Phase modulation atomic force microscopy in constant excitation mode capable of simultaneous imaging of topography and energy dissipation

2008 ◽  
Vol 92 (12) ◽  
pp. 121903 ◽  
Author(s):  
Yan Jun Li ◽  
Naritaka Kobayashi ◽  
Yoshitaka Naitoh ◽  
Masami Kageshima ◽  
Yasuhiro Sugawara
2020 ◽  
Author(s):  
Mitsunori Kitta

This manuscript propose the operando detection technique of the physical properties change of electrolyte during Li-metal battery operation.The physical properties of electrolyte solution such as viscosity (η) and mass densities (ρ) highly affect the feature of electrochemical Li-metal deposition on the Li-metal electrode surface. Therefore, the operando technique for detection these properties change near the electrode surface is highly needed to investigate the true reaction of Li-metal electrode. Here, this study proved that one of the atomic force microscopy based analysis, energy dissipation analysis of cantilever during force curve motion, was really promising for the direct investigation of that. The solution drag of electrolyte, which is controlled by the physical properties, is directly concern the energy dissipation of cantilever motion. In the experiment, increasing the energy dissipation was really observed during the Li-metal dissolution (discharge) reaction, understanding as the increment of η and ρ of electrolyte via increasing of Li-ion concentration. Further, the dissipation energy change was well synchronized to the charge-discharge reaction of Li-metal electrode.This study is the first report for direct observation of the physical properties change of electrolyte on Li-metal electrode reaction, and proposed technique should be widely interesting to the basic interfacial electrochemistry, fundamental researches of solid-liquid interface, as well as the battery researches.


Friction ◽  
2021 ◽  
Author(s):  
Xinfeng Tan ◽  
Dan Guo ◽  
Jianbin Luo

AbstractDynamic friction occurs not only between two contact objects sliding against each other, but also between two relative sliding surfaces several nanometres apart. Many emerging micro- and nano-mechanical systems that promise new applications in sensors or information technology may suffer or benefit from noncontact friction. Herein we demonstrate the distance-dependent friction energy dissipation between the tip and the heterogeneous polymers by the bimodal atomic force microscopy (AFM) method driving the second order flexural and the first order torsional vibration simultaneously. The pull-in problem caused by the attractive force is avoided, and the friction dissipation can be imaged near the surface. The friction dissipation coefficient concept is proposed and three different contact states are determined from phase and energy dissipation curves. Image contrast is enhanced in the intermediate setpoint region. The work offers an effective method for directly detecting the friction dissipation and high resolution images, which overcomes the disadvantages of existing methods such as contact mode AFM or other contact friction and wear measuring instruments.


2004 ◽  
Vol 43 (No. 12A) ◽  
pp. L1510-L1513 ◽  
Author(s):  
Masami Kageshima ◽  
Seiji Takeda ◽  
Arkadiusz Ptak ◽  
Chikashi Nakamura ◽  
Suzanne P. Jarvis ◽  
...  

1999 ◽  
Vol 140 (3-4) ◽  
pp. 376-382 ◽  
Author(s):  
B. Anczykowski ◽  
B. Gotsmann ◽  
H. Fuchs ◽  
J.P. Cleveland ◽  
V.B. Elings

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