Their breakthrough technology, based on formamidinium perovskite and plasmonic nanoparticles, exhibits enhanced light detection capabilities, with significant potential applications across healthcare, environmental monitoring, and solar energy industries.

Publish

The research, published in the prestigious ACS Applied Materials & Interfaces journal, was co-authored by Prof. P. K. Giri, Department of Physics, and his research scholars, Mr. Debabrata Sahu, Mr. Subhankar Debnath, and Mr. Sirsendu Ghosal, at IIT Guwahati.

The formamidinium-based perovskite used in this study is recognized for its better stability and high light conversion efficiency, say sources from IIT Guwahati.

However, enhancing its light absorption and electrical performance while keeping production costs low has been a challenge, say sources from IIT Guwahati.

IIT Guwahati research team

To address this, the IIT Guwahati research team integrated an array of 2D printed plasmonic nanoparticles—tiny particles made of noble metals like silver (Ag)—into their perovskite photodetector.

These Ag nanoparticles array help focus light onto the perovskite layer through a process called localized surface plasmon resonance (LSPR), greatly boosting light absorption and efficient photodetection, says IIT Guwahati research team.

By incorporating 2D printed plasmonic nanoparticles into the design, we have significantly enhanced the device’s performance while ensuring scalability and cost-effectiveness, say sources from IIT Guwahati.

Technique

The team used a specialized microprinting technique to precisely arrange the silver nanoparticles, improving the device’s sensitivity while making the manufacturing process scalable and economical.

The photodetector remains stable under normal environmental conditions, ensuring durability for practical applications across various industries, say sources from IIT Guwahati.

Transform

This photodetector innovation could transform industries by improving medical imaging, enhancing environmental monitoring accuracy, and boosting solar energy efficiency—all through cost-effective production.

It paves the way for wider real-world applications and addresses key global challenges, say IIT Guwahati research team.

They cover all the major engineering, science, healthcare, management, and humanities disciplines, offering BTech, BDes, BSc(Hons), MA, MDes, MTech, MSc, MS(R), MBA and PhD programmes.

The institute offers a residential campus to 455 faculty members and more than 8,600 students at present.

IIT Guwahati has retained the 7th position among the best engineering institutions of the country, 9th position in ‘Overall’ and 10^th position in ‘Research’ Categories in the ‘India Rankings 2024’ declared by the National Institutional Ranking Framework (NIRF) of the Union Ministry of Education.

IITG has achieved rank 87 in the SDG 9 (Industry, Innovation, and Infrastructure) globally in the Times Higher Education (THE) Impact Rankings 2024 and is the only academic institution in India that occupied a place among the top 100 world universities – under 50 years of age – ranked by London-based Times Higher Education (THE) in 2014 and continues to maintain its superior position even today in various International Rankings.

IITG gained rank 32 globally in the ‘Research Citations per Faculty’ category and overall 344 rank in the QS World University Rankings 2025.

Among other frontier areas of research and innovation, IITG is working towards augmenting critical science research initiatives in Genomics, Developmental Biology, Health Care and Bioinformatics and Flexible Electronics, among numerous other areas.

Also Read – IIT Guwahati innovators develop great customizable furniture

Those who are wishing to join management courses in XLRI (Xavier School of Management) can concentrate on this exam which is one of the most popular ones in the country.

Those who take up XAT 2025 Registration from 28 September 2024 onwards, can choose to write exam from the new test centers.

The Newly Added Test Centers Are: Ajmer, Aligarh, Anantapur, Arrah, Baddi, Balasore, Bareilly, Bhagalpur, Bikaner, Bilaspur, Chikkaballapur, Darbhanga, Davanagere, Dhenkanal, Haldwani, Hazaribagh, Hisar, Jodhpur, Kalaburagi (Gulbarga), Kalyani, Karimnagar, Kolhapur, Kurukshetra, Mehsana, Moradabad, Muzaffarnagar, Muzaffarpur, Nanded, Patiala, Salem, Shimla, Sikar, Ujjain, Vellore.

The Other Test Centers Are: Agra, Ahmedabad, Aurangabad City (Maharashtra), Allahabad, Ambala, Amravati, Amritsar, Bengaluru, Berhampur, Bhatinda, Bhilai Nagar, Bhopal, Bhubaneswar, Chandigarh/Mohali, Chennai, Coimbatore, Cuttack, Dehradun, Delhi-NCR, Dhanbad, Dibrugarh, Durgapur/Asansol, Ernakulam, Gandhinagar, Goa, Gorakhpur, Guwahati, Gwalior, Hooghly, Hubballi(Hubli), Hyderabad, Indore, Jabalpur,Jalandhar, Jaipur, Jammu, Jamshedpur, Kannur, Kanpur, Kolkata, Kota, Kottayam, Kurnool, Lucknow, Madurai, Mangalore, Mumbai, Mysuru(Mysore), Nagpur, Nashik, Patna, Pune, Raipur, Rajahmundry, Ranchi, Roorkee, Rourkela, Sambalpur, Siliguri, Surat, Thiruvananthapuram, Tiruchirappalli, Tirupathi, Tiruvallur, Udaipur, Udupi Vadodara, Varanasi, Vijayawada, Visakhapatnam, Warangal, Tejpur, Jorhat, Rajkot, Shillong, Naharlagun.

The process of submitting the application started on 15 July 2024. Admit card for the exam will be available for download from 20 December 2024.

Exam will be conducted on 5 January 2025 from 2:00pm to 5:30pm. The process of application (XAT 2025 Registration) has begun.

The scores in the exam will be used by other well-known management institutions for admission into courses offered by them.

There are other prestigious B Schools that offer admission into management courses based on scores in XAT and these institutions are known as XAMI (Xavier Association of Management Institutes).

Point to remember

The official website for the exam is ready and it can be visited with the help of URL ‘https://xatonline.in/’ The candidates can read the information about the exam.

The link to take up XAT 2025 registration is active, candidates can take up XAT 2025 registration and apply for the test.

About the exam

The full name of the exam is Xavier Aptitude Test which is popularly known to all as XAT. It is conducted every year by XLRI of Jamshedpur.

It is a national level exam that has to be passed to gain admission into management courses offered by XLRI and other participating institutions.

XAT 2025 is meant to be conducted for the year 2025. The test will be conducted across 75 cities in India.

Even apart from participating institutions, many other b schools across India offer admissions based on scores in this exam.

Who can take up XAT 2025 registration?

Candidates willing to take up XAT 2025 registration must have passed Bachelor’s Degree or its equivalent from a recognized educational institution located anywhere in India.

Candidates appearing for the final year of their qualifying degree examination and those who have completed degree requirements and are awaiting results can also take up XAT 2025 registration.

Also Read – Top 7 IITs For Management Courses in 2024: NIRF 2024 rankings

However, they have to pass the exam and provide a proof for it by the time of admission process commencement in XLRI or its associate institutions.

1. The URL mentioned above must be typed into the browser and submitted to allow the website to download.

2. Once the website is ready, candidates can click the information brochure and know about the exam.

3. After reading the information, candidates can click the button Register.

4. Clicking the above button will open another webpage with URL ‘https://applications.xatonline.in/?_gl=1*17pi4n7*_ga*MTM4OTUzOTQ1NC4xNzIwODU1NjQw*_ga_44L83023B1*MTcyMDg1NTY0MC4xLjEuMTcyMDg1NTgyMC42MC4wLjA.’

5. When the webpage with above URL opens, candidates can provide the required information and create an account with username and password.

6. Post account creation, candidates can login and start applying for the exam.

Link to take up XAT 2025 Registration is Here

Registration fee

Candidates have to pay XAT 2025 registration fee of Rs 2200 while applying for the exam. Those applying for XLRI programmes, have to pay Rs 200 per programme.

How to download admit card?

Candidates who have successfully completed their XAT 2025 registration will alone be able to download admit card and its process is explained below:

1. Candidates have to visit the official website for the exam at ‘https://xatonline.in/’

2. Once the website is ready, candidates have to click the link for downloading hall ticket which may open another webpage.

3. When another webpage opens, candidates have to type their application number and other required information and submit them to obtain the admit card.

Exam pattern

XAT 2025 will be conducted online as a computer based test where the questions have to be answered on a computer screen at the test centre.

Duration to complete answering is 3 hours 30 minutes. The test will have questions related to Decision Making, Verbal & Logical Ability, Quantitative Ability & Data Interpretation, General Knowledge, and Essay Writing.

Candidates who have taken up XAT 2025 registration must remember that XLRI has decided to make changes in exam timings. XAT 2025 exam timing stands changed from morning to afternoon.

The exam has to be passed with required qualifying marks which is also known as cutoff scores.

Cutoff score is the minimum marks candidates have to get in the exam to be eligible for next phase of admission.

The score of the candidates in the exam must be either greater than cutoff or equal to it.

Those who pass can appear for the next stage which comprises group discussion, interview, document verification. Those who get the seat can pay the money and join the institution for classes.

Point to remember

It is to note that many institutions accept XAT scores for admission into management programmes offered by them, their admission process and schedule may vary from that of XLRI.

Candidates have to visit the websites of those institutions and obtain information about their admission process before submitting applications there.