Background
Two-dimensional materials have long been a frontier research hotspot in condensed matter physics and materials science. Because 2D materials are only one or a few atomic layers thick, their physicochemical properties are highly sensitive to external conditions. Variations in layer number, the presence of defects, stress distribution, and doping levels can all significantly alter material performance. Therefore, efficient, accurate, and non-destructive characterization of the structure and properties of 2D materials is a key issue in advancing both fundamental research and practical applications.
Raman Spectroscopy: The "Molecular Fingerprint" Detector for 2D Materials
Raman spectroscopy is generated based on the interaction between light and chemical bonds within a material. Since it depends on the structure of the scattering molecules, it can serve as a fingerprint spectrum of molecular vibrational energy levels in materials.
Through features such as Raman peak position, peak intensity, and full width at half maximum (FWHM), Raman spectroscopy can accurately reveal:
✅ Material type and number of layers
✅ Edge chirality and lattice orientation
✅ Doping and alloy composition
✅ Stress, thermal effects, and structural phase transitions
Compared with other chemical analysis and characterization techniques, Raman spectroscopy offers advantages such as fast measurement, convenient operation, non-destructive analysis, and high spatial resolution. It is one of the important characterization methods in two-dimensional materials research.
Smart-Raman: Intelligent Raman Microscope
Designed for precise characterization of two-dimensional materials
The Smart-Raman intelligent Raman microscope, independently developed and manufactured by JAYITEC, integrates optical microscopy with Raman spectroscopy. Featuring high sensitivity and high resolution, it enables micro-area characterization and spectral imaging, providing an accurate and efficient solution for fundamental research and application development of two-dimensional materials.
In addition, the instrument can be integrated with an electrochemical workstation to build an in-situ electrochemical micro-area Raman research platform. This enables real-time spectral acquisition with micrometer-level spatial resolution, providing experimental support for mechanism investigation and performance optimization of two-dimensional materials in fields such as electrocatalysis and energy storage devices.
Application Case：Precise structural analysis of two-dimensional materials using MoS₂ as an example
To meet the demand for fine characterization of micrometer-scale two-dimensional materials, Smart-Raman supports Raman spectral acquisition and chemical imaging analysis with high spatial resolution.
Taking molybdenum disulfide (MoS₂) as an example:
1. Collect Raman signals of the in-plane vibration mode E₂g（≈387 cm⁻¹）and the out-of-plane vibration mode A₁g（≈405 cm⁻¹）;
2. Generate Raman imaging based on signal contrast to visually present the spatial distribution, structural uniformity, and defect regions of the material;
3. Calculate the peak separation Δ = A₁g − E₂g. When the value falls within the range of 17–20 cm⁻¹, the material can be identified as a monolayer structure, enabling rapid and non-destructive layer-number identification.
Core Advantages：Enabling precise characterization of two-dimensional materials
01 Breaking spatial limitations
Compact integrated design, easily compatible with gloveboxes and complex operating conditions.
02 Revealing molecular fingerprints
High sensitivity and spatial resolution enable accurate micro-area chemical identification and spectral imaging.
03 Leading technology integration
Optional built-in electrochemical workstation enables precise synchronized detection of electrochemical signals and Raman spectra.
04 Breaking spatial limitations
Integrated with an advanced particle recognition and positioning algorithm, enabling high-throughput, automated intelligent particle analysis.
Smart-Raman Intelligent Raman Microscope combines high precision, high integration, and intelligent operation to overcome challenges in two-dimensional material characterization, supporting scientific innovation and the upgrading of industrial applications