2010
DOI: 10.1039/c0ay00096e
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Fountain pen for scanning electrochemical microscopy

Abstract: A fountain pen probe has been developed to extend the scope of scanning electrochemical microscopy (SECM) experiments to dry surfaces. The fountain pen is fabricated by UV-photoablation of a polyethylene terephthalate (PET) film and consists on one side of one microchannel for flowing an electrolyte solution to the open tip, integrating a reference/counter electrode and on the other side a carbon track. The exposed tip of the track forms the working electrode located close to the microchannel outlet. The fount… Show more

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Cited by 34 publications
(43 citation statements)
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“…A further enhancement is the use of arrays of these probes to reduce the experimental timescale (28). By inserting a microfluidic channel, with an integrated counter/reference electrode, into this type of probe, investigators have fabricated a fountain pen--like probe to allow the characterization of dry surfaces (30). Although it is an interesting innovation within scanning droplet-based techniques, this system is designed to have a large footprint to study extended areas of a sample.…”
Section: Introductionmentioning
confidence: 99%
“…A further enhancement is the use of arrays of these probes to reduce the experimental timescale (28). By inserting a microfluidic channel, with an integrated counter/reference electrode, into this type of probe, investigators have fabricated a fountain pen--like probe to allow the characterization of dry surfaces (30). Although it is an interesting innovation within scanning droplet-based techniques, this system is designed to have a large footprint to study extended areas of a sample.…”
Section: Introductionmentioning
confidence: 99%
“…No efforts were made in order to define the degree or direction of such bending. However, as reported previously a lift-off routine included in SECMx software was employed for SECM imaging in contact mode [64]. Briefly, during the forward scan the probe is hold at the same vertical positioning value in which a physical contact with the sample substrate is established.…”
Section: Secm Experimentsmentioning
confidence: 99%
“…[19][20][21] The new probes are made by classical microfabrication techniques and are appropriate for a wide range of samples, thereby broadening the applicability of SECM to new areas.…”
Section: Featurementioning
confidence: 99%
“…45 More recently, a fountain pen probe for SECM that integrates a microfluidic system with a two-electrode cell has been proposed. 20 The fountain pen is made by the same microfabrication technology as the soft stylus probes described above 19 but introduces a microfluidic channel and a counter/reference electrode prepared by ablating a parallel and aligned second microchannel on the opposite side of the carbon track used as working electrode. For surface reactivity characterization, the fountain pen is used in the contact regime similar to the soft stylus probe.…”
Section: ' Fountain Pen Probe To Image Dry Surfacesmentioning
confidence: 99%