Double-walled carbon nanotubes (DWCNTs) consist of two coaxially aligned single-walled carbon nanotubes (SWCNTs), and previous sorting methods only achieved outer-wall electronic-type selectivity.

Separation techniques and principles that were used by early gold prospectors are still used today in the mining industry. Some of these methods, transferred to the recycling industry, have ...

We can now tell the difference between a wide range of plastic types and thereby separate plastics according to their chemical composition. This is absolutely ground-breaking and it will increase the ...