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Lift-off Nanocontact printing: By first using Silicon lift-off stamps [13] and later low cost polymer lift-off stamps [14] and contacting these with an inked flat PDMS stamp, nanopatterns of multiple proteins or of complex digital nanodot gradients with dot spacing ranging from 0 nm to 15 um apart were achieved for immunoassays and cell assays ...
Deaths and injuries are frequently reported, and pollution has caused respiratory illness and eye problems. One report found that ten people had died at the smelter between 2020 and 2023. Two workers were killed on the fourth day of the strike. [4] A government official said they had little power to enforce safety regulations in the industry. [4]