Facilities

Micro Raman Spectrometer Coupled with Four Probe Surface Probe Microscopy

Raman Spectrometer

• • Micro-Raman Spectrometer (Renishaw inVia)

  • Excitations 325, 488, 514.5 and 785 nm

  • Detection Limit 200-1700 nm Raman Imaging for 100 nm resolution (Point Source : Slow Scan) and  600 nm resolution (Line Source : Fast Scan)

  • Temperature 77-600 K on Raman Stage (LN2 Cooled)

Surface Probe Microscopy (SPM)

• • Four Probe with Independent Tuning Fork Feed Back ( MV4000, Nanonics, Israel)

  • One probe with Beam Bounce Feed Back

  • Max Scanning Range 150x150x150 micrometer

  • Tip Enhance Raman Spectroscopy (TERS)

  • Near-Field Scanning Optical Microscopy with Single Photon Detector

  • Conductance Mapping, Kelvin Probe Microscopy, Magnetic Force Microscopy

  • Thermal Scanning

  • Nanoindentation

  • Nano-delivery (Gas, Liquid)

  • 1E-7 mbar (ion pump  and Turbo pump)

  • Temperature -25-300 oC on SPM Stage (Thermoelectric Cooled)

CVD Chamber for Vapour-Liquid-Solid Growth 

• • MFC controlled Gas Injection Port.

  • Pressure : 0.001-1200 mBar (Strain Gauge Sensor) Max.

  • Temperature 1473 K

Three Zone Tube Furnace

• • (80 O.D x 74 ID. x 1400 L) mm fused quartz tube;

  • Max. Temperature 1475 K;

  • Three zones: (660mm in total), each zone 220mm heating length

Thermal Evaporation Unit

• • Resistive Heating

  • Diffusion pump backed by rotary pump

  • Digital Thickness Monitor

  • Chamber Vacuum 1 x 10-6

Double Barrier LB trough

Used for monolayer and multilayer deposition of organic tailored thin films for microelectronics, sensor applications.

Exposure Facility for Gas Sensing (EFGS)

• • Resistance based Gas Sensor Studies

  • Indigenously designed

  • Sensors in various forms can be tested (nanostructures, thin films, thick films, devices etc)

  • Testing upto 600 oC in dynamic mode

  • MFC based gas switching facility controlled through PLC circuitry

  • Upto 6 gas flows can be flown simultaneously with completely electro-pneumatic opening/closing of valves

  • Automated data acquisition (resistance, RGA profiles)

Exposure Facility for Chemical Sensing 

• • Resistance/capacitive based Chemical Sensor Studies

  • Indigenous designed

  • Sensors in various forms can be tested (nanostructures, thin films, thick films, devices etc)

  • Testing upto 400 oC in static mode

Micro Probe Station for Optoelectronic Measurements