True atomic-scale imaging of a spinel Li4Ti5O12(111) surface in aqueous solution by frequency-modulation atomic force microscopy

2014 ◽  
Vol 105 (11) ◽  
pp. 111606 ◽  
Author(s):  
Mitsunori Kitta ◽  
Masanori Kohyama ◽  
Hiroshi Onishi
Keyword(s):  
Aqueous Solution ◽  
Atomic Force Microscopy ◽  
Frequency Modulation ◽  
Atomic Scale ◽  
Force Microscopy ◽  
Atomic Force

Aqueous Solution Structure over α-Al2O3(011̅2) Probed by Frequency-Modulation Atomic Force Microscopy

2010 ◽  
Vol 114 (49) ◽  
pp. 21423-21426 ◽  
Author(s):  
Takumi Hiasa ◽  
Kenjiro Kimura ◽  
Hiroshi Onishi ◽  
Masahiro Ohta ◽  
Kazuyuki Watanabe ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Atomic Force Microscopy ◽  
Frequency Modulation ◽  
Solution Structure ◽  
Force Microscopy ◽  
Atomic Force ◽  
Α Al2o3

Atomic-Scale Imaging of Surface and Hydration Structures of Stable and Metastable Acetaminophen Crystals by Frequency Modulation Atomic Force Microscopy

2018 ◽  
Vol 122 (38) ◽  
pp. 21983-21990
Author(s):  
Naritaka Kobayashi ◽  
Mihoko Maruyama ◽  
Yoichiro Mori ◽  
Suguru Fukukita ◽  
Hiroaki Adachi ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Frequency Modulation ◽  
Atomic Scale ◽  
Force Microscopy ◽  
Atomic Force

INVITED PAPER: Instrumentation and Biological Applications of High-Resolution Frequency Modulation Atomic Force Microscopy in Liquid

2009 ◽  
Vol 4 ◽  
pp. 1-10 ◽  
Author(s):  
Takeshi Fukuma
Keyword(s):  
Atomic Force Microscopy ◽  
Frequency Modulation ◽  
Recent Progress ◽  
Imaging Techniques ◽  
Alkali Halides ◽  
Atomic Scale ◽  
Biological Applications ◽  
Force Microscopy ◽  
Organic Systems ◽  
Atomic Force

Frequency modulation atomic force microscopy (FM-AFM) has been a powerful tool for imaging atomic-scale structures and properties of various materials including metals, semiconductors, metal oxides, alkali halides and organic systems. Whilst the method has been used mainly in ultrahigh vacuum environments, recent progress in FM-AFM instrumentation made it possible to apply this technique also to investigations in liquid. This technological innovation opened up a variety of applications of FM-AFM in biology and electrochemistry. To date, the improved FM-AFM instrument and technique have been applied to investigations of several biological materials, providing novel information that has not been accessible with other imaging techniques. In this review, I will summarize the recent progress in FM-AFM instrumentation and biological applications in liquid.

Improvements in fundamental performance of in-liquid frequency modulation atomic force microscopy

Microscopy ◽  
2020 ◽  
Vol 69 (6) ◽  
pp. 340-349
Author(s):  
Takeshi Fukuma
Keyword(s):  
Atomic Force Microscopy ◽  
Frequency Modulation ◽  
Three Dimensional ◽  
Atomic Scale ◽  
Atomic Resolution ◽  
Scanning Method ◽  
Force Microscopy ◽  
Atomic Force ◽  
Hydration Structure ◽  
Force Resolution

Abstract In-liquid frequency modulation atomic force microscopy (FM-AFM) has been used for visualizing subnanometer-scale surface structures of minerals, organic thin films and biological systems. In addition, three-dimensional atomic force microscopy (3D-AFM) has been developed by combining it with a three-dimensional (3D) tip scanning method. This method enabled the visualization of 3D distributions of water (i.e. hydration structures) and flexible molecular chains at subnanometer-scale resolution. While these applications highlighted the unique capabilities of FM-AFM, its force resolution, speed and stability are not necessarily at a satisfactory level for practical applications. Recently, there have been significant advancements in these fundamental performances. The force resolution was dramatically improved by using a small cantilever, which enabled the imaging of a 3D hydration structure even in pure water and made it possible to directly compare experimental results with simulated ones. In addition, the improved force resolution allowed the enhancement of imaging speed without compromising spatial resolution. To achieve this goal, efforts have been made for improving bandwidth, resonance frequency and/or latency of various components, including a high-speed phase-locked loop (PLL) circuit. With these improvements, now atomic-resolution in-liquid FM-AFM imaging can be performed at ∼1 s/frame. Furthermore, a Si-coating method was found to improve stability and reproducibility of atomic-resolution imaging owing to formation of a stable hydration structure on a tip apex. These improvements have opened up new possibilities of atomic-scale studies on solid-liquid interfacial phenomena by in-liquid FM-AFM.

scholarly journals True Atomic-Resolution Imaging of (101̅4) Calcite in Aqueous Solution by Frequency Modulation Atomic Force Microscopy

Langmuir ◽  
2009 ◽  
Vol 25 (5) ◽  
pp. 2850-2853 ◽  
Author(s):  
Sebastian Rode ◽  
Noriaki Oyabu ◽  
Kei Kobayashi ◽  
Hirofumi Yamada ◽  
Angelika Kühnle
Keyword(s):  
Aqueous Solution ◽  
Atomic Force Microscopy ◽  
Frequency Modulation ◽  
Atomic Resolution ◽  
Force Microscopy ◽  
Atomic Force ◽  
Resolution Imaging
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