Product Overview
The Harrick Praying Mantis™ is the premier optical solution for Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS), designed to overcome the fundamental limitations of analyzing scattering solids and powders. At its core is a sophisticated optical layout featuring two 6
, 90° off-axis ellipsoids that precisely focus the incident beam and capture diffusely reflected radiation with unrivaled efficiency. This distinctive "off-axis" configuration is engineered to deflect specular (mirror-like) reflectance away from the collection optics, effectively eliminating restrahlen bands and spectral distortions that commonly plague standard reflectance measurements.Optimized for the high-stakes environment of heterogeneous catalysis and advanced material research, the Praying Mantis™ serves as a versatile workstation for real-time surface analysis. The system is built for rapid productivity, utilizing pivoting ellipsoids for immediate sample access and the proprietary PermaPurge™ housing to ensure the internal spectrometer environment remains stable during exchanges. When paired with Harrick’s specialized reaction chambers, the Praying Mantis™ becomes a powerful tool for operando studies, allowing researchers to monitor chemical transformations at temperatures ranging from cryogenic levels to over 900°C and under high-vacuum or high-pressure regimes.
Product Demonstration
Key Features
- Patented Off-Axis Optics: Specifically designed to minimize the detection of specular components, ensuring high-fidelity, quantitative diffuse reflectance data.
- Superior Signal Recovery: Precision ellipsoidal mirrors collect a high percentage of scattered radiation, making it ideal for low-absorbing or highly dark materials.
- Operando Research Ready: Seamlessly integrates with environmental reaction chambers for the in-situ study of gas-solid interactions and catalytic mechanisms.
- PermaPurge™ Technology: Maintains the integrity of the spectrometer's purge during sample loading, significantly reducing downtime and atmospheric interference.
- Precision Sample Positioning: Features a micrometer-style height adjustment for reproducible sample placement at the focal point of the IR beam.
- Universal Compatibility: Custom-mated hardware allows for easy installation into nearly all commercial FTIR and UV-Vis-NIR spectrometer sample compartments.
- Versatile Sampling Kits: Includes both standard (10 mm) and microsampling (3 mm) cups to accommodate limited sample volumes without sacrificing sensitivity.
Specifications
| Optical Configuration | Dual 6:1, 90° off-axis ellipsoids |
| Spectral Range | UV, Visible, and Infrared (NIR/MIR/FIR) |
| Specular Suppression | Optimized azimuthal collection angle of 120° |
| Sample Cups | 10 mm (0.25 ml volume) and 3 mm (0.03 ml volume) |