Surface and Interface Science Laboratory
Quick view of Laboratory
About
We are setting up the state-of-the-art Ultrahigh Vacuum based Surface and Interface Science research group in IIT Bombay.
Our Interest
Group research interests are focused on (but not limited to) electronic structure studies of:
- Quantum materials such as Quantum Spin Hall materials
- Heterostructure of layered materials
- Metallic and Oxide Quasicrystals
- Organic and Inorganic adsorbates
- Design and Fabrications of State of the Art Instruments
For more details feel free to contact over email or in-person.
Ongoing Projects
There are multiple choices of projects available immediately for short and long term. Proposed topics are:
- In-situ growth & characterisation of graphene analog 2D materials
- Growth & investigation of Oxide Quasicrystals -Structure studies using Low Energy Electron Diffraction
- Inorganic and Organic adsorbates adsorption studies on Oxide Quasicrystals
- Designing the Heterostructure by mechanical stacking and its surface structure studies
- Developing electronics circuits suitable for piezoelectric transducer for nanometer scale spatial imaging
- Designing and development of tools for photon counter using digital signal processing method
- Design and implementation of spin-polarised and non-polarised electron source for surface science investigation
Feel free to contact for more details such as currently available instrument/facility for mentioned projects and/or discuss about your interest.
Opportunities
If you have interest in developing electronic circuits, and looking for open opportunity in hands-on scientific instrument design, either full or part time, you may contact.
Looking for:
- Post-Doctoral fellow
- Ph.D.
- M.Sc. Project
- B.Tech. Project
- Any type of short term project (about 1 to 6 month)
Opportunity to Develop a Cloud-Based, Multilevel Data Handling and Inventory System using Google Sheets
Short Term Project: Design and Development of a Centralized Research Inventory & Data Management System
We are seeking a candidate to design and build a fully automated cloud-based inventory and research data management system powered by Google Sheets and Google Apps Script Automation. The goal is to create a system that supports multilevel data management, including institution-wise, project-wise, and investigator-wise data segregation, with real-time dashboards and auto-updating sheets.
Project Goals and System Overview
The candidate will be responsible for developing a Dynamic Data Dashboard and Google Sheets Database System that enables seamless automated data entry, routing, and visualization for research and inventory management. The system should ensure data is automatically categorized under respective institutes, principal investigators, and projects, supporting efficient and organized data handling.
Key Features and Development Objectives
- Multilevel Data Handling: Develop mechanisms for institution-wise, project-wise, and investigator-wise data segregation.
- Google Sheets & Apps Script Automation: Implement low-code automation for data entry, routing, and sheet management.
- Dynamic Data Dashboard: Build real-time visualization tools for monitoring data entries and inventory items.
- Automated Data Entry & Routing: Set up Google Form integration and/or direct input sheets for efficient data collection.
- Cloud-Based Inventory System: Develop centralized, auto-updating records accessible via mobile-friendly interfaces.
Expected Skills and Learning Outcomes
- Gain hands-on experience with Google Apps Script for automating Google Sheets and Forms.
- Understand principles of multilevel data management and real-time dashboard creation.
- Learn how to design automated data systems for research and inventory management.
- Become familiar with cloud-based inventory systems and data visualization in Google Sheets.
- Introduction to Low-Code Research Data Management techniques and tools.
Keywords: Google Sheets Database System, Dynamic Data Dashboard, Automated Data Entry and Routing, Multilevel Data Management, Google Apps Script Automation, Institution-wise Data Segregation, Project-wise Data Handling, Cloud-Based Inventory System, Real-Time Data Visualization, Low-Code Research Data Management.
Feel free to contact me for more details or visit us in the Laboratory.
Please note that we are currently unable to provide accommodation or financial support for your stay or visit. However, if this is not a limitation for you, mention it explicitly when contacting us.
Techniques
We are currently working with our
- Home-build STM Setup
- Ultrahigh vacuum based Photoemission facility
Members
Our members are thoughtfully chosen, if you like to join the team write to us.:
Prof. Dr. Maniraj Mahalingam
Assistant Professor
Group leader and active team player.
PhD(12/2007-04/2014) UGC-DAE CSR, Indore, India
PDF(05/2014-07/2019) AG Aeschlimann, University of Kaiserslautern, Germany
PDF(08/2019-05/2021) AG Widdra, Martin Luther University, Halle, Germany
Asst. Prof.(08/2021-todate) SIS Lab, IIT Bombay, India
Dr. Pratheek
Post-Doctoral Fellow
PhD from Rani Channamma University, India.
PDF: SIS Lab: 11/2024 - todate
Mr. Shanmi Deibor Syntem
Ph.D. Fellow
M.Sc. from IIT Madras.
PhD: SIS Lab: 09/2022 - todate.
Mr. Adarsh Vilas Jadhao
B.Tech. Project Fellow - Term 2
B.Tech. student of IIT Bombay.
BTech Project: SIS Lab: 05/2023 - todate.
Mr. Saikat Ghoah
MSc Project Fellow - Term 2
M.Sc. student of IIT Bombay.
MSc Project: SIS Lab: 05/2024 - todate.
Our Alumni members are...:
Dr. Priyamedha K. R. Sharma
Post-Doctoral Fellow
PhD from IIT Mandi
PDF: SIS Lab: 12/2022 - 12/2024.
Mr. Ramesh Yadav
MSc project Fellow
M.Sc. student of IIT Bombay.
MSc Project: SIS Lab: 2024.
Teaching
| Sr. No. | Course | Degree | Period |
|---|---|---|---|
| 1 | EE224 Digital System | B. Tech. in Engineering Physics | 2021 Semester 2 (Jan 2022 to May 2022) |
| 2 | PH 233 Electronics Lab II (Op amp circuits) | B. Tech. in Engineering Physics | 2022 Semester 1 (Aug 2022 to Dec 2022) |
| 3 | Ph 443 Electronics Lab | M.Sc. Physics | 2023 Semester 1 (Aug 2023 to Dec 2023) |
| 4 | PH222 Digital Electronics and Microprocessor: Theory and Lab together (new course, 1st instance) | B.Tech., Engineering Physics | 2023 Semester 2 (Jan 2024 to May 2024) |
| 5 | Ph 443 Electronics Lab | M.Sc. Physics | 2024 Semester 1 (Aug 2023 to Dec 2023) |
| 6 | PH232 General Physics | B.Tech., Engineering Physics | 2024 Semester 2 (Jan 2025 to May 2025) |
| 7 | PH441 General Physics | M.Sc. | 2024 Semester 2 (Jan 2025 to May 2025) |
STM Setup
Scanning Tunneling Microscopy (STM) is used to investigate surface morphology and atomic structure with angstrom-range accuracy and picometer-range precision in optimal cases.
Title 1
Description for Image 1
Tip Making
Chemically etched tip (metal wire) in close proximity to the graphite sample, chilling in a casual ambient condition
Electronics Design
Our Electronics are home brewed, step by step improved from the breadborad to PCB using KiCAD 3D model design.
Below are a set of 3D views showcasing an electronics board in action, navigating atom locations. We utilized the MCP4922 12-bit digital-to-analog converter and the MCP3208 8-channel analog-to-digital converter, along with a bunch of instrumentation ICs, to set up our lateral scanner electronics.
Breadboard DAC designed for our scanner, all under the control of a Raspberry Pi.
Upgraded PCB for the DAC, and universal board designed for a pre-amp (10^8 V/A) and PID circuit, powered by 2x 12 V batteries.
ADC with custom attenuation and bipolar to unipolar conversion unit
PID and pre-amp (of course not ideal, but does basic work)
Data Collection
More than 15 Python modules are in sync and counting up, for counting atoms!
Hardware Parts
We are currently employing a stepper motor with a worm gear setup for coarse and fine approach adjustments.
Our scanning mechanism currently utilizes a piezoelectric
budget-friendly piezoelectric plate that works fair enough to see atoms, as tested by many DIY hobbyist
Photoemission facility
Equipment details
The instrument consists of both monochromatized and non-monochromatized X-ray light, and ultraviolet light sources. It also includes a hemispherical electron energy analyzer for photoemission spectroscopy studies.
For surface preparation, we have Ar gas sputtering, annealing (heating), and scraping facilities.
Characterization methods
- X-ray photoemission spectroscopy
- Ultraviolet photoemission spectroscopy
- Inverse photoemission spectroscopy (design and actions are under plan/progress)
Evaporation Facility
We are currently in the process of developing our own thermal evaporator suitable for:
- Inorganic elemental metals
- Organic molecules
If you are interested in joining us in building them, feel free to contact us.
Events
SPR-KRR workshop soon!
Prof. Jan Minar from the University of West Bohemia, Czech Republic, and our group from IIT Bombay will jointly conduct a hands-on workshop on SPR-KKR code usage in IIT Bombay. The exact date will be updated soon in the website, tentatively it is in the month of Nov-Dec 2024. Please save the website page for further updates.
If you are interested in participating as a participant, feel free to contact me.
Contact
Address: Department of Physics, Indian Institute of Technology Bombay, Powai, Mumbai- 400076, Maharashtra, India.
Email: maniraj@iitb.ac.in
Phone: [ext] 6515
Assistant Professor
IIT Bombay