Donghua University

About: Donghua University is a education organization based out in Shanghai, China. It is known for research contribution in the topics: Fiber & Nanofiber. The organization has 21155 authors who have published 21841 publications receiving 393091 citations. The organization is also known as: Dōnghuá Dàxué & China Textile University.

Durability of nano ZnO antibacterial cotton fabric to sweat

Abstract: In this article, an innovative method was put forward to evaluate the endurance of nano ZnO finished fabrics to sweat. The atomic absorption spectrophotometer was used to determine the concentration of zinc in immersion liquor, and at the same time, SEM experiments and biocidal tests were chosen to characterize the antibacterial performance. Half-life time (t(1/2)) of zinc concentration on the fabric was introduced to evaluate the durability to sweat. The results indicated that nano ZnO antibacterial cotton fabric was relatively sensitive to acid artificial sweat while durable in saline or alkaline solution, the t(1/2) exceeded 3000 min in them. SEM characterization and biocidal tests showed the same behavior. (c) 2006 Wiley Periodicals, Inc. J Appl Polym Sci 103: 412416, 2007

Statistical Mechanics where Newton's Third Law is Broken

Abstract: There is a variety of situations in which Newton’s third law is violated. Generally, the action-reaction symmetry can be broken for mesoscopic particles, when their effective interactions are mediated by a nonequilibrium environment. Here, we investigate different classes of nonreciprocal interactions relevant to real experimental situations and present their basic statistical mechanics analysis. We show that in mixtures of particles with such interactions, distinct species acquire distinct kinetic temperatures. In certain cases, the nonreciprocal systems are exactly characterized by a pseudo-Hamiltonian; i.e., being intrinsically nonequilibrium, they can nevertheless be described in terms of equilibrium statistical mechanics. Our results have profound implications, in particular, demonstrating the possibility to generate extreme temperature gradients on the particle scale. We verify the principal theoretical predictions in experimental tests performed with two-dimensional binary complex plasmas.