Breakthrough Enables Engineering of Materials for Quantum Tech
Technology

Breakthrough Enables Engineering of Materials for Quantum Tech

Researchers at the Indian Institute of Science (IISc), Bangalore, have developed a method to control phonon properties by adjusting twist angles between layers of two-dimensional (2D) materials. This breakthrough could pave the way for engineering materials vital for photonic, quantum and electronic applications.

Phonons are energy waves travelling through a crystal lattice when atoms vibrate, much like ripples forming in a pond. Their properties are crucial for developing optoelectronics and tunable photonic devices. Controlling these properties has been a major research focus.

The study, published in ACS Nano, demonstrates that varying twist angles between one degree and seven degrees in tungsten diselenide (WSe2) homobilayers can induce splitting in phonon modes. Raman spectroscopy revealed temperature-driven changes in phonon behaviour, particularly at temperatures below fifty Kelvin, highlighting complex electron-phonon interactions and phonon anharmonicity.

The findings show how moiré superstructures, formed when overlapping 2D lattices align at slight angles, influence both phononic and electronic properties. This work used the Raman spectroscopy facility established with support from the Fund for Improvement of Science and Technology Infrastructure (FIST) programme of the Department of Science and Technology (DST).

The research opens new possibilities for designing materials suited to emerging quantum technologies.

Source: Press Information Bureau Delhi 

Researchers at the Indian Institute of Science (IISc), Bangalore, have developed a method to control phonon properties by adjusting twist angles between layers of two-dimensional (2D) materials. This breakthrough could pave the way for engineering materials vital for photonic, quantum and electronic applications.Phonons are energy waves travelling through a crystal lattice when atoms vibrate, much like ripples forming in a pond. Their properties are crucial for developing optoelectronics and tunable photonic devices. Controlling these properties has been a major research focus.The study, published in ACS Nano, demonstrates that varying twist angles between one degree and seven degrees in tungsten diselenide (WSe2) homobilayers can induce splitting in phonon modes. Raman spectroscopy revealed temperature-driven changes in phonon behaviour, particularly at temperatures below fifty Kelvin, highlighting complex electron-phonon interactions and phonon anharmonicity.The findings show how moiré superstructures, formed when overlapping 2D lattices align at slight angles, influence both phononic and electronic properties. This work used the Raman spectroscopy facility established with support from the Fund for Improvement of Science and Technology Infrastructure (FIST) programme of the Department of Science and Technology (DST).The research opens new possibilities for designing materials suited to emerging quantum technologies.Source: Press Information Bureau Delhi 

Related Stories

Gold Stories

Next Story
Resources

NCC Founder and Padma Shri Awardee AVS Raju Passes Away at 89

Dr Alluri Venkata Satyanarayana Raju, founder and Chairman Emeritus of NCC Limited and a Padma Shri awardee, passed away in Hyderabad on 13 October 2026. He was 89.Born on 18 April 1937 in Antarvedipalem village in Andhra Pradesh's erstwhile East Godavari district, Raju began his entrepreneurial journey in 1956. He established Nagarjuna Construction Company (NCC) Limited in 1978, which subsequently emerged as one of India's leading construction and infrastructure companies.Under his leadership, NCC became a public limited company in 1990 and expanded into one of India's prominent listed constr..

Next Story
Infrastructure Transport

Embraer to Acquire 51 Per Cent Stake in Mahindra Aerospace Arm

Brazilian aerospace major Embraer will acquire a 51 per cent equity stake in Novavayu Aerospace, a step-down subsidiary of Mahindra and Mahindra, under an Investment Agreement notified by the automobile company in an exchange filing. The transaction will give Embraer control of the aerospace business. Following completion of the acquisition, Novavayu Aerospace will cease to be a wholly owned subsidiary and become an associate of Mahindra Defence Systems, which is a step-down wholly owned subsidiary of Mahindra and Mahindra. The agreement is expected to be completed on or before December 1. Mah..

Next Story
Infrastructure Urban

RBI Opens Special Dollar Window for Three State-Run OMCs

The Reserve Bank of India (RBI) has opened a special facility to meet the entire daily US dollar requirements of three public sector oil marketing companies (OMCs), in a move aimed at easing pressure on the Indian rupee. The facility will take effect on October 12, 2026, and remain available until further notice. Indian Oil Corporation, Hindustan Petroleum Corporation and Bharat Petroleum Corporation are eligible to use the arrangement. Under the facility, the RBI will sell US dollars to the three companies through designated banks, allowing them to meet their oil-import payments without sourc..

Advertisement

Subscribe to Our Newsletter

Get daily newsletters around different themes from Construction world.

STAY CONNECTED

Advertisement

SPECIAL OFFER
QR Code