Repository logo

Infoscience

  • English
  • French
Log In
Logo EPFL, École polytechnique fédérale de Lausanne

Infoscience

  • English
  • French
Log In
  1. Home
  2. Academic and Research Output
  3. Journal articles
  4. Microfluidic Push-Pull Probe for Scanning Electrochemical Microscopy
 
research article

Microfluidic Push-Pull Probe for Scanning Electrochemical Microscopy

Momotenko, Dmitry  
•
Cortes-Salazar, Fernando  
•
Lesch, Andreas  
Show more
2011
Analytical Chemistry

This paper presents a microfluidic push-pull probe for scanning electrochemical microscopy (SECM) consisting of a working microelectrode, an integrated counter/reference electrode and two microchannels for pushing and pulling an electrolyte solution to and away from a substrate. With such a configuration, a droplet of a permanently renewed redox mediator solution is maintained just at the probe tip to carry out SECM measurements on initially dry substrates or in microenvironments. For SECM imaging purposes, the probe fabricated in a soft polymer material is used in a contact regime. SECM images of various gold-on-glass samples demonstrate the proof-of-concept of a push-pull probe for local surface activity characterization with high spatial resolution even on vertically oriented substrates. Finite element computations were performed to guide the improvement of the probe sensitivity.

  • Files
  • Details
  • Metrics
Loading...
Thumbnail Image
Name

ac2006729.pdf

Type

Publisher's Version

Version

http://purl.org/coar/version/c_970fb48d4fbd8a85

Access type

openaccess

Size

3.03 MB

Format

Adobe PDF

Checksum (MD5)

c8d17bd21feec254e71a6b6451d0b7db

Loading...
Thumbnail Image
Name

ac-2011-006729_0007.gif

Access type

openaccess

Size

69.41 KB

Format

GIF

Checksum (MD5)

caf875a08c32db724f8c343ffa87c3cc

Logo EPFL, École polytechnique fédérale de Lausanne
  • Contact
  • infoscience@epfl.ch

  • Follow us on Facebook
  • Follow us on Instagram
  • Follow us on LinkedIn
  • Follow us on X
  • Follow us on Youtube
AccessibilityLegal noticePrivacy policyCookie settingsEnd User AgreementGet helpFeedback

Infoscience is a service managed and provided by the Library and IT Services of EPFL. © EPFL, tous droits réservés