Electrostatic pull-in application in flexible devices: A review

• Teng Cai,
• Yuming Fang,
• Yingli Fang,
• Ruozhou Li,
• Ying Yu and
• Mingyang Huang

Beilstein J. Nanotechnol. 2022, 13, 390–403, doi:10.3762/bjnano.13.32

• . The voltage between the plates creates an electrostatic force that causes the upper plate to move down, and the spring provides a restoring force that prevents it from moving. When the applied voltage is lower than the pull-in voltage, the electrostatic force and mechanical recovery force on the upper

• functionality of nanostructures to process external stimuli applied to the device controlling the electrical current [12]. The lower pull-in voltage and the improved durability of the NEM switches require electrode materials with high Young’s modulus, conductivity, and Poisson's ratio. The flexible suspension

• increases the device density and can be used in nonvolatile high-density memory devices. The properties such as diameter, length, morphology, and structure of CNTs directly affect the pull-in voltage and repeatability. Bridge model: The typical structure of the bridge model is shown in Figure 2a. In 2006

Vibration analysis and pull-in instability behavior in a multiwalled piezoelectric nanosensor with fluid flow conveyance

• Sayyid H. Hashemi Kachapi

Beilstein J. Nanotechnol. 2020, 11, 1072–1081, doi:10.3762/bjnano.11.92

• Sayyid H. Hashemi Kachapi Department of Mechanical Engineering, Babol Noshirvani University of Technology, P.O. Box 484, Shariati Street, Babol, Mazandaran 47148-71167, Iran 10.3762/bjnano.11.92 Abstract In this work, surface/interface effects for pull-in voltage and viscous fluid velocity

• constants, residual stress, piezoelectric constants and mass density, are considered for analysis of the dimensionless natural frequency with respect to the viscous fluid velocity and pull-in voltage of the FC-MWPENSs. Keywords: electrostatic excitation; piezoelectric nanosensor; pull-in voltage; stability

• stress theory to investigate the effects of various fluid parameters on the pull-in voltage of carbon nanotubes conveying viscous fluid [15]. Also, the vibration analysis of viscoelastic double-walled carbon nanotubes (DWCNTs) combined with ZnO layers and subjected to magnetic and electric fields were

Review: Electrostatically actuated nanobeam-based nanoelectromechanical switches – materials solutions and operational conditions

• Liga Jasulaneca,
• Jelena Kosmaca,
• Raimonds Meija,
• Jana Andzane and
• Donats Erts

Beilstein J. Nanotechnol. 2018, 9, 271–300, doi:10.3762/bjnano.9.29

• fabrication in addition to such benefits as high stiffness (Young’s modulus 447 GPa), hardness (5 GPa), and high melting point (2333 °C [116]). Ru-based NEM relays with small gap widths have shown an even smaller coupling area than that of Cu-based devices, with a pull-in voltage of 5 V [18], together with

Size-dependent characteristics of electrostatically actuated fluid-conveying carbon nanotubes based on modified couple stress theory

• Mir Masoud Seyyed Fakhrabadi,
• Abbas Rastgoo and
• Mohammad Taghi Ahmadian

Beilstein J. Nanotechnol. 2013, 4, 771–780, doi:10.3762/bjnano.4.88

• the pull-in voltage and is to be discussed in detail in the following sections. In another paper, Dequesnes et al. [15] studied the static pull-in behaviors of the CNTs as well as their natural frequencies under electrostatic actuation, and the vdW interactions and compared some of the results with

• interatomic forces. Then, the CNT suddenly drops on the ground plate. This phenomenon is called pull-in instability and the corresponding voltage is the pull-in voltage. If the behavior is static, the pull-in will be static. In the case of dynamic motion, the pull-in will be a dynamic pull-in. Details are to

• the effects of fluid flow on the cantilevered CNTs are remarkably stronger than those on the doubly clamped CNTs. The fluid flow increases the static pull-in voltage of the cantilever CNTs by increasing the stiffness of the system, whereas for the CNTs with doubly clamped boundary conditions the