WITec GmbH
WITec Alpha - Model 300 RAS -Atomic Force Microscope
FromWITec GmbH
The unprecedented all-in-one alpha300 RAS combines Raman, AFM, and SNOM imaging in a single instrument for the utmost flexibility and sophisticated sample characterization. By combining the imaging techniques, simultaneous Raman-AFM analysis, TERS, and Nearfield-Raman (Raman-SNOM) imaging can be easily performed.
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- All features of the alpha300 R (Raman), the alpha300 A (AFM), and the alpha300 S (SNOM) microscope provided in one instrument
- Excellent combination of high-resolution surface imaging (SNOM), comprehensive surface characterization (AFM), and chemical imaging (Raman)
- Ideally suited for combined techniques such as Nearfield-Raman imaging and simultaneous Raman-AFM measurements
- Convenient switching between the measurement techniques is realized by a rotation of the objective turret
- No sample movement between the measurements
Raman Operation Modes:
- Raman spectral imaging: acquisition of a complete Raman spectra at every image pixel
- Planar (x-y-direction) and depth scans (z-direction)
- Image stacks: 3D confocal Raman Imaging
- Time series
- Single point Raman spectrum acquisition
- Single-point depth profiling
- Ultrafast Raman Imaging (1300 spectra per second) optional available
- Confocal fluorescence microscopy
- Bright Field Microscopy
- Dark Field, Phase Contrast and DIC optional
- Upgradable for epi-fluorescence applications
- Contact Mode
- AC Mode (Tapping Mode)
- Digital Pulsed Force Mode (DPFM)
- Lift Mode™
- Magnetic Force Microscopy (MFM)
- Electric Force Microscopy (EFM)
- Phase Imaging
- Force Distance Curves
- Nano-Manipulation/Lithography
- Lateral Force Microscopy (LFM)
- Chemical Force Microscopy (CFM)
- Current Sensing Mode
- others optional
SNOM Operation Modes:
- Scanning Near-field Optical Microscopy (SNOM) modes: bottom up and top down mode, collection mode
- Confocal Microscopy (CM) modes:
- Transmission
- Reflection
- Fluorescence (optional)
- SNOM-AFM combinations: AFM operation modes of alpha300 A included or optional available
- Acquisition of force-distance curves and light-distance curves
- Fixed-bottom illumination
- Total internal reflection illumination (optional)
- Research grade optical microscope with 6 x objective turret
- Video system: eyepiece color video camera
- LED white-light source for Köhler illumination of tip and sample
- High sensitivity b/w video camera to view sample and SNOM/AFM tip in transmission
- Manual sample positioning in x- and y-direction, 25 mm travel
- Microscope base with active vibration isolation system
- Piezo-driven scan stage (scan range 100 x 100 x 20 µm; others optional)
- Usually 120 mm in x- and y-direction, 25 mm in height (adapter for larger heights available)
- WITec software for instrument and measurement control, data evaluation and processing
Every alpha300 RAS can be upgraded to the + Version alpha300 RAS+ for automated measurements. It includes:
- Automated motorized sample positioner in x-, y-, and z-direction, 25 mm travel range (50 mm travel range optional)
- Automated confocal Raman imaging (25 x 25 mm²; optional 50 x 50 mm²)
- Automated multi-area and multi-point measurements
- 2D and 3D Raman mapping
- Raman depth profiling
- Autofocus