CMOS-Based Capacitive Sensor Array Dedicated to Microfluidic Studies

Zadeh,; Sawan,; Jalali,; Therriault,

doi:10.1109/camp.2007.4350348

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“…The technique introduced in this research is equally important for probing the spatial distribution of fluids in a digital microfluidic structure. The key design issue for the proposed system relates to the achievable spatial resolution, since the conductance state under investigation is inherently frequency-independent, and multi-frequency sampling algorithms for probing scales below the structural dimensions are not possible [5,25,[28][29][30][31]. With this in mind, a digital multiplexer structure [32][33][34] is investigated here.…”

Section: Introductionmentioning

confidence: 99%

In situ digital microfluidic conductance sampling

Nichols

Ahmadi

Hoorfar

et al. 2009

Sensors and Actuators A: Physical

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Section: Introductionmentioning

confidence: 99%

In situ digital microfluidic conductance sampling

Nichols

Ahmadi

Hoorfar

et al. 2009

Sensors and Actuators A: Physical

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Filling volume sensor for microfluidic applications based on thermic transient effect and standard PCB technology

Gross

Ender

Sántha

2010

33rd International Spring Seminar on Electronics Technology, ISSE 2010

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A liquid volume sensor has been developed on standard printed circuit board (PCB) technology, based on thermic transient effect. The sensor layer is built on 200 μm thick FR4 (Flame Retardant 4) substrate with 35 µm Cu coating, and the other walls of the fluidic chamber are made of Fullcure 720 rapid prototyping (RPT) photopolymer compound. The measurement process is based on a heated, meander-shaped Cu structure and it is controlled automatically by a microcontroller-based digital control unit. The filling volume is calculated from the gradient of the output voltage of the sensor and the applied heating power. A simple measurement system has been built to observe and to verify the preliminary thermic and electrical simulations of the sensor.

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CMOS-Based Capacitive Sensor Array Dedicated to Microfluidic Studies

Cited by 2 publications

References 1 publication

In situ digital microfluidic conductance sampling

In situ digital microfluidic conductance sampling

Filling volume sensor for microfluidic applications based on thermic transient effect and standard PCB technology

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