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We envision

water digitalization

most advanced

optical system and analysis.

01 Signal Amplification Technology

Elongated Optical Path Lengths

with Chaotic Scattering

​The.Wave.Talk has developed CSMS™ (Chaotic Scattering Material and Structure) that amplifies the optical path length of the laser before it is measured by the sensor. As a result, the laser covers the entire area in the sample, allowing the detection of low-concentration foreign substances with high accuracy and precision. ​


Compared to conventional technologies that rely on single scattering events, The.Wave.Talk's technology enables the detection of foreign substances at concentrations up to 10 times lower, achieves compact implementation by reducing the size by 3 times, and improves the precision of bacterial measurement by more than 15 times.

Single Scattering

Conventional technologies usually utilize a straight laser beam; thus, a single scattering event happens only in small fraction of the sample. This limits the detection of low concentrations of foreign substances.

Chaotic Scattering

The.Wave.Talk's CSMS™ technology enables multiple light scattering at the border of the sample holder, allowing the laser to cover all regions within the sample. This enhances scattering events occurred at a foreign substance, enables the detection of foreign substances at even low concentrations.

02 Signal Analysis Technology

Precise & Real-time

Speckle Analysis with AI Algorithms

Due to multiple light scattering at CSMS™, it produces a speckle image resulting from constructive and destructive interferences of laser. If the sample is clear, the speckle pattern remains static over time. However, the presence of foreign substances results in dynamic speckle patterns. The.Wave.Talk's technology captures these time-varying speckle patterns using an image sensor, and calculates the correlation between speckle images to quantify foreign substances. TThe.Wave.Talk has developed artificial intelligence to analyze these patterns, enabling the detection and quantification of ultra-low concentration bacteria (<100 cfu/mL). This AI-enhanced technology broadens its applicability from general water quality monitoring to the biomedical industry.

The core of this technology lies in analyzing time-varying speckle patterns, ensuring that the data quality remains unaffected by sensor damage, light power decay, or impurities in the sample holder. This results in a maintenance-free system that operates reliably even with a simplified power supply.

Static Pattern

in Distilled Water

Dynamic Pattern

in Contaminated Water

Contaminated water includes foreign substances in water, and the activities of those substances produce time-varying speckle patterns. The changes in these patterns are proportional to the concentrations of the foreign substances, allowing for their quantification through the analysis of the speckle pattern.

Speckle patterns produced in clear distilled water remain stable over time because multiple light scattering is a deterministic process, as illustrated in the light schematic figure.

03 Miniaturizing Technology

1/10 size ASIC Chip and

1/5 size Laser

with Improved Performance

By developing an ASIC chip(Application-Specific Integrated Circuit) that integrates the CMOS camera and MCU, which are key components of existing water quality sensors, we have successfully achieved significant miniaturization. Additionally, we developed a smaller, improved performance laser by designing a laser drive circuit to maintain consistent laser output and a module to reduce the size of the laser. Thanks to this miniaturization technology, our water quality sensor can be easily applied to all water-related touchpoints, from infrastructure such as pipelines and membranes to being embedded in smart home appliances.

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