Research

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Mac Lab

Materials Characterization Laboratory

The Materials Characterization Laboratory (MAC Lab) is a multiuser research facility allowing access to a variety of sophisticated instruments to allow the characterization of materials. The facility is well equipped to carry out magnetic property research using a SQUID/Evercool MPMS magnetometer and two liquid helium cooled magnetometers (MPMS & PPMS), x-ray diffraction of powders and single crystals, a variety of optical spectrometers (UV/VIS/NIR, FT-IR, fluorescence) and thermal analysis (SDT & TGA), atomic force and optical microscopy, Raman vibrational spectroscopy using continuous wave (cw) lasers and transient absorption and emission spectroscopy using pulsed lasers.

Phone Location Hours Facility Director
(850) 644.3468 1008, 1011, 116, 3701 CSL 8:00 – 5:00 M-F Dr. J.S. Raaj Vellore Winfred

Laboratory Instruments

Quantum Design MPMS SQUID Magnetometer


Description:

Magnetometer using superconducting magnetic loops containing Josephson junctions to measure very low magnetic fields. It’s equipped with an Evercool liquid helium compressor. (SQUID = superconducting quantum interference device; MPMS = magnetic properties measuring system)

Specifications:

  • Model: MPMSXL-7
  • Temperature Range: 1.9-400 K; 0.001 – 10 K/min sweeps
  • Superconducting magnet strength: 7 Tesla

Rate:

Internal: $30/day
External: $230/day

Liquid Helium Rate:

Internal: $140/day
External: $700/day

Location:
CSL 1008
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Asylum Research AFM


Description:

Atomic force microscope (AFM) using a dual view base for both opaque and transparent samples, PEEK cantilever holder, (TLP)-SA Base-3D-Dual View, piezo actuators to move the sample in X & Y (100 µm with flexure amplification), to move the cantilever in Z (16 µm) and to oscillate the cantilever for AC mode, Bioheater and Polymer Heater.

Specifications:

  • Model MFP-3D
  • AC Mode (tapping) 50-300 kHz
  • Contact Mode
  • Resolution depends on the mode and cantilever tip used/li>

Rate:

Internal Users: $5/hr
External Users: $25/hr

Location:
CSL 1008B
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TA Instruments SDT: Simultaneous DSC & TGA


Description:

The SDT is capable of collecting both differential scanning calorimetry (DSC) and Thermogravimetric analysis (TGA) data at the same time by measuring the heat flow and weight changes associated with phase transitions and reactions in samples in the temperature range from room temperature to 1500oC. The SDT uses 90 µl alumina sample cups (supplied by the user) to hold samples and for the reference beam.

Specifications:

  • Model: Q600
  • Temperature range: ambient to 1500°C
  • Maximum heating rate: 100°C/min to 1000°C; 25oC/min to 1500°C

Rate:

Internal: $6/hr
External: $30/hr

Location:
CSL 116

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NanoDrop ND-1000 Spectrophotometer


Description:

The ND-1000 measures 1 µl liquid samples by trapping the liquid between two optic fibers. The gap between the fibers is controlled to give either a 1 mm or 0.2 mm light path. A pulsed xenon flash lamp light source passes through the sample and is dispersed over a fixed wavelength range onto a linear CCD detector array. The ND-1000 is designed to measure very small samples to yield qualitative results.

Specifications:

  • Sample size: 1 µl
  • Spectral range: 220-750 nm
  • Path length: 1 mm (with autoranging to 0.2 mm)
  • Wavelength range: 220-750 nm
  • Wavelength resolution: 3 nm (FWHM @Hg 546 nm)

Rate:

Internal: $6/hr
External: $30/hr

Location:
CSL 116
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Horiba JY Fluoromax-4 Fluorometer


Description:

Fluorometer set up to perform either steady state fluorescence spectra or time correlated single photon counting (TCSPC) fluorescence lifetimes.

Specifications:

  • Detection: Hamamatsu R928P photomultiplier operating in photon-counting mode, 210-780 nm range
  • Steady State: Temperature-controlled Peltier sample holder, temperature range -10 to +110oC
  • Path length: 1 mm (with autoranging to 0.2 mm)
  • TCSPC: Measures lifetimes ≥250 ps; NanoLED© excitation pulsing ≤1 MHz @ 295, 370, 560, 625 & 740 nm; FluoroHub electronics, DataStation collection software & DAS6 lifetime analysis software by the IBH division of Horiba

Rate:

Internal: $3/hr
External: $15/hr

Location:
CSL 116
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TA Instruments TGA 550

TGA 550

Description:

The thermogravimetric analysis (TGA) is a thermal weight-change analysis instrument using a platinum pan to hold the sample suspended in a furnace. A liquid heat exchanger dissipates heat from the furnace. The attached quadrupole mass spectrometer can be used for evolved gas analysis.

Specifications:

  • Temperature Range: Ambient to 1000 °C
  • Temperature Accuracy: ±1 °C
  • Temperature Precision: ±0.1 °C
  • Heating Rate (Linear): 0.1 to 100 °C/min
  • Sample Weight Capacity: 1000 mg
  • Weighing Precision: ±0.01 %
  • Resolution: 0.1 µg
  • MS Mass Range: 1 – 300 amu

Rate:

Internal: $12/hr
External: $30/hr

Location:
CSL 116
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Hamamatsu Quantaurus-QY Spectrometer


Description:

Dedicated fluorometer for measuring photoluminescence absolute quantum yields (PL-QY) consisting of a xenon lamp light source, integrated sphere sample chamber and CCD detector.

Specifications:

  • Model C11347-11
  • 150 W Xenon arc lamp light source
  • Path length: 1 mm (with autoranging to 0.2 mm)
  • T250-850 nm selectable excitation wavelength
  • back-illuminated cooled 1024 channel CCD detector
  • 200-950 nm measurement wavelength range

Rate:

Internal: $6/hr
External: $30/hr

Location:
CSL 116
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Nikon Eclipse Ti Inverted Microscope


Description:

Epifluorescence inverted microscope equipped with a LiveCell sample holder (model CC378A), Intensilight C-HGFI light source, 2 Sutter Instruments Lambda SC Smart shutters and Photometrics Coolsnap HQ2 CCD camera (1392×1040, 6.45 µm2 pixels).

Specifications:Model Nikon Eclipse TI-DH

Objectives:

  • Plan Apo TIRF 60x/1.45 Oil,
  • Plan Apo TIRF 100x/1.45 Oil,
  • Plan Fluor 10x/0.30 DIC,
  • S Plan Fluor ELWD 20x/0.45,
  • S Plan Fluor ELWD 40x/0.60 DIC

Rate:

Internal: $5/hr
External: $25/hr

Location:
CSL 1011B CSL
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PerkinElmer Lambda 950 UV/VIS/NIR Spectrophotometer


Description:

The Lambda 950 is a wavelength scanning double-beam instrument operating in the ultraviolet, visible and near-infrared (UV/VIS/NIR) using either a deuterium or tungsten-halogen light source, one of two gratings – one for the UV/Vis, the other for the NIR – in the monochromator and two detectors – a Hamamatsu R6872 photomultiplier for the UV/VIS and a Peltier cooled PbS detector for the NIR.

Specifications:

  • Wavelength range: 190-3300 nm
  • Spectral resolution: ≤0.05 nm UV/VIS; ≤0.20 nm NIR
  • Bandpass: 0.05-5.00 nm in 0.01 nm increments UV/VIS; 0.20-2.00 nm in 0.04 nm increments NIR
  • Light beam passes through the sample compartment 90 mm above the base plate, 3-12 mm beam height

Rate:

Internal: $3/hr
External: $15/hr

Location:
CSL 116
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JASCO 6800 FT-IR Spectrometer

JASCO

Description:

The FT-IR spectrometer is equipped with different light sources and detectors that enable measurements from Visible to Far IR regions. An attenuated total reflectance (ATR) sample chamber consisting of a monolithic diamond crystal with AR coating is used to characterize various types of samples (solids, powder, liquids and pastes). In addition to ATR, the instrument also has transmittance, grazing angle reflection (for thin films) and diffuse reflection accessories.

Specifications:

  • Spectral range: 50 – 25000 cm-1
  • Minimum resolution: 0.07 cm-1
  • Grazing angle accessory: 55° – 85°

Rate:

Internal: $5/hr
External: $10/sample

Location:
CSL 116
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Horiba JY LabRam HR Evolution Raman Spectrograph


Description:

Microscope based Horiba LabRAM HR Evolution is a fully confocal, high-resolution (800 mm focal length) spectrometer that is well suited for broad range of applications. The instrument is coupled to three excitation lasers, has two selectable gratings and a CCD camera for detection. True confocal microscope along with motorized XYZ stage, offers high resolution 2D and 3D Raman images. Accessories include optics for polarized Raman spectroscopy and a setup to measure liquid and large samples in free space.

Specifications:

  • Gratings: 600 gr/mm & 1800 gr/mm (2400 gr/mm & 3600 gr/mm gratings are available upon request)
  • Excitation lasers: 532 nm (100 mW), 785 nm (90 mW), 633 nm (17 mW)
  • Detector spectral range: 200 nm – 1050 nm
  • XYZ stage: XY resolution (min step size) = 50 nm,  Z resolution (min step size) = 0.01 µm
  • Polarization optics spectral range : 400 nm – 1100 nm

Rate:

Internal: $6/hr
External: $30/hr

Location:
CSL 3701
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Transient Absorption Spectrometer


Description:

The Edinburgh Instruments LP980-KS Laser Flash Photolysis Spectrometer can measure laser-induced transient absorption and emission kinetics and spectra using either a kinetic detector (photomultiplier tube for the UV/VIS, InGaAs detector for the NIR) or a gated intensified CCD detector using time gates as short as 10 ns. The pump laser is a Nd:YAG laser operating at 355 nm (third harmonic) to pump an Optical Parametric Oscillator (OPO). The system is normally operated at 1 Hz. The probe is a 150 W pulsed Xenon arc lamp for kinetic and spectral measurements from multi-ns up to 300 µs. A 50 W Tungsten Halogen lamp is used for longer time scales. Most spectrometer and laser functions are computer controlled.

Specifications:

  • Edinburgh Instruments LP980-KS Laser Flash Photolysis Spectrometer:
  • Sources: 150 W Xenon lamp, CW and pulsed (230-900 nm); 50 W tungsten halogen lamp (>300 nm)
  • Sample chamber with absorption and emission sample holders and right angle and quasi-collinear optics
  • Emission Monochromator: TMS302-A 300 mm focal length, with 3 gratings and two detector ports
  • Andor iStar intensified CCD detector (1024×256) with W-AGT photocathode (180-850 nm), 25 mm intensifier, minimum 10 ns gate width
  • Hamamatsu R928 photomultiplier detector (200-870 nm), 5 ns minimum response optimized for high-light conditions
  • Hamamatsu R928 photomultiplier detector operating in Multichannel Scaling MCS mode and optimized for low-light conditions
  • Hamamatsu G12180-230A InGaAs photodiode detector with 3 mm diameter active area (900-1650 nm), 500 ns response
  • Continuum laser system:
  • Continuum Surelite EX Nd:YAG laser, 10 Hz, 745 mJ/pulse @ 1064 nm, with 532 nm, 355 nm, and 266 nm harmonic generators
  • Continuum Horizon II Optical Parametric Oscillator (OPO), Mid band OPO type II BBO, 192-2750 nm, 4-7 cm-1 bandwidth, pulse energy is wavelength dependentContinuum Horizon II Optical Parametric Oscillator (OPO), Mid band OPO type II BBO, 192-2750 nm, 4-7 cm-1 bandwidth, pumped by the 355 nm (& 1064 nm if necessary) output of the Nd:YAG laser, pulse energy is wavelength dependent

Rate:

Internal: $6/day
External: $30/day

Location:
CSL 3701
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