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Her work includes evaluating life-saving devices, protective systems and frangible bullets. In 2016, she led the TBRL team which developed less-lethal plastic bullets which have been used by Indian paramilitary forces for crowd control in Jammu and Kashmir. These plastic bullets can be used in the existing weapons used by the security forces.
In March 2019, she was conferred India's highest civilian award for women, the Narishakti Puruskar "2018", by President Ram Nath Kovind, for her contributions to the women's empowerment in defence R&D and for her work on bulletproof vests and other protective systems for India's security forces. The award was conferred at the Presidential Palace. Prime Minister Narendra Modi was present. She has also been conferred the 'Agni Award for Excellence in Self Reliance' and the 'High Energy Material Society of India (HEMSI) Team Award for Meritorious Service'. The bullets can be used in AK-47 rifles and they "reduce fatalities".
Biswas and her team have also been involved with developing frangible bullets which shatter if they hit a surface that is harder than the bullet. The application would allow sky marshals to use these bullets to shoot, or threaten to shoot, hijackers on board aircraft with the assurance that the aircraft itself would not suffer substantial damage. Air India have been using sky marshals since 1999.
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Receiving the Narishakti Puruskar