2D-materials-integrated optoelectromechanics: recent progress and future perspectives

Abstract

The discovery of two-dimensional (2D) materials has gained worldwide attention owing to their extraordinary optical, electrical, and mechanical properties. Due to their atomic layer thicknesses, the emerging 2D materials have great advantages of enhanced interaction strength, broad operating bandwidth, and ultralow power consumption for optoelectromechanical coupling. The van der Waals (vdW) epitaxy or multidimensional integration of 2D material family provides a promising platform for on-chip advanced nano-optoelectromechanical systems (NOEMS). Here, we provide a comprehensive review on the nanomechanical properties of 2D materials and the recent advances of 2D-materials-integrated nano-electromechanical systems (NEMS) and nano-optomechanical systems (NOMS). By utilizing active nanophotonics and optoelectronics as the interface, 2D active NOEMS and their coupling effects are particularly highlighted at the 2D atomic scale. Finally, we share our viewpoints on the future perspectives and key challenges of scalable 2D-materials-integrated active NOEMS for on-chip miniaturized, lightweight, and multifunctional integration applications.

Polarity reversal and strain modulation of Janus MoSSe/GaN polar semiconductor heterostructures

“…As a result, polarity manipulation can act as an effective strategy in optimizing device performances and enriching multifunctional applications, including electronics, optoelectronics, photocatalysis, 13 batteries, 14,15 and nanoelectromechanical systems. 16 As derivatives of the 2D material family, Janus 2D materials have attracted great attention in recent years. In 2013, Cheng et al 17 proposed several 2D Janus TMDs for the first time.…”

“…As a result, polarity manipulation can act as an effective strategy in optimizing device performances and enriching multifunctional applications, including electronics, optoelectronics, photocatalysis, 13 batteries, 14,15 and nanoelectromechanical systems. 16…”

The deep-acceptor nature of the chalcogen vacancies in 2D transition-metal dichalcogenides

“…Layered transition-metal dichalcogenides (TMDs) with formula unit MX 2 (where M is a transitionmetal, and X represents a chalcogen atom) are of technological interest due to their unique mechanical [1,2], electrical [3,4], and optical properties [5,6]. They have been studied for a variety of applications, including optoelectronics [3,4], sensors [6], field-effect transistors [3], heterostructure junctions [7], photovoltaics [8], photodetectors [9], and singlephoton emitters [10,11].…”

Acoustic Resonance Tuning by High-Order Lorentzian Mixing

“…To change the properties of mechanical oscillators, changes in physical parameters such as stiffness, surface stress, and dimensions are required but challenging since those are fixed at a choice of materials and geometries, so postlithographic trimmings are typically required. , On the other hand, there are some strategies to allow active control such as stiffness, , surface stress, thermal effects, , and acoustic nonlinear effects. , Such mechanical parameter modulations can be demonstrated using piezoelectric materials. Also, recently low-dimensional materials show great tunability . However, these methods limit the choice of materials such as piezoelectric and 2D materials, so those are not suitable for wide applications.…”