Which structural arrangement is the fundamental requirement for piezoelectricity, according to the study?
- A.A centrosymmetric crystal structure
- B.An amorphous structure with no order
- C.A non-centrosymmetric structure
- D.A body-centred cubic structure
Correct answer
Explanation
The correct answer is a non-centrosymmetric structure. The release explains that controlled chiral self-assembly aligns the molecular dipoles into such a structure, and calls it a fundamental structural requirement for piezoelectricity. Option A names the exact opposite and is the distractor a careless reader picks, since the two words differ by one prefix; a centrosymmetric arrangement cancels the dipoles and gives no piezoelectric response. Option B is wrong because the material's performance came precisely from a highly ordered supramolecular arrangement, not from disorder. Option D names a crystal lattice type from general chemistry that the release never mentions. The practical outcome is worth attaching to the term: the engineered peptide nanomaterials reached a piezoelectric coefficient of nearly 30 pm per volt, and such materials could one day power wearable electronics, implantable sensors, electronic skin and biosensors from body movement alone.
Read the full article: CeNS Bengaluru Turns Peptides Into Piezoelectric Biomaterials
Practice Questions
Which institute led the research that made peptides strongly piezoelectric?
- A.Centre for Nano and Soft Matter Sciences, Bengaluru
- B.Indian Institute of Science Education and Research, Kolkata
- C.Jawaharlal Nehru Centre for Advanced Scientific Research
- D.Indian Institute of Chemical Technology, Hyderabad
Show answer
The release names it as the institute whose researchers took up peptides, and the work was led there by Dr Goutam Ghosh with his doctoral scholar Aparna Ramesh.
Read the full explanation →How did the researchers switch on a strong piezoelectric response in the peptide material?
- A.By changing the chemical composition of the peptide
- B.By adding one per cent of a suitable co-solvent
- C.By coating the peptide with a ceramic layer
- D.By heating the peptide above 500 degrees Celsius
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The team found that in water the peptide molecules form nanofibers and show no piezoelectric response. Introducing just that small share of a co-solvent reorganised the molecules into a highly ordered supramolecular arrangement, and the piezoelectric response switched on at once.
Read the full explanation →As of 6 November 2026, how many equipment items were listed on the I-STEM portal?
- A.4,044
- B.18,250
- C.31,540
- D.45,000
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As of 6 November 2026, the day its API integration with the Startup India Portal was launched, I-STEM listed 31,540 equipment items across 4,044 registered institutions, giving researchers and innovators a large national pool of scientific resources.
Read the full explanation →Who chaired the launch of the API integration between the Startup India and I-STEM portals on 6 November 2026?
- A.Dr. Parvinder Maini
- B.Prof. Ajay Kumar Sood
- C.Ateesh Kumar Singh
- D.Dr. Vishal Choudhary
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He described the integration as an institutional convergence that can lower R&D costs, avoid duplication of capital-intensive facilities and raise the use of publicly funded infrastructure.
Read the full explanation →What does the acronym I-STEM, whose portal was integrated with the Startup India Portal in November 2026, stand for?
- A.Indian Scheme for Technology and Engineering Mentorship
- B.Indian Science, Technology and Engineering Facilities Map
- C.Integrated Startup Technology Enablement Mission
- D.Indian Society for Technology, Engineering and Mathematics
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I-STEM is the portal that maps scientific equipment and research facilities across academic and research institutions so that they can be shared.
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