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Chapitre D'ouvrage Année : 2022

HYBRID SCANNING ELECTROCHEMICAL TECHNIQUES: METHODS AND APPLICATIONS

Christine Kranz
  • Fonction : Auteur

Résumé

Since the second edition of the book, significant progress has been made in all aspects of hybrid scanning electrochemical probe microscopy (SEPM) combining scanning electrochemical microscopy (SECM) with techniques such as atomic force microscopy (AFM), scanning tunneling microscopy (STM), shear force (SF) and scanning ion conductance microscopy (SICM.) Given the ease of nanopipette fabrication, nanopipette-based hybrid SPM techniques have gained significant attention such that they will now be covered in a separate chapter. One of the driving forces behind the hybrid SECM techniques is the precise knowledge of the tip-substrate separation, which is essential to extract quantitative information on surface processes. This is particularly a critical aspect if improved spatial resolution down to the nanometer regime is targeted, which requires nano-sized electrodes positioned with several electrode radii precision at the sample surface. To perform imaging experiments with nano-sized electrodes, distance-controlled positioning of the SECM tip using an electric feedback loop is highly recommended. For example, for real-world samples with surface morphology on the order of the radii of the electroactive area at SECM tips, fixed height imaging invariably may result in erroneous data or tip crash. However, the developments are also driven by addressing more complex problems which requires that several sample-characteristic parameters (e.g., nanomechanical properties, spectroscopic and optical properties) are recorded simultaneously without the need of sequential mapping. With the update of this chapter, the combination of SECM with techniques such as AFM, STM, SF but also complementary techniques including fluorescence, confocal laser scanning microscopy (CLSM), surface plasmon resonance (SPR) and attenuated total reflection (ATR) infrared (IR) measurements will be covered, providing selected highlighted applications of these hybrid methods.
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Dates et versions

hal-03818891 , version 1 (24-10-2022)

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  • HAL Id : hal-03818891 , version 1

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Christine Kranz, Christophe Demaille. HYBRID SCANNING ELECTROCHEMICAL TECHNIQUES: METHODS AND APPLICATIONS. Scanning Electrochemical Microscopy 3rd edition, 2022, 9781003004592. ⟨hal-03818891⟩
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