Colour-specific microfluidic droplet detection for molecular communication

Bartunik, Max; Fleischer, Marco; Haselmayr, Werner; Kirchner, Jens

doi:10.1145/3411295.3411304

Cited by 15 publications

(19 citation statements)

References 20 publications

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“…where t drop denotes the observed droplet duration at the sensor, ∆d = 6.35 mm the fixed distance between the two sensors and ∆t the delay between detection of the same droplets rising edge at the two sensors. We demonstrated the basic principle for droplet size detection in [5]. Now, to mitigate a linear offset between the calculated droplet size using the developed sensor and the result of a camera-based video processing software used as reference, we extend (1) with correction factors m and c:…”

Section: A Measurement Of Droplet Sizementioning

confidence: 99%

“…Using the spectral sensor the colour of microfluidic droplets can be determined. Again, a proof of concept with six different colours was made in [5]. We now present a detailed analysis of the sensor specificity and inspect a sample transmission scenario with an alphabet of 126 colours.…”

Section: B Measurement Of Droplet Colourmentioning

confidence: 99%

“…Droplet-based microfluidic setups provide a promising platform for various lab-on-chip (LoC) applications, such as drug screening or capillary electrophoresis [1], [2]. In some cases it is desirable to encode and transmit information using droplets or measure droplet parameters in such a setup [3]- [5]. Dropletbased communication was presented as a theoretical principle in [6], a demonstration of first practical applications was performed in [7].…”

Section: Introductionmentioning

confidence: 99%

“…A promising low-cost optical sensor device with a compact design, suitable for detection of various droplet parameters, such as size and colour in a microfluidic setup, was proposed in [5]. The aim of this work is to further investigate the capabilities of this sensor device for droplet characterisation in terms of droplet size and colour, which can be used for information encoding in data transmission scenarios, as well as for other LoC applications.…”

Section: Introductionmentioning

confidence: 99%

“…Data is recorded with a microprocessor and can be retrieved over a serial connection. The attached cables connect to the separate LED light sources[5].…”

mentioning

confidence: 99%

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Advanced Characterisation of a Sensor System for Droplet-Based Microfluidics

Bartunik¹,

Fleischer²,

Haselmayr³

et al. 2021

Preprint

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Droplet-based microfluidics show a large potential for lab-on-chip applications and new data transmission scenarios. Microfluidic chips contain channels in the submillimeter range allowing for flow of droplets. In a previous contribution, a new sensor design for droplet size and colour detection, consisting of an infrared and a colour sensor, was presented and a first proof-of-concept was shown. In this work, an in-depth analysis of both concepts is presented. In particular, we show that a high precision can be achieved when using the sensor to measure droplet sizes while using video processing software as reference. Furthermore, a colour alphabet consisting of 126 individual values is transmitted and detected using a machine learning model. The high specificity of achieved colour measurement allows both for colour coded data transmission scenarios and the analysis of colour reagents in lab-on-chip applications.

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Section: A Measurement Of Droplet Sizementioning

confidence: 99%

Section: B Measurement Of Droplet Colourmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Data is recorded with a microprocessor and can be retrieved over a serial connection. The attached cables connect to the separate LED light sources[5].…”

mentioning

confidence: 99%

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Advanced Characterisation of a Sensor System for Droplet-Based Microfluidics

Bartunik¹,

Fleischer²,

Haselmayr³

et al. 2021

Preprint

Self Cite

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Towards practical implementation of molecular communication: A cost‐effective experimental platform based on the human circulatory system

Bayat,

Mostafavi,

Arabameri

2024

IET Communications

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Recently, there have been numerous studies exploring the field of molecular communication (MC) systems. However, due to the high cost and limited availability of advanced micro/nano‐scale equipment, most of these works remain purely theoretical, with only a few being examined through experimental platforms. Additionally, the absence of a suitable model for flow‐assisted MC‐based systems poses another significant challenge. This research focuses on the potential applications of MC technology within the human body. To address the limitations mentioned above, a closed‐loop experimental platform based on the human circulatory system is proposed. This platform offers a cost‐effective and accessible solution for studying MC systems. The implementation process involves a brief discussion about the circulatory system model. By varying flow rates and the quantity of released information particles, channel impulse responses are obtained. Based on the observed experimental data, the authors have successfully developed a new theoretical model that accurately fits the experimental data. The model demonstrates a strong level of agreement with the observed results. This model demonstrates its suitability for flow‐assisted MC‐based systems.

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