Ajay Dhar

Title: Innovations of Ajay Dhar in Permanent Magnet and Thermoelectric Materials

Introduction

Ajay Dhar is a notable inventor based in New Delhi, India. He has made significant contributions to the field of materials science, particularly in the development of cost-effective alternatives to rare-earth permanent magnets and advanced thermoelectric materials. With a total of 2 patents, his work is paving the way for more sustainable and economically viable technologies.

Latest Patents

One of Ajay Dhar's latest patents is focused on "Boron doped manganese antimonide as a useful permanent magnet material." This invention addresses the high costs associated with rare-earth elements used in modern permanent magnets. The new material exhibits good magnetic properties while being free from rare-earth elements, making it a cost-effective alternative. The synthesis process involves a combination of high energy ball milling, arc melting under an argon atmosphere, and annealing, resulting in improved magnetic properties compared to traditional manganese antimonide.

Another significant patent is for "Nanostructured copper-selenide with high thermoelectric figure-of-merit and process for the preparation thereof." This invention presents a p-type copper-selenide as a cost-effective thermoelectric material with a high figure-of-merit of 2 at 973 K. The synthesis process includes high energy ball milling followed by reaction sintering under pressure, leading to a material that retains its nanoscale features and achieves a density of 99.9% of theoretical density.

Career Highlights

Ajay Dhar is affiliated with the Council of Scientific and Industrial Research, where he conducts research and development in advanced materials. His innovative work has garnered attention in the scientific community, contributing to the advancement of sustainable technologies.

Collaborations

Ajay has collaborated with notable coworkers such as Ramesh Chandra Budhani and Nidhi Singh, enhancing the research output and innovation in his projects.

Conclusion

Ajay Dhar's contributions to the fields of permanent magnets and thermoelectric materials highlight his role as a forward-thinking inventor. His work not only addresses current technological challenges but also paves the way for future innovations in sustainable materials.