The pricing is transparent, and the free plan is one of the most powerful no-cost POS systems we’ve seen. It also earned top spots in NerdWallet's best POS systems roundup and best business ...

I got my start in this industry back when smartphones were still finding their bearings. Each new version of Android ushered in a major visual rede ...

Shaanxi Applied Physics and Chemistry Research Institute, Xi’an 710061, P. R. China State Key Laboratory for Manufacturing Systems Engineering, Xi’an Jiaotong University, Xi’an 710049, P. R. China ...

These voltages, and the corresponding electric fields present in such films, result from a collective and spontaneous orientation of molecular dipoles throughout the film during film growth and ...