Our Core Technologies

Our team has been working with laser technology for over 20 years. This experience gives us in-depth knowledge of various optical spectroscopy techniques.

・Raman Scattering Spectroscopy

・Hyperspectral Imaging

・VSFG（Vibrational sum frequency generation spectroscopy）

・SERS（Surface-enhanced Raman spectroscopy）

・Brillouin Scattering Spectroscopy

・SEIRAS

SERS (surface-enhanced Raman scattering) spectroscopy is a powerful analytical technique that allows for highly sensitive detection of trace substances.

By utilizing nanostructured surfaces, it is possible to clearly identify extremely small amounts of molecules and chemical species that are difficult to detect using conventional Raman spectroscopy.

This will enable more accurate and efficient analysis, and is expected to be applicable in a variety of fields, including environmental monitoring, medical diagnosis, and rapid detection of chemicals.　

Food industry

Illegal additives such as beta-carotene, vitamins, and melamine in vegetable juice

Agriculture

Diluted pesticides and residual fungicides such as ferbam and TBZ on crop surfacess

Formation of silver compounds

Monitoring of reactants with silver in the SERS substrate

Sulfur compound

Sulfites added to wine and sulfur compounds volatilized from garlic, onions, durian, etc.

In normal SERS measurements, the object to be measured is dropped onto the surface of a SERS substrate, but we have prepared the following types of SERS: (1) A rod-shaped substrate that can be easily immersed in a small amount of liquid; (2) A press-type substrate that can directly measure substances adsorbed on its surface; (3) A pre-concentration substrate that is suitable for trace amounts and low-concentration aqueous solutions. In addition, because measurements can be made from the back side of the glass substrate, it is also suitable for real-time detection in flow systems.

１）Prepare a Raman spectrometer, SERS substrate, and wine holder.

２）One side of the holder has a filter attached, which allows only volatile compounds to pass through.  Take 100mL of the wine you want to measure and add it to the holder.

３）Place the holder on the SERS substrate and wait 10 minutes for the volatile components to reach the SERS substrate.

４）By irradiating a laser, such peaks can be observed. The first peak, below, reflects stretching vibration of S02; The Second peak reflects angular displacement vibration. The concentration of potassium pyrosulfite can be inferred from peak intensity.

What is Raman spectroscopy?

Raman spectroscopy is one of the most popular and oldest techniques in the field of laser spectroscopy.

As such, various kinds of information can be obtained by its use: chemical structure analysis, concentration analysis, molecular/crystal structure/crystallinity analysis, degradation analysis, etc. Confocal Raman imaging resolves local inhomogeneities in your sample, allowing you to non-destructively investigate sample composition in detail.

Information that can be obtained: component analysis, residual stress distribution (e.g. semiconductors, injection molded plastics), charge density distribution in doped semiconductor wafers, 3D imaging, etc.

What is Brillouin Scattering Spectroscopy??

Brillouin scattering spectroscopy (BSS) is a technique that uses the inelastic scattering of light from phonons and magnons to probe the elastic, viscoelastic, and magnetic properties of materials. Recently, BSS has been successfully applied in biomedical and bioengineering applications, such as mechanical mapping of human tissues. As an inelastic light scattering method, it is ideally suited to be coupled with Raman spectroscopy.

What is SFG spectroscopy (sum frequency generation spectroscopy)?

SFG spectroscopy is a nonlinear optical technique for analyzing molecular structures at interfaces and surfaces. This technique is widely used in interface chemistry, materials science, and biomolecular research because it can obtain surface-specific signals.

We provide highly accurate SFG spectrometry services and expert support for data analysis. With cutting-edge technology, we strongly support our customers’ research and development.

What is SEIRAS (Surface Enhanced Infrared Absorption Spectroscopy)?

This is a type of infrared spectroscopy technique that enhances the infrared absorption of molecules adsorbed on a metal surface, improving detection sensitivity. By utilizing surface plasmon resonance, it effectively enhances the infrared absorption of low-concentration molecules and molecules close to the surface, which are difficult to detect using conventional infrared spectroscopy. This allows for detailed analysis at the molecular level, and is useful in fields such as surface chemistry, catalytic reactions, and biosensing.