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In micro- and nanotechnology, highly precise components with tall, narrow structures (high aspect ratios) made from semiconductor materials like silicon are important. A promising fabrication method is gas-phase metal-assisted chemical etching (MacEtch). In this plasma-free proce

It doesn’t have to be this way. We know what needs to be doneDisturbing news about our water resources is now constant and unrelenting. In just the past few weeks, media have reported that Puerto Rico is suffering a deep water crisis as severe drought has cut water supplies to thousands. The Rhine and Po rivers in Europe are at record low levels. The seven states sharing the Colorado River in the US are fighting over unprecedented shortages, while its major reservoirs have shrunk to th

Microplastics are in everything, especially your coffee. A new generation of plastic-free drip coffee brewers is trying to change this. Mais do que repetir a manchete, o ponto aqui e entender o que essa mudanca revela e por que ela merece atencao.