Collection of scientific works Nanosystems, nanomaterials, nanotechnologies
Year 2026 Volume 24, Issue 2
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Abhigyan GANGULY1, Sandipan BISWAS1, Nitai PAITYA1, Shivnath GHOSH1, and Siddhartha Sankar NATH2

1Brainware University, 398, Ramkrishnapur Rd., IN-700125 Kolkata, India
2Assam University, IN-788001 Silchar, Assam, India

Effect of Swift Heavy-Ion Irradiation on ZnS Quantum Dots

469–475 (2026)

PACS numbers: 61.05.cp, 61.82.Rx, 68.37.Og, 78.40.Fy, 78.67.Hc, 81.07.Ta, 82.35.Np

Received 17 February, 2025

The effect of high-energy ion beams (swift heavy ions) on ZnS quantum dots embedded in a polyvinylpyrrolidone (PVP) matrix is studied. A 100 MeV oxygen-ion beam is chosen for the irradiation experiment with doses of 2⋅1011 and 4⋅1011 ions/cm2. As the ion dose increases, the optical absorption edge of the irradiated quantum dots shows a slight red shift compared to the unirradiated (virgin) samples. This shift suggests a minor change in the particle size due to ion irradiation, which is further confirmed by high-resolution transmission electron microscopy images.

KEY WORDS: ZnS, quantum dots, swift heavy ions, irradiation, nanotechnology

DOI: https://doi.org/10.15407/nnn.24.02.0469

Citation:
Abhigyan Ganguly, Sandipan Biswas, Nitai Paitya, Shivnath Ghosh, and Siddhartha Sankar Nath, Effect of Swift Heavy-Ion Irradiation on ZnS Quantum Dots, Nanosistemi, Nanomateriali, Nanotehnologii, 24, No. 2: 469–475 (2026); https://doi.org/10.15407/nnn.24.02.0469

Acknowledgments:
The authors would like to thank Central Instrument Lab (CIL), Assam University, Assam, India for providing the instrumental set up for the experiment.

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