Calculation of transition matrix element, |MAB|, in a triboelectric nanogenerator (TENG) system

Model of electric charge distribution in the trap of a close-contact TENG system

“…Our physical system was described by close contact model between the metal and the trap in the insulator as in, for example, slidingmode triboelectric nanogenerator where contact and separation were not repeated, but close contact was maintained. Once the contact and separation occur, there exists a vacuum region between the metal and the insulator that can form a potential barrier [11]. After electron transfer, due to the accumulated charges the electric field can be formed which can lead to the formation of sloped potential barrier.…”

“…Charge transfer can occur between the two triboelectric materials when very close contact is maintained. In the contact-separation mode, an electric field is formed between the two surfaces upon separation, leading to the formation of a vacuum potential through which electrons can tunnel [11]. During contact, the driving force for a charge transfer can be described based on the work function difference between the materials.…”

High-order calculation of triboelectric charge density using a transition matrix element in a triboelectric nanogenerator system

“…The tribo-charge density (σ) can be generated by contact between two triboelectric materials where, when separated as a result of σ, an electric field E is formed between them, which can then lead to a vacuum level shift or the formation of a vacuum potential barrier [1,2]. The electrons can then reach an equilibrium state by free tunneling through the barrier within the critical tunneling distance (4-5 Å).…”