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Category
- Microscopy and Imaging » Force Microscopy
Booking Details
Facility Management Team and Location
Facility Features, Working Principle and Specifications
Facility Description
Electrochemical STM (EC-STM)- Can perform Scanning Tunneling Microscopy (STM). It also includes potentiostat/galvanostat hardware to perform EC-STM experiments. Lateral/frictional force microscopy, conductive AFM, magnetic and electric force microscopy, and Kelvin Probe Microscopy can be done. Experiments can be conducted in contact/non-contact/tapping mode in air or any other fluid.
The system is equipped to achieve high resolution in imaging in air or any other fluid either by tuning the cantilever resonance frequency by photo thermal (not piezo) or by imaging at off resonance frequency by driving the z scanner sinusoidally without the need to tune the cantilever.
Modes: Contact/Non-contact/Tapping
Media: Air or any other fluid
Instructions for Registration, Sample Preparation, User Instructions and Precautionary Measures
Samples for AFM imaging should be immobilized on a rigid substrate. Macroscopic samples (such as certain biomaterials, crystals, polymer membranes, etc.) can be attached directly to a stainless steel sample disk with an adhesive. Dissolved or suspended samples like cells, proteins, and DNA are usually bound to a flat substrate like mica or glass. Most scanning probe systems are able use the following substrates:
- Microscope slides
- Cover slips
- Mica discs and sheets
- Petri dishes
- The MultiMode and Innova (both scanning sample SPMs) cannot hold microscope slides or petri dishes.
- When imaging fluid samples, use extraordinary precautions against spillage. Fluids must not be spilled on or around components containing electronic parts.
- Avoid spilling all corrosive fluids on exposed surfaces; otherwise, damage may result. In the case of a spill, immediately clean and dry all affected surfaces carefully.
- Do not stare at the laser beam either directly or from a highly reflective surface
- Do not use acetone or other unauthorized cleaners/solvents to clean the MultiMode 8.
- Do not change samples in the middle of operation. Verify that the stage is clear of tools, objects, and debris at all times. Use alcohol wipes periodically to keep the stage clean of dust. Dispose of wipes in an appropriately labelled solvent-contaminated waste container
Charges for Analytical Services in Different Categories
• Charges mentioned are per sample
| Medium | Description | IITB Internal Users | External (Academic/ National R&D Labs) | External (Industry) |
| Air | STM | ₹ 1000 | ₹ 5000 + 18% GST | ₹ 8000 + 18% GST |
| Fluid | STM | ₹ 3000 | ₹ 7500 + 18% GST | ₹ 12000 + 18% GST |
Electrochemical STM | ₹ 4500 | ₹ 10000 + 18% GST | ₹ 20000 + 18% GST |
Applications
- Scanning Tunneling Microscopy (STM)
- Electrochemical STM (EC-STM)
- Lateral/frictional force microscopy
- Conductive AFM
- Magnetic and Electric Force Microscopy
- Kelvin Probe Microscopy
- Scanning Capacitance Microscopy
- Tunneling Atomic Force Microscopy
- Scanning Spreading Resistance Microscopy
- Conductive Atomic Force Microscopy