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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8064242 | PMC |
| http://dx.doi.org/10.1503/cjs.2164208 | DOI Listing |
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Self-induced optical non-reciprocity.
Light Sci Appl
January 2025
CAS Key Laboratory of Quantum Information & CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, 230026, China.
Non-reciprocal optical components are indispensable in optical applications, and their realization without any magnetic field has attracted increasing research interest in photonics. Exciting experimental progress has been achieved by either introducing spatial-temporal modulation of the optical medium or combining Kerr-type optical nonlinearity with spatial asymmetry in photonic structures. However, extra driving fields are required for the first approach, while the isolation of noise and the transmission of the signal cannot be simultaneously achieved for the other approach.
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- Spintronic terahertz emitters (STEs) are powerful terahertz sources that can operate across a wide range of pumping frequencies, yet their performance is ultimately limited by their optical damage threshold.
- Recent advancements in technology require STEs to pump at higher megahertz rates rather than the traditional kilohertz rates, highlighting a gap in research on this topic.
- The study introduces a new classification of the optical damage threshold based on repetition rates and identifies temperature-driven inter-layer diffusion as the main failure cause, offering insights for improving STE performance in future applications.
A novel nucleic acid extraction system integrating a switching valve-assisted microfluidic cartridge and a constant pressure pump.
Anal Chim Acta
November 2024
Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, Anhui, China. Electronic address:
Background: Nucleic acid extraction (NAE) is essential in molecular diagnostics, genetic engineering, and DNA sequencing. While advances in switching valve-assisted, self-contained microfluidic (SM) cartridges have improved the NAE processes, challenges persist in streamlining workflows, reducing processing times, and enhancing multi-target detection. Achieving these objectives requires precise control of on-chip fluid dynamics and efficient transfer of nucleic acid solutions (NAS) to detection areas.
View Article and Find Full Text PDFHumans and non-humans alike often make choices to gain information, even when the information cannot be used to change the outcome. Prior research has shown the anterior cingulate cortex (ACC) is important for evaluating options involving reward-predictive information. Here we studied the role of ACC in information choices using optical inhibition to evaluate the contribution of this region during specific epochs of decision making.
View Article and Find Full Text PDFIntervertebral disc deformation in the lower lumbar spine during object lifting measured in vivo using indwelling bone pins.
J Biomech
November 2024
ETH Zurich, Laboratory of Biomechanics, Zurich, Switzerland.
Object lifting is often categorized into squat and stoop techniques, with the former believed to protect the back by maintaining a neutral spine, and the latter considered harmful due to spinal flexion. Despite the widespread promotion of these beliefs, there is no evidence to support such dichotomy, as spinal flexion is not conclusively linked to low back pain. This study aimed to investigate intervertebral disc deformation in the lower lumbar spine during squat and stoop lifting using indwelling bone pins.
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