Publications by authors named "Yicheng Xiao"
Article Synopsis
- - Elastocaloric cooling is a solid-state technology aimed at enhancing cooling efficiency while reducing energy consumption, addressing global warming and energy shortages.
- - A new heat pump design using fiber twisting and periodic non-linear stress improves cooling performance, achieving a high coefficient of performance (COP of 30.8) and low hysteresis work.
- - This innovative design significantly extends the device's cycle life to 14,752 cycles and delivers effective cooling with a temperature span of 25.6 K and a specific cooling power of 1850 W/kg.
High Cycle-Life Twistocaloric Cooling of Poly-p-Phenylene Benzodioxole Fibers.
Macromol Rapid Commun
December 2023
Article Synopsis
- There is a growing need for efficient solid-state cooling technologies and materials that can withstand many cycles of use.
- This study introduces the use of poly-p-phenylene benzodioxole (PBO) fibers for elasto- and twistocaloric cooling methods, achieving impressive temperature drops of -0.4 K and -1.3 K through stretching and twisting, respectively.
- The PBO fibers demonstrate a significant cooling effect of -3.7 K at 35% strain and an outstanding cycle life of 200,000 cycles, along with a strain-sensitive color change feature when coated with liquid crystallite dyes.
Somatosensitive soft crawling robotics is highly desired for load carrying and multi-terrain locomotion. The motor-driven skeleton robots and pneumatic robots are effective and well-developed, while the bulk size, rigidity, or complexity limit their applications. In this paper, a somatosensitive film soft crawling robot driven by an artificial muscle was developed, which can carry heavy loads and crawl on multiple terrains.
View Article and Find Full Text PDFTensile and torsional artificial muscles from biocompatible and biodegradable materials are highly desired for soft robotics, sensors, and controllers in bio-related applications. Twisted fibers can be used to prepare tensile and torsional artificial muscles, while torsional tethering is always required to avoid release of the inserted twist, which adds complexity to the device design. Moreover, the tuning of the reversibility of twisted fiber artificial muscles has not been realized.
View Article and Find Full Text PDFErgosta-7, 9 (11), 22-trien-3β-ol (EK100) was isolated from , which has been used as a traditional anti-inflammatory medicine. EK100 has been reported to attenuate inflammatory diseases, but its anti-inflammatory mechanism is still unclear. We were the first to investigate the effect of EK100 on the Toll-like receptor 4 (TLR4)/nuclear factor of the κ light chain enhancer of B cells (NF-κB) signaling in the lipopolysaccharide (LPS)-stimulated RAW264.
View Article and Find Full Text PDFHigher-efficiency, lower-cost refrigeration is needed for both large- and small-scale cooling. Refrigerators using entropy changes during cycles of stretching or hydrostatic compression of a solid are possible alternatives to the vapor-compression fridges found in homes. We show that high cooling results from twist changes for twisted, coiled, or supercoiled fibers, including those of natural rubber, nickel titanium, and polyethylene fishing line.
View Article and Find Full Text PDF[Subchondral drilling method combined with gum-bletilla complex to repair articular cartilage defects].
Zhongguo Zhong Yao Za Zhi
February 2018
Article Synopsis
- Two types of articular cartilage defect models (A and B) were created using adult New Zealand white rabbits, each repaired with different composite scaffolds for comparison.
- Group A utilized scaffolds with seed cells, while Group B used scaffolds without seed cells, both incorporating gum-bletilla and Pluronic F-127.
- Post-surgery evaluations at 4, 12, and 24 weeks showed successful cartilage repair in both groups, with gum-bletilla proving essential for enhanced healing outcomes.