Ciphers and invisible ink – many of us experimented with these when we were children. A team of Chinese scientists has now developed a clever, high-tech version of "invisible ink". As reported in the ...

New Delhi, Oct 26 (IANS) Indian scientists have developed a highly stable and non-toxic security ink from luminescent (spontaneously light-emitting) nano-materials to combat the counterfeiting of ...

LUCKNOW Shiv Nadar University on Sunday announced that its research team has created a unique ‘security ink’. This ink is not visible under normal lighting conditions, but the inked data can be seen ...

Researchers at the CSIR-National Physical Laboratory have developed a special security ink to prevent counterfeiting of currency notes and fake printing of passports. "Discovery of ink to curb fake ...

After writing the characters, the paper is allowed to dry at ambient conditions for four hours. (Reuters) Scientists at Shiv Nadar University here have developed a low-cost security ink that may help ...

A novel security ink that emits intense red colour when exposed to 254 nm wavelength UV and emits green colour soon after the UV source is turned off has been synthesised by a team of researchers from ...