Impact of tourism industry, globalization, and technology innovation on ecological footprints in G-10 countries

In the past couple of years, most of the countries observed an increase in the size of their ecological footprints. Therefore, researchers and policymakers are now more focused on the potential drivers through which the ecological deficiency can be reduced. In the same context, this study evaluates international tourism, globalization, and technology innovation effects on the ecological footprints of G-10 countries over the period of 1995–2019. This study initially applied second-generation crosssectional dependency, unit root, and cointegration tests. The long-run and short-run estimates were obtained through the Cross-Sectional ARDL method. The study’s empirical findings demonstrate that tourism, globalization, and economic growth significantly contributed to ecological footprint, while technology innovation reduced the environmental burden, thus leads to a decline in ecological footprints of sample countries. These results suggest the use of alternate energy resources and advanced technology in the tourism industr

Multifocal laser direct writing through spatial light modulation guided by scalable vector graphics

Multifocal laser direct writing (LDW) based on phase-only spatial light modulator (SLM) can realize flexible and parallel nanofabrication with high throughput potential. In this investigation, a novel approach of combining two-photon absorption, SLM and vector path guided by scalable vector graphics (SVG) has been developed and tested preliminarily, for fast, flexible and parallel nanofabrication. Three laser focuses are independently controlled with different paths, which are according to SVG, to optimize fabrication and promote time efficiency. The minimum structure width can be as low as 74 nm. Accompanied with a translation stage, a carp structure of 18.16 $\mu$m by 24.35 $\mu$m has been fabricated. This method shows the possibility of developing LDW techniques towards full-electrical system, and provides a potential way to efficiently engrave complex structures on nanoscales

A Review of Selective Laser Sintering of Wood-Plastic Composites

Eco-friendly wood-plastic composites were firstly proposed to be used as the raw materials of rapid prototyping in 2002, and successfully applied in Selective Laser Sintering (SLS) two years later. These composites were mixed by different kinds of wood powder, plastic powder and other additives. Different from polymer, ceramics, metals and their composites, wood-plastic composites are new types of sustainable and low-price feedstock of SLS. This paper presents the development of the research of wood-plastic composites applied to SLS over the past decade. It contains the preparation and characterizations of wood-plastic composites, the study of temperature fields and molecular dynamics simulation of sintering wood-plastic composites, the effects of processing parameters on the forming accuracy and mechanical properties of sintered parts, and the post-treating process of wood-plastic composite parts. At last, it introduces the application fields of laser sintered wood-plastic composites parts.Mechanical Engineerin