Determination of the radii of coated and uncoated silicon AFM sharp tips using a height calibration standard grating and a nonlinear regression function

• Perawat Boonpuek and
• Jonathan R. Felts

Beilstein J. Nanotechnol. 2023, 14, 1200–1207, doi:10.3762/bjnano.14.99

• nanostructured materials, for example, graphene, carbon nanotubes, nanoscale semiconductors, biomaterials, and molecules. Mechanical properties such as surface stiffness, adhesion, friction, electrostatics, and electrowetting can be measured [1][2][3][4]. In contact mode scanning, the contact area between the

Novel reversibly switchable wettability of superhydrophobic–superhydrophilic surfaces induced by charge injection and heating

• Xiangdong Ye,
• Junwen Hou and
• Dongbao Cai

Beilstein J. Nanotechnol. 2019, 10, 840–847, doi:10.3762/bjnano.10.84

• superhydrophobicity and superhydrophilicity has attracted widespread interest because of its important applications. In this work, we propose a reversible superhydrophobic–superhydrophilic conversion induced by charge injection and heating. Different from the conventional electrowetting phenomenon caused by the

• termed electrowetting [19]. The equilibrium morphology under electrical wetting conditions is determined by the equilibrium of Maxwell stress and Laplace pressure [20][21]. Verplanck et al. [22] reported the reversible electrical wetting of droplets on superhydrophobic silicon nanowires in air and oil

• by an electrochemical process. The surface wettability could be controlled from superhydrophobic to superhydrophilic. When the sample was dried at room temperature or heated at 100 °C, the wettability could be reversed. Compared with the electrowetting phenomenon caused by electric-field-driven solid

Nanoscale mapping of dielectric properties based on surface adhesion force measurements

• Ying Wang,
• Yue Shen,
• Xingya Wang,
• Zhiwei Shen,
• Bin Li,
• Jun Hu and
• Yi Zhang

Beilstein J. Nanotechnol. 2018, 9, 900–906, doi:10.3762/bjnano.9.84

• achieved with high lateral resolution by combining the advantages of the electrowetting (EW) effect [33] and an AFM imaging mode, PeakForce Quantitative Nano-Mechanics (PF-QNM) [34]. Electrowetting is a phenomenon in which the wetting properties of a dielectric surface are modified using an external

The study of surface wetting, nanobubbles and boundary slip with an applied voltage: A review

• Yunlu Pan,
• Bharat Bhushan and
• Xuezeng Zhao

Beilstein J. Nanotechnol. 2014, 5, 1042–1065, doi:10.3762/bjnano.5.117

• slip; electrowetting; nanobubbles; surface charge; Introduction The interface of solid and liquid plays an important role in liquid flow in various fluidics based micro/nano-electro-mechanical systems (MEMS/NEMS), which have a large surface area to volume ratio [1][2]. At the interface of solid and

• liquid, surface wetting, surface charge, nanobubbles and boundary slip are believed to affect the drag of liquid flow [3][4][5][6][7][8][9][10]. By applying a voltage to the system, the surface wettability can be changed, known as electrowetting, and the surface charge density can be changed as well [11

• so called electrowetting [10][11][64][65]. The surface tension between solid and liquid decreases with increasing applied voltage, leading to a decrease of the CA. The change of the CA with the applied voltage V can be expressed by the Young–Lippmann equation [64][66] as: where θ0 is the original CA

Sorting of droplets by migration on structured surfaces

• Wilfried Konrad and
• Anita Roth-Nebelsick

Beilstein J. Nanotechnol. 2011, 2, 215–221, doi:10.3762/bjnano.2.25

• droplets of reactants without contamination. Single droplet movement can be achieved with different techniques, such as thermal Marangoni flow, electrowetting and vibration techniques [1]. Specifically designed surfaces can lead to spontaneous droplet movement, even uphill [3]. It is well known [1][4][5][6