CRF Intranet

FESEM TESCAN (Block-5 CRF IIT Delhi) 

TESCAN MAGNA is a powerful analytical tool for ultimate surface characterization of nanomaterials. TESCAN MAGNA features the Triglav™ SEM column for excellent ultra-high-resolution (UHR) imaging performance, especially for low electron beam energies. It also includes a unique in-beam detection system with energy filtered and angular differentiated electron acquisition to allow selective backscattered electron imaging contrast methods.

In addition, TESCAN MAGNA operates with a Schottky field electron source, capable of generating high electron beam currents up to 400 nA, to provide optimum conditions for microanalysis applications that require long acquisition times.            

TESCAN Essence™ graphical user interface, which features a user-friendly, customizable layout and dedicated software modules, is designed to deliver an intuitive operator experience for this state of the art UHR SEM solution. These features work together to make TESCAN MAGNA a turn-key solution for characterization of next-generation materials such as catalyst structures, nanotubes, nanoparticles and prefabricated nanoscale structures.

Make: TESCAN  Model: Magna LMU
STEM

Scanning transmission electron microscopy (STEM) provides an appealing alternative to conventional scanning electron microscopy for the characterization of materials with dimensions in the lower range of the nanoscale, like Nano-powders, Nanowires or Nanotubes.  

TESCAN MAGNA’s STEM detector has segments for the acquisition of electrons with low to high scattering angles, referred to as bright field, dark field. STEM images are typically converted (black to white and vice-versa) to resemble conventional scanning electron microscopy image appearance.

Key Features
Sample Preparation and Requirement for FESEM-EDX
  1. Sample (Powder, solid, ceramic, biological, metal, etc.) should be 100% moisture free.
  2. Sample dimension should not exceed (LxBxH) of (6mm x 6mm x 6mm) with rotation & tilting and (lxBxH) of (6mm x 6mmx10mm) without rotation & tilting.
  3. Non-conductive samples require conductive coating of approx. 2mm-5mm. For electron microscopy conductive coating can be of noble metal (Au, Pt, Ag) because it is stable and has a high electron yield. Here we have only Au coater with this lab. Kindly tell to concerned operator before sample mounting if coating of Pt is ​require.
  4. Sample must be stably fixed to the specimen mount using carbon tape as an adhesive. 
Sample Preparation and Requirement for STEM-EDX
For Booking Facility
  1. Register with CRF 
  2. Login into CRF account 
  3. Find Book queue option at left side of page 
  4. Select Book queue  -> Facility Name SEM -> Lab Instrument Name -> FESEM TESCAN

Click here to view 
testing charges List
HOW TO CONTACT

Lab Physical Location & Sample mailing address:
SEM Lab, Gate No.1
Central Research Facility, Block –V,LT-1
Indian Institute of Technology, Delhi 
Hauz Khas, New Delhi-110016,
Office Tel: +91-11-26596645

Lab Coordinator

Prof RAJIV. K. SRIVASTAVA
Department of Textile and Fibre Engineering,
IIT Delhi 
Email ID: ​rajiv@iitd.ac.in

 Operational Incharge 

Mr. Dinesh Kumar  
Project Scientist 
Phone: +91-11-2659- 6645
Email : ​ird13403@textile.iitd.ac.in

Get CRF Registration for 
External users 

1. Registration process (One Time): New Registration for external users.User Verification: Upload photo of Front side and back side of valid Identity card issued by the organization (only .jpeg format, file Size less than 1 Mb, height less than 1000 pixels, width less than 800 pixels). Undertaking: Download the undertaking template ( Download Link ). Duly filled, signed and stamped form should be uploaded in .pdf format. Confirmation: An email will be sent to the user after verification of the documents.

2.Before planning to avail the Instrument facility of CRF IIT Delhi: user must visit https://crf.iitd.ac.in -> Facility -> select the desired facility from left side navigation list.  Read carefully all the relevant information such as required sample type, testing charges and instrument location. Be prepared with details of the samples.

3.Log in and Click on Booking Appointment Tab: All the information relevant to testing must be filled in instrument booking form. In case user does not provide the required information the booking is liable to be rejected. User can upload the relevant existing data of their samples that might help in the measurements.

4.Sample submission & Payment Process: Once the application is submitted, the in-charge will verify the details and approve the request.External users must wait for the approval before making the payment and submitting the samples to concerned lab. After approval the payment should be made by the user. The payment transaction details need to be submitted online before appointment date time.

5.CRF Users can pay amount online using following details:
Beneficiary/Customer's Name: IRD ACCOUNT IITD
Bank Account Number:  10773572600  
Bank Name: State Bank of India Branch Name: IIT Branch
Branch Code: 01077
NEFT IFSC CODE / RTGS: SBIN0001077
please write "CRF _Instrument Name" in the Remarks section while paying. Save the receipt file and upload in the crfbooking system online against your application.Payment can also made in form of demand draft in favour of " IRD ACCOUNT IITD " Payable at New Delhi.6.IIT Delhi 
GST Number : 07AAATI0393L1ZI
PAN Number : AAATI0393L

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