IISER MOHALI

Welcome to the Transmission Electron Microscopy (TEM) facility at IISER Mohali. This facility is located at the ground floor (room #1L2) of the Academic Block 2. The microscope at the facility (JEOL JEM-F200) is a field-emission TEM for multi-purpose operation. The machine features various recording modes including low-magnification TEM, high-resolution TEM, STEM-HAADF, selected area electron diffraction (SAED) and elemental analysis using EDS detector. It is fitted with an ultra-fast, high-precision “Pico stage drive” as well as a super-high-precision piezo drive mechanism which enables smooth movement of field-of-view over a wide spatial-scale range up to picometers.

Specifications:

Electron Gun: ZrO/W thermal electron field-emission gun

Accelerating voltage: 200 kV

Brightness: 4x10⁸ A/cm²sr

Resolution: (TF-HR pole piece)

Point to point: 0.19 nm

TEM lattice image: 0.10 nm

STEM-HAADF image: 0.14 nm

Magnification:

TEM: ×20 to ×2.0 M

STEM: ×200 to ×150 M

SAED camera length range: 15 mm to 2000 mm

Maximum possible specimen tilt-angle: ±80°

Sample holders: Single-tilt and double-tilt holder

Camera: 4k x 4k Gatan One-view camera

Energy dispersive X-ray spectrometer: Bruker windowless EDS detector

Note: Samples submitted to this facility for recording TEM-related data are the property of the investigator. All data collected by the facility directly relevant to the samples are released to the principal investigator upon completion. The facility should be acknowledged in all publications.

Sample Submission (internal and external samples): Each sample should be accompanied by a submission form providing the required information. The submission form can be downloaded from the link given below. For details, users may write email to This email address is being protected from spambots. You need JavaScript enabled to view it. or This email address is being protected from spambots. You need JavaScript enabled to view it..

Sample submission form (pdf format) (docx format)

Usage Charges (18% GST to be included in addition to the following charges):

Mode of Payment: The fee should be transferred to the following account: Account name: IISER Mohali Receipt A/C Account number: 4790101001912 IFSC: CNRB0004790 The transfer proof should be sent by email to IISER Mohali. Once the receipt of the fee is confirmed, the measurement will be carried out.

Sample preparation: We would prefer that the users provide us the samples loaded on a TEM grid. However, if help of the TEM facility is required for sample preparation, the charges will be extra. For academia samples, a TEM grid will cost 500 rupees. For using stains, the charge will be 1000 rupees. The charges will be double for Industry and other profit oriented labs. The user must provide the method for sample preparation. When we will try our best to follow the instructions, the facility will not be responsible for the outcome. Users are requested to discuss over email regarding sample preparation and collection of results.

For more information on the facility and usage, please contact the faculty members

Dr. Ujjal K. Gautam (Convener of the TEM facility)

Department of Chemical Sciences, IISER Mohali, Sector 81, SAS Nagar Punjab 140306

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Dr. Yogesh Singh

Department of Physical Sciences, IISER Mohali, Sector 81, SAS Nagar, Punjab 140306

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Dr. Samrat Mukhopadhyay

Department of Chemical/Biological Sciences, IISER Mohali, Sector 81, SAS Nagar, Punjab 140306

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Dr. Raj Kumar Roy

Department of Chemical Sciences, IISER Mohali, Sector 81, SAS Nagar, Punjab 140306 

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