The electrolysis of water: an actuation principle for MEMS with a big opportunity

Neagu, C.R.; Jansen, Henricus V.; Gardeniers, Han; Elwenspoek, M.

doi:10.1016/s0957-4158(99)00066-5

Cited by 68 publications

(33 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To replenish the gas layer lost upon wetting, electrolysis was deemed better suited than other gas-generation methods such as thermal, pneumatic, and chemical on account of its low power consumption [20], the stability of the generated gases [21], its easy integration into a system, and its compatibility with water. In this study, we used a line pattern of thin-film gold on the bottom surface as the cathode (Fig.…”

Section: University Of California Los Angeles (Ucla) California 900mentioning

confidence: 99%

Underwater Restoration and Retention of Gases on Superhydrophobic Surfaces for Drag Reduction

2011

View full text Add to dashboard Cite

Section: University Of California Los Angeles (Ucla) California 900mentioning

confidence: 99%

Underwater Restoration and Retention of Gases on Superhydrophobic Surfaces for Drag Reduction

2011

View full text Add to dashboard Cite

“…Of course, this value is sensitive to temperature and pressure effects [11]. Thorough investigation of the exact cause of the increase in CO-tolerance due to negative pulses and its reactions in the anode channel should be done in the future.…”

Section: Discussionmentioning

confidence: 99%

CO-tolerant operation of platinum-loaded PEM fuel cells

Wingelaar

Geers

Duarte

et al. 2007

2007 IEEE International Symposium on Industrial Electronics

View full text Add to dashboard Cite

Abstract-Biomass is a green energy source, which can be converted to hydrogen rich gas. If this gas is used as feedstock for a PEM fuel cell, it is possible to convert biomass to electricity in an environmental friendly way. A disadvantage of a PEM fuel cell is that platinum, which is used as catalyst to speed up the anode reaction, is a good adsorbent for CO. Carbon monoxide will adhere to the platinum surface blocking the catalyst for hydrogen oxidation. In order to clean the catalyst, oxygen can be added to the fuel stream. By applying negative voltage pulses to the cell terminals, existing water can get electrolyzed. This results in trace amounts of oxygen in the anode channel.Measurements performed on a poisoned fuel cell stack have been conducted. The results of the measurements show that the poisoned cells regenerate after a negative pulse. By optimizing the pulse amplitude, repetition time and duty cycle, the fuel cell used is CO-tolerant for gasses containing 50 ppm CO. Furthermore, cell oscillations, probably related to self-oxidation of carbon monoxide, are observed, which is remarkable for PEM fuel cells with pure platinum loaded catalysts.

show abstract

“…With COC, a smaller amount was lost, resulting in a higher pumping efficiency. Moreover, because heat dissipation with COC is less than with a silicon substrate and the vapor pressure increases exponentially with temperature (Neagu et al 2000), the slightly elevated temperature in the reservoirs could help high pumping efficiency. To verify dependency Fig.…”

Section: Electrochemical Pumpingmentioning

confidence: 99%

“…If all of the applied electrical power is converted into the power used in electrolysis, the flow rate will be proportional to the applied current. However, there are many factors that should be considered in electrolysis e.g., recombination of the oxygen and hydrogen, gas permeation to the microfluidic device layers, joule heating and absorption of generated gas by liquid (Neagu et al 1996(Neagu et al , 1997(Neagu et al , 2000. Because all of these factors cannot be easily calculated and fit into the theory, it is useful to calculate efficiency of the pump at each applied current value.…”

Section: Electrochemical Pumpingmentioning

confidence: 99%

On-chip coupling of electrochemical pumps and an SU-8 tip for electrospray ionization mass spectrometry

Park

Lee

Craighead

2008

Biomed Microdevices

View full text Add to dashboard Cite

We present the integration of a cyclo olefin copolymer microfluidic chip with electrochemical pumps and an SU-8 tip for electrospray ionization mass spectrometry. The electrochemical pump, using electrolysis as an internal pressure source, was fabricated directly on the surface of the polymer chip. The triangular SU-8 emitter tip was fabricated on a glass wafer using standard photolithography. After release from the glass wafer, this tip was aligned to the microchannel and bonded between two polymer plates. The electrochemical pump and the electrospray tip were tested with electrospray ionization mass spectrometry. Mass spectrometry confirmed the stability of the electrochemical pump and the electrospray tip.

show abstract

The electrolysis of water: an actuation principle for MEMS with a big opportunity

Cited by 68 publications

References 4 publications

Underwater Restoration and Retention of Gases on Superhydrophobic Surfaces for Drag Reduction

Underwater Restoration and Retention of Gases on Superhydrophobic Surfaces for Drag Reduction

CO-tolerant operation of platinum-loaded PEM fuel cells

On-chip coupling of electrochemical pumps and an SU-8 tip for electrospray ionization mass spectrometry

Contact Info

Product

Resources

About