibits a magnetic sensitivity reaching . By demonstrating a magnetic field scan of crossed microwires, this method can be extended to measure tiny magnetic structures or microcircuits, leveraging the integrated photonic enhancement of tapered fibers for robust high signal-to-noise sensing.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acs.nanolett.5c02307 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Plasmonic nanoparticles boost low-current perovskite LEDs governed by photon recycling effects.
RSC Adv
September 2025
Instituto de Ciencia de Materiales de Madrid, ICMM-CSIC C/Sor Juana Inés de la Cruz, 3 Madrid 28049 Spain
Perovskite light-emitting diodes (PeLEDs) have emerged as a promising technology for next-generation display and lighting applications, thanks to their remarkable colour purity, tunability, and ease of fabrication. In this work, we explore the incorporation of plasmonic spherical nanoparticles (NPs) directly embedded into the green-emitting CsPbBr perovskite layer in a PeLED as a strategy to enhance both its optical and electrical properties. We find that plasmonic effects directly boost spontaneous emission while also influencing charge carrier recombination dynamics.
View Article and Find Full Text PDFFemtosecond-laser-induced optical confinement with ping-pong motion.
J Chem Phys
September 2025
Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, India.
We introduce a novel method using a kilohertz (kHz) amplified 800 nm laser for the first experimental confinement of microparticles within a single beam. This study demonstrates that high-energy kHz pulses can confine 1-μm-radius polystyrene beads in water within ∼26 μm. This approach utilizes the unique properties of high-energy pulsed lasers, distinct from continuous-wave and megahertz pulsed lasers traditionally used in optical trapping.
View Article and Find Full Text PDFStudy of Ultranarrowband Silicon Nanowire Array Photodetector with Peak Spectral Responsivity at 1120 nm.
ACS Nano
September 2025
School of Microelectronics, Hefei University of Technology, Hefei 230009, China.
Near-infrared (NIR) narrowband photodetectors, featuring high sensitivity, excellent wavelength selectivity, and narrow full width at half-maximum (fwhm), enable efficient detection of specific NIR wavelengths and are widely used in optical communication, environmental monitoring, spectroscopy, and scientific research. In this study, we present a self-powered NIR photodetector based on a silicon nanowire (SiNW) array, exhibiting an ultranarrowband response centered at 1120 nm. The device employs a simple Schottky junction architecture.
View Article and Find Full Text PDFKinesin-1 is a robust motor that carries intracellular cargos towards the plus ends of microtubules. However, optical trapping studies reported that kinesin-1 is a slippery motor that quickly detaches from the microtubule, and multiple kinesins are incapable of teaming up to generate large collective forces. This may be due to the vertical (z) forces that the motor experiences in a single bead trapping assay, accelerating the detachment of the motor from a microtubule.
View Article and Find Full Text PDFUnlabelled: Homologous recombination (HR) is a DNA double-strand break repair pathway that facilitates genetic exchange and protects damaged replication forks during DNA synthesis. As a template-based repair process, the successful repair of a double-strand break depends on locating suitable homology from a donor DNA sequence elsewhere in the genome. In eukaryotes, Rad51 catalyzes the homology search in coordination with the ATP-dependent motor protein Rad54.
View Article and Find Full Text PDF