Tag Archives: detection

Can a high-tech sniffing device help keep us safe?

Science stinks. So thought Megan Harries as she measured drops of putrescine and cadaverine — the chemicals that give decomposing corpses their distinctive, terrible odour — into glass vials. She then placed the vials on the floor of a shipping container, walked outside, and closed the door behind her. Harries, …

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Ultrasensitive toxic gas detector

Researchers from the School of Microelectronics in Tianjin University have discovered a two-step sputtering and subsequent annealing treatment method to prepare vertically aligned WO3-CuO core-shell nanorod arrays which can detect toxic NH3 gas. Over the years, WO3 has received considerable attention among the numerous transition metal oxides as a wide …

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Competition seeks technology to help tackle knife crime

An upcoming Defence and Security Accelerator (DASA) competition is seeking innovative technologies and approaches to help tackle knife crime. Although crime in general has fallen rapidly in the UK over the past 20 years, some types of violent crime recorded by the Police have increased. In 2017, knife crime rose …

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