Xurography for 2D and multi-level glucose/O2 microfluidic biofuel cell

Renaud, Louis; Selloum, Djamel; Tingry, Sophie

doi:10.1007/s10404-014-1539-z

Cited by 37 publications

(25 citation statements)

References 45 publications

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“…A possible solution to this issue consists of using a "xurography" technique for the fabrication of microfluidic circuits [40], by cutting out the microfluidic patterns and combining them with successive layers of materials to create the circuit. It has the advantage of being very inexpensive and requiring few technological resources (clean room, mold, etc.).…”

Section: Love Wave Sensor Microfluidic Circuitmentioning

confidence: 99%

Mobile Acoustic Wave Platform Deployment in the Amazon River: Impact of the Water Sample on the Love Wave Sensor Response

Tamarin

Rube

Lachaud

et al. 2019

Sensors

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This paper presents an experimental platform allowing in situ measurement in an aqueous medium using an acoustic Love wave sensor. The aim of this platform, which includes the sensor, a test cell for electrical connections, a microfluidic chip, and a readout electronic circuit, is to realize a first estimation of water quality without transportation of water samples from the field to the laboratory as a medium-term objective. In the first step, to validate the ability of such a platform to operate in the field and in Amazonian water, an isolated and difficult-to-access location, namely, the floodplain Logo Do Curuaï in the Brazilian Amazon, was chosen. The ability of such a platform to be transported, installed on site, and used is discussed in terms of user friendliness and versatility. The response of the Love wave sensor to in situ water samples is estimated according to the physical parameters of Amazonian water. Finally, the very good quality of the acoustic response is established, potential further improvements are discussed, and the paper is concluded.The other method is based on the collection of in situ samples with conditioning methods that require not only the transport of the samples from the field to analytical laboratories but also the analysis of these same samples by highly qualified personnel using analytical chemistry tools that are sometimes very expensive, such as gas chromatographs, mass spectrometers, and electrophoretic stations.Drawbacks include the biochemical degradation of the samples during their collection and transportation [6]. Moreover, this method does not allow an exhaustive analysis of the biochemical compounds in the water column over a large area of investigation. Indeed, the logistics of deployment and the overall cost, including consumables and the workforce, result in a very low frequency of in-field sample collection and necessitate complex work to evaluate a large number of samples that nevertheless cannot be efficiently treated in terms of time compared to the surfaces to be studied. This drawback is not compatible with the need for water quality data over a large area [7].An intermediate approach, allowing the coverage of a high surface area while analyzing biochemical compounds in the water column, is to use in situ biochemical sensors that are easily deployable. If one sensor can provide information about the presence of a target compound, certain properties are important for covering a large area with a minimum cost, such as good sensitivity, easy communicating, low cost, user friendliness, and low power consumption or even passive power operation. These properties leverage autonomous sensor networks to cover a large area and/or to allow the use of nonexpert people to realize rapid in situ testing of water quality.As a response to this issue, we propose to use acoustic transduction based on a surface acoustic wave (SAW) filter with the ultimate goal to realize biochemical detection in the field. SAW sensors are a good candidate to supply all the needed properties fo...

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Section: Love Wave Sensor Microfluidic Circuitmentioning

confidence: 99%

Mobile Acoustic Wave Platform Deployment in the Amazon River: Impact of the Water Sample on the Love Wave Sensor Response

Tamarin

Rube

Lachaud

et al. 2019

Sensors

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“…Finally, the mask is removed leaving the conductive layer printed in the substrate. This technique is especially useful for electrodes and microchannels [38] (see Figure 2). Micromolding and hot embossing are similar techniques.…”

Section: Microfabrication Techniquesmentioning

confidence: 99%

Microfluidics in Membraneless Fuel Cells

Díaz-Real¹,

Guerra‒Balcázar²,

Arjona³

et al. 2016

Advances in Microfluidics - New Applications in Biology, Energy, and Materials Sciences

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In the 1990s, the idea of developing miniaturized devices that integrate functions other than what normally are carried out at the laboratory level was conceived, and the socalled "lab-on-a-chip" (LOC) devices emerged as one of the most important research areas. LOC devices exhibit advantages related to the use of microfluidic channels such as small sample and reagent consumption, portability, low-power consumption, laminar flow, and higher surface area/volume ratio that enhances both thermal dissipation and electrochemical kinetics. Fuel cells are electrochemical devices that convert chemical energy to electrical energy. These are considered as one of the greener ways to generate electricity because typical fuel cells produce water and heat as the main reaction byproducts. The technical challenges to develop systems at the microscale and the advantages of microfluidics exhibited an important impact on fuel cells for several reasons, mainly related to avoid inherent problems of gaseous-based fuel cells. As a result, the birth of a new type of fuel cells as microfluidic fuel cells (MFCs) took place. The first microfluidic fuel cell was reported in 2002. This MFC was operated with liquid fuel/oxidant and had the advantage of the low laminar flow generated using a "Y" microfluidic channel to separate the anodic and cathodic streams, resulting in an energy conversion device that did not require a physical barrier to separate both streams. This electrochemical system originated a specific type of MFCs categorized as membraneless also called colaminar microfluidic fuel cells. Since that year, numerous works focused on the nature of fuels, oxidants and anodic/cathodic electrocatalysts, and cell designs have been reported. The limiting parameters of this kind of devices toward their use in portable applications are related to their low cell performances, small mass activity, and partial selectivity/durability of electrocatalysts. On the other hand, it has been observed that the cell design has a high effect on the cell performance due to internal cell resistances and the crossover effect. Furthermore, current technology is growing faster than last centuries and new microfabrication technologies are always emerging, allowing the development of smaller and more powerful microfluidic energy devices. In this chapter, the application of microfluidics in membraneless fuel cells is addressed in terms of evolution of cell designs of miniaturized microfluidic fuel cells as a result of new discoveries in microfabrication technology and the use of several fuels and electrocatalysts for specific and selective applications.

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“…Cell stack has also been proposed as a way to increase power output, in which cell arrays were connected in series with fluidic electrolytes. [22][23][24][25][26] However, it required a more complicated system design for liquid flow and distribution control. The scale-up of MFC in a volumetrically efficient manner remains a challenge.…”

Section: Introductionmentioning

confidence: 99%

Scaling Up Microfluidic Aluminum-Air Cell with Electrochemical Impedance Spectroscopy (EIS) Assisted Performance Analysis

Chen

Leung

Wang

et al. 2016

J. Electrochem. Soc.

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Microfluidic fuel cell is a promising power source in many applications, such as portable electronic devices. In this work, a novel and unique scale-up approach is developed to increase the capability of the microfluidic aluminum-air fuel cell, while maintaining the co-laminar flow characteristic at the same time. In the scaled-up cell, the crossover of different electrolyte streams was well controlled and a higher cell output was achieved. With a four-fold increase in the electrode area, the maximum current density could be maintained over 75%. Impedance spectroscopy study on full aluminum-air cells was conducted for the first time, and employed to analyze the cell properties during their scaling up process.

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Xurography for 2D and multi-level glucose/O2 microfluidic biofuel cell

Cited by 37 publications

References 45 publications

Mobile Acoustic Wave Platform Deployment in the Amazon River: Impact of the Water Sample on the Love Wave Sensor Response

Mobile Acoustic Wave Platform Deployment in the Amazon River: Impact of the Water Sample on the Love Wave Sensor Response

Microfluidics in Membraneless Fuel Cells

Scaling Up Microfluidic Aluminum-Air Cell with Electrochemical Impedance Spectroscopy (EIS) Assisted Performance Analysis

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