With reference to Compact solid-state sensor, consider following statements

1. It aim to detect the heavy metal ions,like lead ions (Pb2) down to 0.4 parts per billion (ppb) for efficient onsite detection.
2. The sensor film was prepared by forming a composite between manganese doped zinc sulfide quantum dots and reduced graphene oxide on a glass substrate.
3. It is developed by Centre for Nano and Soft Matter Sciences (CeNS) which is an autonomous research institute under Department of Science and Technology (DST).

Select the correct statement.

• Centre for Nano and Soft Matter Sciences (CeNS) has developed a compact solid-state sensor to detect the heavy metal ions in water. It is a portable device which can help onsite detection in remote areas.
• The sensor film was prepared by forming a composite between manganese doped zinc sulfide quantum dots and reduced graphene oxide on a glass substrate.
• A team of researchers led by Dr. Pralay K. Santra at Centre for Nano and Soft Matter Sciences have developed a compact solid-state sensor to detect the heavy metal ions, e.g., lead ions (Pb2) down to 0.4 parts per billion (ppb) for efficient onsite detection.
• Centre for Nano and Soft Matter Sciences (CeNS) is an autonomous research institute under Department of Science and Technology (DST).

By: Shubham Tiwari