iit bombay, iit bombay research, iit bombay research department, iit b, iit, eye lenses
The lens­es can iden­ti­fy fake cur­ren­cy notes. (Rep­re­sen­ta­tion­al)

Researchers at IIT-Bom­bay said they have devel­oped a robust and inex­pen­sive tech­nique to man­u­fac­ture small lens­es that have the abil­i­ty to pro­vide an in-depth look into our blood cells or iden­ti­fy fake cur­ren­cy notes.

The tech­nique, by Pro­fes­sor Soumyo Mukher­ji of Depart­ment of Bio­science and Bio­engi­neer­ing along with Deb­jani Paul and Dr Karunesh­wari Karunakaran, can allow any­one to make such a lens for under Rs 2.

“Tra­di­tion­al­ly, lens­es have been fab­ri­cat­ed by pol­ish­ing and grind­ing glass or mould­ing plas­tic against a tem­plate. These meth­ods are expen­sive as they require skilled work­man­ship and cost­ly equip­ment. How­ev­er, we devel­oped an alter­na­tive method using flu­ids,” said Mukher­ji.

The researchers have used these lens­es to devel­op a  “smart­phone micro­scope” — the lens is placed on a smart­phone cam­era.

The micro­scope has a res­o­lu­tion of 1.4 microme­tres, com­pa­ra­ble to an opti­cal micro­scope, and was used to detect pollen grains on a slide and micro-pat­terns on ban­knotes. The lens­es also have a wide range of bio­med­ical appli­ca­tions.

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