Percolation threshold and effective properties of CNTs-reinforced two-phase composite materials

Barium titanate (BaTiO 3 ) is renowned for its high dielectric constant and remarkable piezoelectric attributes, positioning it as a key element in the advancement of environmentally sustainable devices. Nevertheless, the effectiveness of piezoelectric nanogenerators (PENGs) that integrate BaTiO 3 nanoparticles (NPs) and poly(dimethylsiloxane) (PDMS) poses a challenge, thereby restricting their utility in energy harvesting applications. This study presents a direct approach involving the cyclic manipulation of direct current (DC) power supply terminals to achieve unidirectional alignment of BaTiO 3 NPs within a PDMS matrix, aiming to enhance the performance of the PENGs. Examination of the morphology and evaluation of diffraction planes, notably ( 111) and ( 200), in the aligned BaTiO 3 PENGs exhibited well-oriented structures resulting from the repetitive switching between two electrodes, leading to improved piezoelectric properties. The BaTiO 3 PENGs manifested notably higher output power (∼15 V and 1.91 μA) in contrast to devices containing randomly distributed polarized BaTiO 3 −PDMS composite films. The generated power was sufficient to directly operate six light-emitting diodes (LEDs) connected in series, with a collective nominal voltage of around 14 V, encompassing red, green, and blue LEDs. Nanoindentation verified the enhanced piezoelectric characteristics attributed to the alignment, sensitivity to bending, and energy-cohesive effects of clustered BaTiO 3 one-dimensional (1D) pillars. These findings suggest a widely applicable technique for aligning and situating nanoparticles vertically within a polymer matrix, exploiting the intrinsic dielectric properties of the nanoparticles through a straightforward electric field switching mechanism.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Percolation threshold and effective properties of CNTs-reinforced two-phase composite materials

Cited by 5 publications

References 36 publications

Fabrication and Characterization of Carbon Nanotubes-Based Pressure Nanosensors: A Study on Piezoresistive Behavior

Fabrication and Characterization of Carbon Nanotubes-Based Pressure Nanosensors: A Study on Piezoresistive Behavior

Preparation of PVA/CNTs film with high stability and humidity sensitivity based on multiple process

Advancing High-Performance Piezoelectric Nanogenerators: Simple Electric Field Switching for Orientated and Aligned BaTiO₃/PDMS Composite

Contact Info

Product

Resources

About

Percolation threshold and effective properties of CNTs-reinforced two-phase composite materials

Cited by 5 publications

References 36 publications

Fabrication and Characterization of Carbon Nanotubes-Based Pressure Nanosensors: A Study on Piezoresistive Behavior

Fabrication and Characterization of Carbon Nanotubes-Based Pressure Nanosensors: A Study on Piezoresistive Behavior

Preparation of PVA/CNTs film with high stability and humidity sensitivity based on multiple process

Advancing High-Performance Piezoelectric Nanogenerators: Simple Electric Field Switching for Orientated and Aligned BaTiO3/PDMS Composite

Contact Info

Product

Resources

About

Advancing High-Performance Piezoelectric Nanogenerators: Simple Electric Field Switching for Orientated and Aligned BaTiO₃/PDMS Composite