Equipment in the ISM Characterization Lab
- Scanning Probe Microscope (SPM), or Atomic Force Microscope (AFM), mounted on inverted fluorescence microscope
Capabilities: (1) Measurements of surface topography with nanometer resolution in air and liquid; (2) Simultaneous topographical and fluorescence imaging; (3) Measurements of localized mechanical (adhesion and stiffness), electrical (I-V and surface potential), magnetic, or thermal properties (surface temperature and thermal conductivity).
- Bright-Field/Fluorescence Microscope with High-Precision Micromanipulators
Capabilities: (1) 10x, 40x, 60x (oil) lenses available; (2) Filter cubes that cover the whole near-UV to near -IR spectra for fluorescence imaging; (3) Fully automated for recording time-lapse, focal series and tiling (taking images of sections of a large area and then stitching them together); (4) High-precision micromanipulation and microinjection; (5) Temperature controlled stage (0-100 ºC) available.
- Parallel-Plate/Cone-Plate Rheometer
Model: MCR302 (Anton Paar)
Capabilities: (1) Oscillatory measurements of storage and loss moduli for viscoelastic materials; (2) Rotational measurements of viscosity for viscous liquids; (3) Measurements of time- or temperature-dependent flow or viscoelastic behavior; (4) Peltier temperature control device (-40 – 200 °C) available.
- Dual-Head Rheometer
Model: MCR702 TwinDrive (Anton Paar)
Capabilities: (1) Double-gap configuration that supports rotational viscosity measurements for dilute solutions and pure solvents; (2) Direct strain control via bottom plate displacement; (3) Counter rotation of the two motors that tunes the vertical position of the stagnation layer; (4) Oscillatory measurements of storage and loss moduli for viscoelastic materials; (5) Measurements of time- or temperature-dependent flow or viscoelastic behavior; (6) Convection temperature control device (-20 – 180 ºC) available; (7) Polarized microscope and transparent measuring syestems for synchronized imaging and rheological measurements. (***New capabiliy added December, 2016.)
Note: We are the Mid-Atlantic reference site for Anton Paar GmbH, and the first US lab to have an MCR702 TwinDrive rheometer.
- Dual-Beam Cross-Correlation Light Scattering Instrument
Model: 3D LS spectrometer (LS Instruments)
Capabilities: (1) Particle sizing for both dilute and concentrated solutions (multiple scattering suppression); (2) Molecular mass characterization; (3) Programmable DLS measurements at multiple angles; (4) Sample goniometer that enables measurements of non-ergodic samples; (5) Squre cell for extremely concentrated solutions; (6) Sample vat temperature controlled via external circulator (10 – 70 °C).
Note: LS Instruments is by far the only manufacturer in the world that provides reliable dual-beam, multiple-angle DLS systems. We are the Mid-Atlantic reference site for LS Instruments.
- Low-Volume Isothermal Titration Calorimeter (ITC)
Model: Nano-ITC (TA Instruments)
Capabilities: (1) Measurements of molecular binding, dissociation, or reaction kinetics in dlute solutions, especially suited for biological samples with limited availability; (2) Temperature range: 2 – 80 ºC.
- Multi-Cell Differential Scanning Calorimeter (DSC)
Model: MC-DSC (TA Instruments)
Capabilities: (1) Measurements of thermal transitions in solid and liquid samples; (2) Temperature range: -30 – 150 ºC; (3) Large sample capacity (~ 1 g) allows for enhanced detection of small heat effects.
- UV-visible-near IR absorption spectrometer
Model: Cary 5000 (Agilent)
Capabilities: (1) Absorption spectroscopic measurements in the 175-3300 nm range for solutions, thin films, and powders (internal diffuse reflectance); (2) Peltier cuvette holder with a regular working temperature range of -10 – 150 ºC. Lower temperatures down to – 55 ºC are also possible with pre-cooled circulating fluid.
- Universal Mechanical Tester (*** New equipment acquired July, 2017)
Model: 5965 Dual Column (Instron)
Capabilities: (1) Tensile and shear tests with load capacity up to 5 kN and wide speed range (0.001 to 3000 mm/s); (2) Pneumatic grips that maintain constant gripping force on samples; (3) Video camera for recordings of the tests that can be synchronized with the measured force curves; (4) Extensometer for displacement measurement with an accuracy of 1 micron. (5) Add-on optical microscope to characterize change in sample morphology during mechanical measurements. (*** New capability added June, 2018.)
- Surface Plasmon Resonance (SPR)
Model: 404pi (BiOptix)
Capabilities: (1) Measurements of molecular adsorption onto pristine or modified metal surfaces, such as binding of flowing small molecules by immobilized proteins; (2) Fully automated multi-channel fluidics; (3) Versatile surface chemistries.
Note: We are the Mid-Atlantic reference site for BiOptix.
Doctor-Blade Coater (MTI Corporation), 12″x24″, plate temperature up to 100 ºC. (*** New equipment acquired August, 2017.)
Dual-extruder 3D printer (Leapfrog Creatr) with multiple materials available (PLA, ABS, PVA, Nylon, etc.)
Benchtop plasma cleaner (PlasmaEtch PE25-JW)
Stand mixer (Cole-Parmer Servodyne) with speed/torque monitoring and control, 150 – 6,000 rpm
Universal spin-coater (Laurell Technologies) with digital process controller, 100 – 12,000 rpm
Wafer spin-coater (MTI Corporation), 500 – 8,000 rpm
Analytical balance (Mettler Toledo) with max weight of120 g and readability of 0.1 mg
Benchtop centrifuge with max speed of 4,000 rpm and 6×50 mL capacity
- Sonicator, Vortex mixer, Hot plate