Quantum Dot Lab

10/08/2026

We extend our heartfelt congratulations to Subham Das , a PhD student from our Quantum Dot Lab, on securing a postdoctoral position under Prof. Jianbo Gao at Brock University.

We wish him continued success and fulfillment in this exciting new chapter of his research journey! 🎉

15/07/2026

We are delighted to announce that the International Conference on Halide Perovskites (HyPe-2026) to be held at the Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Bengaluru, India from 17–19 September 2026.
HyPe is a well-established conference series that brings together leading national and international researchers working in the field of halide perovskites. The conference offers an excellent opportunity for students, early-career researchers, and established scientists to present their work, exchange ideas, build collaborations with renowned experts in this emerging field.
The official conference website is now live!
Registration closed on 31st July 2026
visit:

Halide Perovskite Materials Synthesis Applications in Solar Cells, LEDs, Lasers, Photodetectors

10/07/2026

Excited to share our latest work published in the Journal of Materials Chemistry C!

Our study shows that structural symmetry controls delayed fluorescence in Mn-doped perovskite nanocrystals. We identify centrosymmetry as a key design principle for tuning excited-state dynamics, providing new insights for the development of next-generation optoelectronic materials.

📖 Read the paper here: https://doi.org/10.1039/D6TC00983B

09/05/2026

We warmly congratulate our former PhD student, Avijit Saha, on receiving the prestigious Prime Minister Early Career Research Grant (PMECRG) from the Anusandhan National Research Foundation. At the Department of Physics, Indian Institute of Technology Bhilai, his research focuses on developing eco-friendly SWIR-emitting quantum dots for advanced optoelectronic and bioimaging applications.
This achievement reflects his dedication, research excellence, and commitment to sustainable innovation.

17/04/2026

Congratulations to Subham Das
on successfully defending his doctoral thesis, titled “Study of sp–d Exchange Mechanism and Optoelectronic Energy Transfer in Dilute Magnetic Semiconductor Nanocrystals.”
Wishing him continued success in his future research and academic endeavors.

04/04/2026

We extend our heartfelt congratulations to Gauttam Dash , a PhD student from our Quantum Dot Lab, on securing a postdoctoral position under Prof. Jianbo Gao at Brock University. We wish him continued success in this exciting new chapter of his research journey!

31/03/2026

We are seeking enthusiastic PhD candidates to join our team. If you have completed a Master's degree (M.Sc. or MS) in Physics or Chemistry from an Indian university and hold a valid NET/GATE score or INSPIRE Fellowship, you can apply here:

https://www.jncasr.ac.in/admission/degree-programmes

Application deadline: 10th April 2026

If you're interested in our lab, we encourage you to check out our lab poster for insights into our research activities.

To learn more about our work, visit Prof. Ranjani Viswanatha's homepage:
https://www.jncasr.ac.in/faculty/rv

We are pleased to celebrate the 15th anniversary of our laboratory, marking a decade and a half of scientific innovation, collaboration, and discovery. A video capturing this milestone can be viewed here: https://youtu.be/-la26JmRI-c?si=DtzR3JiZMwMM6iL4

For any queries, feel free to reach out via email: Quantum Dot Lab:[email protected]
Prof. Ranjani Viswanatha: [email protected]

31/03/2026

Happy to share that our work has been published in Small!

In this study, we explore the emergence of strong chiroptical, ferroelectric, and magneto-optical responses in CsPbBr₃ nanorods. Our findings reveal a fascinating interplay between quantum confinement, strain-induced lattice distortion, and local symmetry breaking—even within an otherwise centrosymmetric structure.

This work provides new insights into designing multifunctional materials with coupled optical and electronic properties, opening exciting possibilities for next-generation optoelectronic and spintronic applications.

This work is led by first author Suhas Kt , along with Tanu Sharma, Lakshmi Madathil, Pavitra N. Shanbhag, Azat Khadiev, Adrija Ghosh, Tapas Kumar Maji, and Ranjani Viswanatha .

Grateful to all collaborators who made this possible!

Read the full article here: https://onlinelibrary.wiley.com/doi/full/10.1002/smll.202514507

This work reveals intrinsic lattice-driven chirality in highly quantum-confined CsPbBr3 nanorods, originating from strain-induced PbBr6 octahedral distortion rather than chiral ligands. Exceptionally...

26/03/2026

Prof. Ranjani Viswanatha has been honored at a recent felicitation event organized by the Honorable Minister Shri Krishna Byre Gowda Krishna Byre Gowda and his team.

This well-deserved recognition reflects her dedication, leadership, and continuous inspiration.

Congratulations on this wonderful achievement.

12/01/2026

The Quantum Dot Lab, JNCASR proudly celebrates 15 years of scientific exploration, innovation, and academic excellence.

Founded with a vision to understand and engineer matter at the nanoscale, the lab has evolved into a dynamic research hub advancing both fundamental and applied science of semiconductor nanomaterials. Our work spans quantum confinement physics, doped and alloyed nanocrystals, magneto-optical phenomena, and optoelectronic energy transfer contributing to foundational insights as well as emerging technologies.

At the heart of the Quantum Dot Lab is a strong culture of scientific rigor, creativity, and interdisciplinary collaboration. Over the years, the lab has trained a diverse community of students and researchers in advanced synthesis, spectroscopy, and theoretical analysis. Many of our alumni now contribute to leading academic institutions, research laboratories, and industries worldwide.

As part of the 15-year celebrations, we were delighted to host an online alumni meet, bringing together former and current members of the lab from across the globe to reconnect, share experiences, and reflect on a shared journey of discovery.

To commemorate this milestone, we have also launched a special YouTube video capturing memories, milestones, and voices from the Quantum Dot Lab community. Watch the 15-Year Anniversary Video: https://youtu.be/-la26JmRI-c?si=lbYnr7yxOjMLeJbf

As we reflect on the past 15 years, we look ahead with optimism and ambition. The challenges of the future from quantum materials to next-generation optoelectronics, call for the same spirit that has defined our journey: thoughtful inquiry, collaborative effort, and an unwavering commitment to excellence.

We extend our sincere gratitude to our students, alumni, collaborators, mentors, and institutional supporters whose contributions form the foundation of the lab’s enduring legacy.

Here’s to 15 years of discovery and to the many breakthroughs yet to come.