Facilities Available

Central facility usage form

Structural characterisation

Optical microscope

Carl Zeiss (INVERTED): MAT 200 MOTORISED AXIO VISION 4.7.2 VERSION

Plan Achromatic objective lenses: 2.5x/5x/10x/20x/50x/100x Phase contrast objectives are 10x and 20x Eye piece: 10x Filters: Blue/Green/Yellow CCD: TWAINE CAMERA IMAGE ACQUISITION Halogen Bulb: HAL100: 12V, 100W and Bio-imaging using Fluorescence (HBO) attachments with 63x oil immersion objective MODES OF OPERATION: BF/DF/TRANSMISSION /TIC/DIC SLIDES

Olympus (UPRIGHT): BH-2

Objective lenses: 5x, 10x, 20x, 50x, 100x, CCD camera HAL100: 12V, 100W MODES OF OPERATION: BF/DF/TRANSMISSION /POLARISATION

Omni: Metagraph-1 (INVERTED)

Plan Achromatic objective lenses: 2.5x/5x/10x/20x/50x/100x, Eye piece: 10x, 16x/20x Filters: Blue/Green/Yellow Halogen Bulb: 6V, 12W Stage opening diameter: 12mm/25mm MODES OF OPERATION: BF/DF

Polishing and Etching:

Sturers dual disc grinding and polishing carried out using SiC emery sheets between 200 and 2500 grit then moved to Metatech single and double wheel variable speed for final diamond paste 0.25-1 µm polishing. Automatic polishing machine with 4 pole is also available. Ultrasonic cleaning is carried out and etchants are prepared in a Fume hood.

Abrasive wheel cutting machine and Diamond wheel cutting machine. Hot compaction facility for sample mounting using Bakelite powder.

Booking Details

Booking is not required for the department users. After working hours and holidays users should sign the register in the department office to collect the keys (must be returned after use) and outside users must take prior permission from the Chairman and faculty in-charge Prof. Subodh Kumar.

Scanning electron microscope

ESEM Quanta 200, FEI
W-Filament, low vacuum and humidity capability, Secondary E-T and Solid state backscattered electron detector, Ultra thin window EDS System (EDAX), Resolution at 20 kV:3nm in high vacuum.
Online Booking

Electron Probe Micro Analyzer

The JXA-8530F Electron Probe Micro Analyzer is a thermal field emission electron probe micro analyzer combining high SEM resolution with high quality composition analysis of submicron areas. The JEOL JXA-8530F instrument is equipped with 6 WDS detectors (3 for heavy elements and 3 for light elements) and an energy dispersive X-ray spectrometer (EDS). This combination can simultaneously analyse 3 elements WDS + 16 elements EDS plus collect image signals from backscatter and secondary electron detectors.

  • High detection sensitivity for trace elements
  • High accuracy of quantitative analysis
  • High resolving power for adjacent X-ray spectra
  • High accuracy of light elements analysis

Specifications:

  • Detectable element range : 4Be to 92U Detectable X-ray range:
  • Detectable wavelength range with WDS: 0.087 to 9.3 nm
  • Detectable energy range with EDS : 20 kev
  • Number of Spectrometers: 6 WDS detectors, 1 EDS
  • Acc.Voltage: 1 to 30 kV (0.1 kV steps)
  • Scanning Magnification: X 40 to 300.000 (W.D.11mm)
  • Probe current: 1×10-12 to 5×10-7 A
  • Probe Current stability: +(-)0.3%/h
  • Secondary electron image resolution (SEI): 3.0 nm (WD11mm, 30 kV)
  • Backscattered electron image (BEI) : Topo and composition image

Minimum Probe Size

  • 40nm (10 kV, 1X 10-8 A)
  • 100nm (10 kV, 1X 10-7 A)

Specimen size:

  • 32 mm dia. X 25 mmH
  • 36 mm dia. X 20 mmH X 4 pcs
  • 25.5 mm dia X 20 mmH X 9 pcs

Booking details:

  • Click Here to download user request form.
  • R.Ravi(rravi@iisc.ac.in) / Subho Dasgupta(dasgupta@iisc.ac.in) / Satyam Suwas(satyamsuwas@iisc.ac.in)

Atomic Force Microscope

Specifications

  • Scan head: Maximum scan range: 70micron
  • Drive resolution Z: 0.21 nm and XY: 1.0 nm (based on 16 bits)
  • Auto approach: 5mm, Maximum approach speed: 0.1mm/s
  • Cantilevers: CONTR/NCLR (FREQUENCY: 15-300 kHz)
  • Imaging Modes: Phase contrast, Force Modulation, Spreading Resistance

Faculty member in charge: Ashok M. Raichur

Scanning Tunneling Microscope

Specifications

  • Scan head: Maximum scan range: 1.0micron
  • Maximum Z-range: 200 nm
  • Drive Resolution Z: 3 pm and XY: 15 pm
  • Tip-sample approach: Stick-slip piezo motor
  • Tip: Pt/ Ir wire: 0.25 mm
  • Sample size: Max. 10 mm diameter
  • Calibrated using: HOPG

Faculty member in charge: Ashok M.Raichur

X-ray Diffraction Laboratory

XPERTPro, PANalytical JDX-8030, JEOL

(1) X-Pert PRO, PANalytical

Fixed tube, Cu target, secondary graphite monochromator, flat plate horizontal sample holder, X-Celerator* for faster data acquisition, X-Pert Hi-Score plus software pattern analysis and phase identification (ICDD data base).
*Usage of X-Celerator reduces the data acquisition time by ˜1/4th.

(2) JDX-8030, JEOL

Fixed tube, Cu and Fe-targets, horizontal flat plate sample holder.
Sample and quantity:
Most preferably powder, Otherwise any sample with flat surface. The powder/ bulk sample should cover ~ 15 mm x ~15 mm x ~1 mm space of the standard sample holder.

For booking on this system, Please Contact Mr.A.N.Krishnamurthy ( X-Ray LAB)
Training for INDEPENDENT Usership,– Contact Dr.SatyamSuwas / Dr. Rajeev Ranjan

(3) X-radiography

Stenoscop 9000 is a mobile medical X-ray unit equipped with a C-arm, on which an image intensifier and X-ray source are mounted. The X-ray system enables operation in one of several modes: standard radiography, high-resolution fluoroscopy, pulsed fluoroscopy, and standard fluoroscopy. Up to 50 min of continuous X-ray emission in the fluoroscopy mode allowed collection of the high-quality, distortion-free images. Voltage range is from 40 to 110 kV and current range is from 0.1 to 6 mA. The unit has dual focus.

For further information contact Prof. Govind S. Gupta (govindg@iisc.ac.in)

Thermal analysis

Online booking of thermal analysis facilities

DST

Faculty member in charge: Praveen Ramamurthy

For usage contact: P. Padaikathan

Online booking system

1. The METTLER-TOLEDO Differential Scanning Calorimeter (DSC 822 e ) with S TA R e software measures the difference between the heat flows from the sample and reference sides of a sensor as a function of temperature or time. Differences in heat flow arise when a sample absorbs or releases heat due to thermal effects such as melting, crystallization, chemical reactions, polymorphic transitions.

Specifications:

  • Sample mass/volume: minimum of 0.5 -20mg/up to 150ul
  • Temp range: Between -150°C and +70°C
  • Cooling option: Liquid Nitrogen (pressurized to 20-30psi)
  • Heating rate: 2—50 K/min
  • Cooling rate: from 500°C to 100°C in 8min
  • Resolution: 0.4µW

Soon DSC will be upgraded with...

Temperature-modulated DSC techniques (TMDSC) are widely used in thermal analysis to separate overlapping temperature-dependent and time-dependent thermal effects. Methods used up until now have overlaid the isothermal temperature or heating ramp with a (usually) sinusoidal temperature modulation of just one frequency (single frequency method).

Auto-Sampler Robot (for 32 No. of tests) and a LN 2 – Dewar capacity 240litre

2. The NETZSCH STA 409 runs under PROTEUS Software for simultaneous TG-DSC or simultaneous TG-DTA measurements. The TG sample carriers exchanged with TG-DSC or TG-DTA modes operation with top-loaded samples ensure total protection of the balance, which is on the bottom and through accurate flow of the purge and protective gases

Specifications:

  • Temperature range: 25°C to 1600°C (SiC: HEATING ELEMENT)
  • Heating and cooling rates: 5 K/min to 50 K/min
  • Weighing range: 200 mg

TG resolution: up to 0.002mg

DSC resolution < 1 µW

Atmospheres: inert, oxidizing, reducing, static, dynamic

TG features:

  • Mass changes in wt% or mg
  • Automatic evaluation of mass-change steps
  • Calculation of mass/temperature values
  • Calculation of residual mass
  • Extrapolated onset and end temperatures
  • Peak temperatures of the 1st and 2nd derivative of the mass-change curve
  • Automatic baseline

DSC/DTA features:

  • Determination of onset, peak, inflection and end temperatures
  • Automatic peak search
  • Analysis of peak areas (enthalpies) with selectable baseline
  • Enthalpy determination allowing for mass changes
  • Comprehensive analysis of glass transitions

DT/TGA

Content coming soon.

Mechanical testing

Dynamic Mechanical Analyser

Model EPLEXOR 500 N
Load Capacity Force Range (Statical) 500 N Provision to use 1500 N transducer
Dynamic Strain* ± 1µm to ±1.5mm
Statical Strain Upto 35 mm
Frequency Range 0.01 to 100 Hz
tan ä 0.0001 – 100
Temperature Range -150°C to 500°C (Furnace 1)
Ambient to 1000°C (Furnace 2)
Available Clamping Devices Compression, Tensile and 3 point bending – symmetric and asymmetric
Sample Dimensions For compressive loads – Material Dependent
For tensile and 3 point bending – Thickness: 2mm, Width: 5mm and Length: 45 mm
Materials that can be tested Metals
Composites
Bulk metallic glasses
Rubbers
Elastomers
Student trained to use the Instrument independently Mr. Easwar Prasad (Prof. UR Lab.)
Faculty in charge A.H.Chokshi
Contact person

*Maximum strain depends on the sample, clamping device and frequency</td>

Depth Sensing Indentation

Hysitron Nano Indentor (located in Department of Mechanical Engineering)
Model
:
TI 900-Tribo Indentor
Load Capacity
:
Low load: 5 microN-10 mN
High load: 10 mN-1 N
Load resolution
:
1nN
Displacement resolution
:
0.04nm
Maximum Displacement capacity:
:
2-3 microns
Modes of operation :
  • Quasistatic Nano Indentation
  • Nano Scratch
  • SPM In-situ Imaging
  • Nano DMA
  • High Temperature stage( upto 400 deg celsius)
Regular Operator : Rashmi
Other Independent Operators : Praveena (Jayaram/Biswas), Anirban Mahato,(Biswas), Nisha Verma (Jayaram), Jaya Nagamani (Jayaram)
Contact Person : Vikram Jayaram (3243) / Shamsundar (2351)
CSM instrumented microindentation system
Room temperature
:
Diamond indenter (Vickers, spherical, Knoop)
High temperature(450 C) : Zircon (Vickers, Spherical)
Maximum load : 30 N
Load resolution : 100 micro N
Depth resolution : 0.3 nm
Independent users : Eswar Prasad, Pradipta Ghosh, Jaya Nagamani, P. Padaikathan
In-Charge : U. Ramamurty(ramu@iisc.ac.in)

Thin Film Residual Stress

Model
:
KLA Tencor FLX 2320
Specifications
:

Measures curvature of plates and beams using laser. Heating stage upto 500°C in ambient atmospheres or under inert gas shrouding . Liquid nitrogen can circulated to reach temperatures down to 0°C. Dual beam enables stresses measurements for transparent coatings as well.

Procedure
:
Measure the curvature of substrate before and after the deposition and, knowing the substrate and film thickness and substrate elastic modulus, use Stoney’s equation to find the stress.
Statical Strain
:
Maximum size is 8 inches wafer. Plates, disks, beams with longest measurable length less than 8 inches dia. can also be used.
Faculty in charge
:
Vikram Jayaram
Contact person
:
Students trained to use the instrument: Sumanth G, Nisha Verma

Mechanical Testing Lab

No. Equipment Nature of tests Specs Contact
Universal Testing Machines
1 Dartec Servo-hydraulic UTM Compression,Tension Max Load(KN):100Strain rate(/sec):10-4 to 10Temperature (oC) <1000 Mr. S. Sasidhara
2 Instron 8032 Servo-hydraulicUTM Tension, Compression, Bending, Fracture, Low Cycle Fatigue Max Load(KN): 100Strain rate(/sec):10-3 to 10-1 Mr. S. Sasidhara
3 Instron 8502 Servo-hydraulicUTM Stress CorrosionStudies Max Load(KN): 100Strain rate(/sec):10-3 to 10-1 Mr. S. Sasidhara
4 Zwick/RoellScrew driven UTM Tension,Compression, Bending Max Load(KN): 100Crosshead speed(mm/min):0.0005 to 200Temperature (oC) <300oC Mr. S. Sasidhara
5 Instron 5567 Screw driven UTM Tension,Compression Max Load(KN):30Cross head speed(mu/sec):0.1 to 500Temperature (oC) <600oC Prof. A.H. Chokshi
Impact and high strain rate testing machines
6 Split-HopkinsonPressure Bar (SHPB) apparatus High strain rate Compression Max Load (KN):20Strain rate(/sec):1000 to 4000Temperature (oC)<600 Prof. S.Karthikeyan
7 Instron Dynatup8250 Impact tester Instrumented Drop Weight Test Velocity (m/sec): 0.61 to 4.8Energy(Joules): 0.67 to 302Weight(kg): 2.5, 4.5,11.3,22.7, 34, 45.3Data Acquisition: Instron 930-I
8 Tinius-Olsen Model T 84 Pendulum Impact tester InstrumentedCharpy and IzodImpact Test Velocity(m/sec): 0.1 to 5.1Energy(Joules): 0.2 to 359Data Acquisition: Instron 930-I
Macro and Micro hardness testing machines
9 Indentec Macro hardness tester Vickers, Brinell, Rockwell hardness Load Range(kgf)Vickers: 3, 5, 10, 100Brinell: 5, 10, 62.5, 187.5Rockwell: 60, 100, 150Holding time(sec): 1 to 60
10 Zwick/Roell ZHVmicrohardnesstester Vickersmicrohardness Load Range(kgf): 3, 5, 10, 100Holding time(sec): 5 to 60Objective lenses: 10x, 40x

For availability of different equipment for usage, please contact the respective contacts, while ccing Prof. S. Karthikeyan. Kindly provide details on the type of test, material to be tested, number of samples and your affiliation.

Members of the facility:

Faculty: A.H. Chokshi (Facility Incharge), Prof S. Karthikeyan, Prof. Subodh Kumar, Prof Satyam Suwas and Prof. U. Ramamurty

Staff: Mr. S. Sasidhara and Mr. V. Rajakumaran

The department also has facilities for Instrumented Indentation, Dynamic Mechanical Analysis (DMA) and Thin Film Stress measurement.

Materials Processing

Solid state processing
Content coming soon.

Liquid state processing
Content coming soon.

Particle characterization

Particle Size Analyzer
Machine Model
:
Mastersizer
Make
:
Malvern Instruments
Size range
:
0.05 to 900 µm
Faculty In-Charge
:
S.Subramanian
Contact Person
:
R.J.Deshpande, x 3237 (rjd@iisc.ac.in)
Zetasizer
Machine Model
:
Zetasizer Nanoseries-ZEN 3690
Make
:
Malvern Instruments
Particle Size range
:
1nm to 3µm
Size range for zeta potential
:
5nm to 10 µm
Faculty In-Charge
:
S.Subramanian
Contact Person
:
R. J. Deshpande, x 3237 (rjd@iisc.ac.in)
Automatic Micropore Physisorption Analyzer
(Determining surface area and pore size distribution from 3.5 to 5000 Angstroms)
Make and model
:
Micromeritics ASAP 2020
Analysis Gases
:
N 2 , Ar, CO 2 , O 2 , Kr, CO, Butane or any non-corrosive gas
Analytical Techniques
:

Single-point BET surface area, Multi-point BET surface area, Adsorption isotherm, Desorption isotherms, Langmuir surface area, BJH Mesopore volume, BJH Mesopore area, Total pore volume, deBoer t-Plot & others, MP-Method, Micropore Volume, Micropore Surface Area, Micropore Size Distribution, a s Plot, f-Ratio plot, Heat of adsorption, Freundlich & Temkin, Density Functional Theory, Reference isotherms, Horvath-Kawazoe, Dubinin-Radushkevich, Dubinin-Astakhov and Graph Overlays

Operating Specifications
:
Surface Area Range 0.0005 m 2 /g and upPore Diameter Range : 3.5 – 5000 AngstromsMicropore Volume: Detectable within 0.0001 cc/g
Pressure Measurement Resolution:
:
0 to 1 mmHg Transducer 0.000001 mmHg0 to 10 mmHg Transducer: 0.00001 mmHg0 to 1000 mmHg Transducer: 0.001 mmHg
Typical Relative Pressures:
:
N 2 / Liquid N 2 : 10 -7 Ar / Liquid Ar: 10 -7 CO 2 at 25 o C: 10 -9
Faculty In-Charge
:
S.Subramanian(ssmani@iisc.ac.in)

Chemical Analysis

ICP Spectrometer
Model
:
JY 24
Make
:
Jobin-Yvon, France, Sequential ICP Analyzer
Elements analyzed
:
can analyze ~ 72 elements in the periodic table including those such as boron, silicon etc.,
Monochromator
:
HR 640 monochromator incorporating a holographic grating with 2400 grooves/mm with a linear dispersion of 0.6nm/mm
Instrument Resolution
:
0.010 nm
Sample intake
:
About 1 ml/min Min
Detection Limits
:
Varies according to the element. Can be as low as 0.07 ppb for Mg to 20ppb for some of the rare earth elements
Contact Person
:
B.V.Narayana (bvn@materials…)
Atomic Absorption Spectrometer
Model
:
Series AA Spectrometer
Make
:
Thermo Electron Corporation
Elements analyzed
:
Common elements including base metals and alkaline earth metals
Range
:
upto 5 ppm
Sensitivity
:
~ 0.05 ppm
Faculty Incharge
:
S.Subramanian
Contact Person
:
R.J.Deshpande (rjd@iisc.ac.in)
High performance liquid chromatography (HPLC) from Waters (Identification, estimation and purification of macromolecules/oligomers/polymers)
Pump
:
Model 515
Column
:
Sunfire (TM) Reversed-phase HPLC column C18, 5 µ m (4.6 x 250 mm column), Operating range – pH: 2-8, columns stable upto 6000 psi. Best for purification and impurity profile assays, (Solvents-Acetonitrile)
Detectors
:
Waters 2414 (RI Detector), Waters 2489 (UV/Vis Detector)
Faculty Incharge
:
S.Subramanian (ssmani@iisc.ac.in)
Size exclusion chromatography (GPC/SEC) from Waters (For macromolecules/polymers molecular weight distribution analysis)
Pump
:
Model 515
Column
:
Styragel HT 6E THF (7.8 x 300 mm), measuring MW range from 5000-10 7 . Equipped with Waters temperature control module II, working range from ambient to high temperature (140 °C) analysis (Solvents-TCB, THF).
Detectors
:
Waters 2414 (RI Detector).
Faculty Incharge
:
Praveen C R (praveen@iisc.ac.in)

Electrical behaviour

Content coming soon.

Heat treatment

Hot air ovens

  • 200 deg. C – 3 racks
  • 250 deg. C – 3 racks

Tube furnaces

  • Two small tube furnaces- 80 mm dia – 1050 deg. C
  • One tube furnace – 50 mm dia-1300 deg C
  • One tube furnace – 100 mm dia 1700 deg. C

Box furnaces

  • One box furnace – chamber size 6″x1.5′- 1100 deg. C
  • One box furnace- chamber size 6″x1″- 1350 deg C
  • One box furnace – chamber size 6″x6″ – 1700 deg. C

Note:
For temperature precision to better than 5 deg. C, you need to take additional steps for calibration. If you want to heat below 300 deg.C, you can find first the difference between the actual and set temperatures by using a thermometer, which can go up to 250 deg. C. These thermometers are available in stores or local companies. Relatively high temperature furnaces should be calibrated with the help of melting point of gold (ask any PhD students in Prof. Aloke Paul’s lab for help). Note that this procedure is relatively more reliable than other methods.

For reliable results, perform your own calibration, especially after changing the tube or thermocouple. For one set of experiments use the same furnace to minimise errors. It is very difficult to calibrate 1700 deg. C furnace running in air. However, we have seen that above 1500 deg. C, furnaces are reliable even without any additional calibration.

Computation

The department has several computing clusters available, with contributions from the groups of Prof. T. A. Abinandanan, Prof. S. Karthikeyan, Prof. Abhik Choudhury, and Prof. Sai Gautam Gopalakrishnan. All computing clusters are located in a centralised facility in the E-wing of the department.