98%
921
2 minutes
20
In this paper, a compact slow-light microfiber coil resonator (MCR) is fabricated and the slow-light properties of it are analyzed and tested. Based on coupled-wave theory, a theoretical model for describing the slow-light propagation in the MCR is established. Experimentally, the MCR slow-light element is fabricated and its relative slow-light time delay is measured. The group velocity of the light pulse in the MCR slow-light element can be reduced to about 0.47c (c is the speed of light in vacuum) and the shape of the light pulse passing through the MCR is well preserved.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1364/AO.54.005619 | DOI Listing |
Biomater Adv
August 2025
Vascular Surgery, Department of General Surgery, Huashan Hospital, Fudan University, Shanghai, China; Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, China. Electronic address:
For clinical treatment of end-stage renal disease (ESRD) patients, the development of vascular grafts possessing both puncture resistance and anticoagulant properties remains crucial for arteriovenous fistula establishment. In this study, small-diameter vascular conduits were engineered through electrospinning of polyurethane (PU) microfibers, incorporating polyethylene coil reinforcement within the graft wall architecture to confer kink resistance. The microporous structure of the grafts demonstrated effective self-sealing capabilities following needle perforation.
View Article and Find Full Text PDFBiomater Sci
October 2024
Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands.
Biomacromolecules
November 2022
Department of Chemical and Biomolecular Engineering, New York University Tandon School of Engineering, Brooklyn, New York11201, United States.
The ability to engineer a solvent-exposed surface of self-assembling coiled coils allows one to achieve a higher-order hierarchical assembly such as nano- or microfibers. Currently, these materials are being developed for a range of biomedical applications, including drug delivery systems; however, ways to mechanistically optimize the coiled-coil structure for drug binding are yet to be explored. Our laboratory has previously leveraged the functional properties of the naturally occurring cartilage oligomeric matrix protein coiled coil (C), not only for its favorable motif but also for the presence of a hydrophobic pore to allow for small-molecule binding.
View Article and Find Full Text PDFPhys Rev Lett
November 2021
Department of Physics and Astronomy, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4M1, Canada.
We study the elastocapillary interaction between flexible microfibers in contact with bubbles trapped at the surface of a liquid bath. Microfibers placed on top of bubbles are found to migrate to and wrap into a coil around the perimeter of the bubble for certain bubble-fiber size combinations. The wrapping process is spontaneous: the coil spins atop the bubble, thereby drawing in excess fiber floating on the bath.
View Article and Find Full Text PDFLab Chip
June 2021
Guangdong-Hong Kong Joint Laboratory for New Textile Materials, School of Textile Materials and Engineering, Wuyi University, Jiangmen, 529020, China.
Helical structures are attracting increasing attention owing to their unique typical physical and chemical properties. However, it remains a challenge to construct atypical helical structures at the microscale. This paper proposes a continuous spinning method with a microfluidic-chip-based spinning device to engineer atypical helical microfibers.
View Article and Find Full Text PDF