Reducing the contact time of droplet impacts on surfaces is crucial for various applications including corrosion prevention and anti-icing. This study aims to explore a novel strategy that greatly reduces contact time using a superhydrophobic mesh surface with multiple sets of mutually perpendicular ridges while minimizing the influence of the impacting location. The effects of the impact Weber numbers and ridge spacing on the characteristics of the impact dynamics and contact time are studied experimentally. The experimental results reveal that, for the droplet impact on mesh surfaces, ridges can segment the liquid film into independently multiple-retracting liquid subunits. The retracted subunits provide the upward driving force, which may promote the splashing or pancake bouncing of droplets. At this point, the contact time has a negligible sensitivity for the impacting position and is significantly reduced by up to 68%. Furthermore, the time, dynamic pressure, and energy criteria for triggering splashing and pancake bouncing are proposed theoretically. This work provides an understanding of the mechanism and the design guidelines for effectively reducing the contact time of the impacting droplet on superhydrophobic surfaces.
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http://dx.doi.org/10.1021/acs.langmuir.4c02004 | DOI Listing |
We collected social contact data in Greece to measure contact patterns before (January 2020) and during the COVID-19 pandemic (March 2020-October 2021) and assess the effects of social distancing over time. During lockdowns, mean daily contacts decreased to 2.8-5.
View Article and Find Full Text PDFClin Optom (Auckl)
December 2024
Eminent Ophthalmic Services, LLC, Milledgeville, GA, USA.
Purpose: The purpose of this work was to determine the comfort performance of a toric, monthly, silicon hydrogel CL (lehfilcon A; TOTAL30 for Astigmatism) over a long day of wear.
Methods: This was a 1-month, 3-visit, prospective, single-arm study. Adult, 18- to 45-year-old CL wearers with good vision who were minimally symptomatic (CLDEQ-8 scores ≤12) were enrolled.
PeerJ
December 2024
Department of Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China.
Background: Recently, there has been increasing interest in the exploration of the association between the hepatitis E virus () infection and malignancies; however, epidemiological data for infection among women with a gynecological tumors (GT) are limited. Herein, we investigated the correlation between and GT in Chinese women.
Methods: We recruited 452 women diagnosed with a primary GT and 452 healthy volunteers to investigate the possible routes and risk factors for infection.
Appl Bionics Biomech
December 2024
ASICS Trading Company Limited, Kobe, Hyogo, Japan.
This pilot study investigated the potential of a newly developed shoe design to improve gait parameters without altering muscle activity in healthy women. The shoe design features a V-shaped heel and a high-elasticity midsole, which are intended to enhance stability during heel contact and promote efficient load transfer throughout the gait cycle. Ten study participants underwent a randomized crossover design, wearing developed and general shoes during the trials.
View Article and Find Full Text PDFMater Sociomed
January 2024
Clinical Center University of Sarajevo, Sarajevo, Bosnia and Herzegovina.
Background: Considering the highly sophisticated activities and the environment in which the work is carried out. It is extremely important to establish a well-organized and efficient team that will contribute to raising the quality of professional activity through its work, and in this way influence the greater satisfaction of patients and their families, but at the same time also reduce stress levels among health professionals. The efficiency of the work is primarily correlated with the exceptional communication of the members within the team.
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