Phase synchronization of a CO2 laser with feedback, exhibiting homoclinic chaos, is realized by a tiny periodic perturbation of a control parameter. The deviations of the modulation frequency from the optimal one induce phase slips, thus yielding an imperfect phase synchronization. Based on the information of these phase slips, the modulation frequency can be readjusted until the phase slips ar...

In order to attain high precision positioning and navigation results with GPS, cycle slips must be correctly repaired at the data preprocessing stage. Over the past decade a number of methods have been developed to detect and repair cycle slips. These methods invariably require user intervention for problematic cycle slips in portions of data, tuning of input parameters to data, or introduction...

The recent acquisitions of archaeological findings of bamboo slips inmany institutions inChina provide us a good significance for the study of development of mathematics in Ancient China. These includes the Tsinghua University (arithmetic table, dated from the Warring States period), the YueluAcademy (bamboo slips of the book “mathematics”, QinDynasty), the BeijingUniversity (bamboo slips of ma...

Injuries associated with slips and falls continue to be a significant burden to society, both in terms of human suffering and economic losses. Fall accidents are the second leading cause of accidental death in the United States (after motor vehicle accidents), resulting in more than 25,000 fatalities in 2009 and accounting for nearly 9 million visits to the emergency department (National Safety...

We aimed to create a slippery liquid-infused enamel surface with antibiofouling property to prevent dental biofilm/plaque formation. First, a micro/nanoporous enamel surface was obtained by 37% phosphoric acid etching. The surface was then functionalized by hydrophobic low-surface energy heptadecafluoro-1,1,2,2-tetra- hydrodecyltrichlorosilane. Subsequent infusion of fluorocarbon lubricants (Fl...

The fabrication and advanced function of large area biomimetic superhydrophobic surfaces (SHS) and slippery lubricant-infused porous surfaces (SLIPS) are reported. The use of roll-to-roll nanoimprinting techniques enabled the continuous fabrication of SHS and SLIPS based on hierarchically wrinkled surfaces. Perfluoropolyether hybrid molds were used as flexible molds for roll-to-roll imprinting ...