"Indian Researchers Develop Peptide-Based Piezoelectric Biomaterials for Self-Powered Medical Devices"
Piezoelectricity
property of materials to convert mechanical force into electrical energy, and vice versa.
Peptide
short chain of amino acids; the natural building block of proteins; biocompatible and biodegradable.
Piezoelectric materials convert mechanical force, pressing, bending, or stretching, into electrical energy. This property underpins a wide range of technologies: pressure sensors, medical ultrasound devices, actuators, and self-powered energy-harvesting systems. Conventional piezoelectric materials are ceramic-based. They perform well but are brittle, environmentally unfriendly, and incompatible with living tissue. This makes them unsuitable for implantable medical devices.
Nanotechnology, the manipulation of matter at the scale of 1 to 100 nanometres, has opened new pathways in biomedical research. As NCERT notes, converting bulk materials to nanoscale alters their physicochemical, optical, and electronic properties in ways that make them uniquely useful for medicine. Nanobiotechnology applies these principles to biological systems. Researchers have long sought biocompatible alternatives to ceramic piezoelectrics. Peptides, the natural building blocks of proteins, are safe, biodegradable, and compatible with human tissue. However, achieving strong piezoelectric performance from peptide-based materials had remained a long-standing scientific challenge.
India's Department of Science and Technology (DST) funds a network of autonomous institutes that drive frontier research in this space. The Centre for Nano and Soft Matter Sciences (CeNS), Bengaluru is one such institute. It collaborated with IISER Kolkata and JNCASR, Bengaluru on this research, reflecting the collaborative model India's science ecosystem increasingly relies on.
Piezoelectricity requires a specific structural condition: a non-centrosymmetric arrangement of molecules. In such arrangements, molecular dipoles align in a way that produces a net electrical charge when mechanical stress is applied. Achieving this in soft, biological materials like peptides is difficult because peptide molecules in water naturally form nanofibers that lack this ordered alignment, and therefore show no piezoelectric response.
The key insight from the CeNS-led research is that piezoelectric performance depends not on the peptide's chemical composition but on how its molecules self-assemble. By introducing just one percent of a co-solvent into the peptide solution, researchers triggered a reorganisation of the molecules into a highly ordered supramolecular arrangement. …
With reference to carbon nanotubes, consider the following statements:
1.They can be used as carriers of drugs and antigens in the human body.
2.They can be made into artificial blood capillaries for an injured part of human body.
3.They can be used in biochemical sensors.
4.Carbon nanotubes are biodegradable.
Which of the statements given above are correct?
With reference to the use of nanotechnology in health sector, which of the following statements is/are correct?
1.Targeted drug delivery is made possible by nanotechnology.
2.Nanotechnology can largely contribute to gene therapy.
Select the correct answer using the code given below.
What do you understand by nanotechnology and how is it helping in the health sector?
How can India achieve energy independence through clean technology by 2047? How can biotechnology play a crucial role in this endeavour?
Consider the following statements regarding piezoelectric materials:
1.They convert mechanical force into electrical energy.
2.A non-centrosymmetric molecular structure is a fundamental requirement for piezoelectricity.
3.Conventional ceramic piezoelectric materials are biocompatible and suitable for implantation in the human body.
4.Peptide-based piezoelectric materials are biodegradable.
How many of the above statements are correct?
With reference to the recent development in peptide-based piezoelectric biomaterials by Indian researchers, consider the following statements:
1.The piezoelectric response was activated by chemically modifying the peptide molecule itself.
2.Chiral self-assembly of peptide molecules produces a non-centrosymmetric structure required for piezoelectricity.
3.The Centre for Nano and Soft Matter Sciences (CeNS), Bengaluru is an autonomous institute under the Department of Science and Technology.
Which of the statements given above is/are correct?
Consider the following applications of piezoelectric biomaterials:
1.Powering implantable medical sensors using energy from heartbeat and breathing
2.Replacing toxic ceramic materials in conventional piezoelectric devices
3.Enabling wearable biosensors and electronic skin
4.Delivering drugs to tumour cells via the EPR effect
Which of the above are potential applications of peptide-based piezoelectric biomaterials?
Match the following nanotechnology characterisation techniques with their primary function:
List I (Technique) — List II (Primary Function)
A.Atomic Force Microscopy (AFM) — 1. Imaging surface topography at nanoscale resolution
B.Field Emission Scanning Electron Microscopy (FESEM) — 2. High-resolution imaging of surface morphology using electron beam
C.Piezoelectric coefficient measurement — 3. Quantifying efficiency of mechanical-to-electrical energy conversion
Select the correct match:
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