Design and Optimization Principles of Cylindrical Sliding Triboelectric Nanogenerators.

Micromachines (Basel) · 2021 · PMC8155992 · PMID 34067748

Europe PMC DOI

hedged sentence

—

closest p

—

boldest claim

The sentences

an increasing trendno p-value reported

Although all of the CS-TENGs could produce stable electrical output, under the same excitation, their output voltage displayed significant differences, and the voltage demonstrated an increasing trend as the stiffness coefficient of the springs in the TENGs was increased.

also in 63,971 other papers

Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.