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Non-contact non-resonant atomic force microscopy method for measurements of highly mobile molecules and nanoparticles

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F23%3A00367156" target="_blank" >RIV/68407700:21230/23:00367156 - isvavai.cz</a>

  • Result on the web

    <a href="https://doi.org/10.1016/j.ultramic.2023.113816" target="_blank" >https://doi.org/10.1016/j.ultramic.2023.113816</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1016/j.ultramic.2023.113816" target="_blank" >10.1016/j.ultramic.2023.113816</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Non-contact non-resonant atomic force microscopy method for measurements of highly mobile molecules and nanoparticles

  • Original language description

    Atomic force microscopy (AFM) is nowadays indispensable versatile scanning probe method widely employed for fundamental and applied research in physics, chemistry, biology as well as industrial metrology. Conventional AFM systems can operate in various environments such as ultra-high vacuum, electrolyte solutions, or controlled gas atmosphere. Measurements in ambient air are prevalent due to their technical simplicity; however, there are drawbacks such as formation of water meniscus that greatly increases attractive interaction (adhesion) between the tip and the sample, reduced spatial resolution, and too strong interactions leading to tip and/or sample modifications. Here we show how the attractive forces in AFM under ambient conditions can be used with advantage to probe surface properties in a very sensitive way even on highly mobile molecules and nanoparticles. We introduce a stable non-contact non-resonant (NCNR) AFM method which enables to reliably perform measurements in the attractive force regime even in air by controlling the tip position in the intimate surface vicinity without touching it. We demonstrate proof-of-concept results on helicene-based macrocycles, DNA on mica, and nanodiamonds on SiO2. We compare the results with other conventional AFM regimes, showing NCNR advantages such as higher spatial resolution, reduced tip contamination, and negligible sample modification. We analyze principle physical and chemical mechanisms influencing the measurements, discuss issues of stability and various possible method implementations. We explain how the NCNR method can be applied in any AFM system by a mere software modification. The method thus opens a new research field for measurements of highly sensitive and mobile nanoscale objects under air and other environments.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    21002 - Nano-processes (applications on nano-scale); (biomaterials to be 2.9)

Result continuities

  • Project

    <a href="/en/project/EF16_019%2F0000778" target="_blank" >EF16_019/0000778: Center for advanced applied science</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2023

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Ultramicroscopy

  • ISSN

    0304-3991

  • e-ISSN

    1879-2723

  • Volume of the periodical

    253

  • Issue of the periodical within the volume

    113816

  • Country of publishing house

    NL - THE KINGDOM OF THE NETHERLANDS

  • Number of pages

    12

  • Pages from-to

  • UT code for WoS article

    001052384600001

  • EID of the result in the Scopus database

    2-s2.0-85166349640