Ferroelectric/Converse Piezoelectric Tester
(Precision Premier II)
Capabilities
- Ferroelectric Hysteresis (PE-Loop) studies, one could obtain parameters that include Ps, Pr, Ec
- Piezoelectric displacement (Strain vs Electric field/ Butterfly curve), converse piezo coefficient can be evaluated
Ferroelectric Tester
- Voltage Range (built-in drive voltage): ±10V, ±30V, ±100V, ±200V or ±500V built-in
- Voltage Range with an external amplifier and high voltage interface (HVI): 10 kV
- Minimum Charge Resolution: 0.80fC
- Number of ADC Bits: 18
- Minimum Charge Resolution: 0.80fC
- Minimum Area Resolution (assuming 1 ADC bit = 1μC/cm2): 0.080μ2
- Maximum Charge Resolution: 5.26mC
- Maximum Area Resolution (assuming saturation polarization = 100μC/cm2): 52.6cm2
- Maximum Charge Resolution with High Voltage Interface (HVI): 526mC
- Maximum Area Resolution (assuming saturation polarization = 100μC/cm2) w/o HVI: >100cm2
- Maximum Hysteresis Frequency: 250kHz @ 10V | 50kHz @ 30V | 50kHz @ 100V | 50kHz @ 200V | 2kHz @ 500V
- Minimum Hysteresis Frequency: 0.03Hz
- Minimum Pulse Width: 0.5μs
- Minimum Pulse Rise Time (5V): 400ns
- Maximum Pulse Width: 1s
- Maximum Delay between Pulses: 40ks
- Internal Clock: 25ns
- Minimum Leakage Current (assuming max current integration period = 1s): 1pA
- Maximum Small Signal Cap Frequency: 1MHz
- Minimum Small Signal Cap Frequency: 1Hz
- Output Rise Time Control: 105 scaling
Input Capacitance: -6fF - Electrometer Input All Test Frequencies for all test at any speed: Yes
Converse Piezoelectric Tester
Converse Piezoelectric / Strain Tester
The MTI-2100 features advanced fiber-optic non-contact sensor using reflectance electronic technologies for precise measurements of displacement, active vibration control, position, and distance for dynamic measurement in cryogenic, vacuum / high pressure, or in high magnetic field and harsh environment. It sets new performance standards with resolution up to 0.01 µin. (2.5 Å) and frequency response from direct-coupled (dc) up to 500 kHz.
- Digital display in engineering units
- Dual-channel capability permits simultaneous measurements of amplitude and phase
- Reflective compensated units available to automatically adjust to target reflectivity changes
- Digital display readout in engineering units eliminates the need to convert volts to displacement
- Out-of-range indicator notifies the user if the target moves out of the linear range
Features
- Interchangeable probe modules allow the user to select from seven standard fiber-optic probe designs, providing 14 different standard measurement ranges and resolutions
- High-resolution module resolves to 0.1 µin. standard or 0.01 µin. (2 Å) optional. With external filtering, 0.004-µin. (0.1nm) resolution is possible
- Standard 0-to-10 V dc analog real-time output is compatible with most signal conditioning equipment
- RS-232 output for computer interfacing
Piezoelectric test-bench
Features
- Range: 1-2000 pC/N
- Test frequency: 110 Hz
- Force amplitude: 250 mN
Capabilities
One could determine the piezoelectric coefficients in two different modes (i.e. d33 and d31) for functional ceramics, composites, etc.
Pyroelectric set-up
(Chynoweth technique)
Features
- He-Ne Laser Source
- Signal conditioner: SRS 830 – Lock-in amplifier
- Lock-in frequency range: 1 mHz to 102.4 kHz
- Amplitude Sensitivity: 2 nV
- Modulator: Variable frequency optical chopper
Capabilities
It is employed to determine pyroelectric coefficient of functional ceramics/polymers/single crystals. These data can be used to design and fabricate pyroelectric detectors and sensors.
Electro-optic test-bench
Features
- Laser source: Argon-ion Laser
- Wavelengths: 457.9 nm, 488 nm, 514.5 nm
- Optical Power output: 40 mW
- Detectors: Photodiode/Photomultiplier
- DC power source: 20 kV / 30 mA
- Optical bench with high quality polarizers along with sample mounts
Capabilities
This set-up can be effectively employed to measure electro-optic coefficients of different materials under DC conditions at three specific wavelengths. It has provision to make measurements under AC conditions as well. This forms an effective amplitude/intensity modulator to be exploited for optical communication purpose.
Non-linear optical coefficients measuring set-up
(Second harmonic generation studies)
Features
- Laser source: Pulsed Nd:YAG laser
- Wavelengths: 1064 nm, 532 nm, 355 nm
- Optical energy: 850 mJ @ 1064 nm, 400 mJ @ 532 nm, 300 mJ @ 355 nm
- Pulse width: 5-10 ns
- Repetition rate: 1-10 Hz
- Sample rotation stage: 4 mdeg precision
- Signal detection: Low light detection PMT unit
- Spectrometer: resolution 0.001 nm, wavelength range: 300-900 nm
Capabilities
This set-up is effectively used to make non-linear optical coefficients of functional materials in different configurations. The rotation stage that is associated with it could be employed to generate Maker fringes and therein one can calculate coherence length and NLO coefficients.
Low temperature Raman and Photoluminescence Spectrocopy
Features
- Laser source: Diode lasers (405nm, 532 nm, 589 nm)
- Cryostat: Variable Temperature Pour Fill Liquid Nitrogen Cryostat (77 K)
- Temperature controller – Lakeshore 320
- Spectrometer- ihR550 –Horiba Dispersive spectrometer
- Grating: 2400,1200,600 g/mm
- Resolution: – 0.001 nm to 1 nm
- Optical Filter- Low pass, high pass and band pass filter
- Multi-channel Detector: CCD array (1024 x 256 pixels)
- Single channel detector: PMT (200 nm to 400 nm)
Capabilities
This platform allows one to monitor both vibrational and electronic transitions of various kinds of samples using both resonant and non-resonant laser excitation. The non-ambient, low temperature measurement permits one to investigate temperature dependent phase transitions to establish structure-property correlations.
Channel Spectrum Method
(Birefringence measurements)
Features
- Light Source: Tungsten Halogen lamp
- Constant Deviation Spectrometer (CDS) along with a set of polarizers to make dispersion measurements
Capabilities
This set-up would enable one to make birefringence measurements of a variety of samples at different wavelengths of light.
Refractive index measuring set-up
Features
- Laser source: RGB lasers
- Optical layout: A graduated platform to measure the angle of rotation
- Optical components: High quality polarizers along with sample mounts to hold single crystals and glass ceramics
- Optical power meter: Coherent make (10nW – 10kW)
Capabilities
A wide range of refractive indices of materials can be measured at different wavelengths of light.