Solution-processed negative gauge factor PtSe2 strain sensors

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F25%3A43932180" target="_blank" >RIV/60461373:22310/25:43932180 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.rsc.org/en/content/articlehtml/2025/nr/d5nr01217a" target="_blank" >https://pubs.rsc.org/en/content/articlehtml/2025/nr/d5nr01217a</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d5nr01217a" target="_blank" >10.1039/d5nr01217a</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Solution-processed negative gauge factor PtSe2 strain sensors

Popis výsledku v původním jazyce

We undertake electrochemical exfoliation of a 2D semiconductor platinum diselenide, PtSe2 and investigate the piezoresistance response of a solution-processed network. Due to the large PtSe2 aspect ratios, exceeding 300, we achieve conformal flake-to-flake junctions and good inter-flake electrical coupling. Our measured piezoresistive gauge factor is negative (-5.45), consistent with the intrinsic negative gauge factor of PtSe2. This negative network gauge factor implies that strain is transferred from the substrate to the nanosheets. However, detailed modelling shows that the strain transferred to the nanosheets is much smaller than the applied strain, showing that conformal junctions do not necessarily lead to good mechanical coupling between nanosheets. Our model implies that this gauge factor is consistent with a strain transfer efficiency of 8.5%. Our strain sensor also demonstrated a cyclic response for over 1000 cycles, enabling the sensor to be used in future flexible optoelectronics applications.

Název v anglickém jazyce

Solution-processed negative gauge factor PtSe2 strain sensors

Popis výsledku anglicky

We undertake electrochemical exfoliation of a 2D semiconductor platinum diselenide, PtSe2 and investigate the piezoresistance response of a solution-processed network. Due to the large PtSe2 aspect ratios, exceeding 300, we achieve conformal flake-to-flake junctions and good inter-flake electrical coupling. Our measured piezoresistive gauge factor is negative (-5.45), consistent with the intrinsic negative gauge factor of PtSe2. This negative network gauge factor implies that strain is transferred from the substrate to the nanosheets. However, detailed modelling shows that the strain transferred to the nanosheets is much smaller than the applied strain, showing that conformal junctions do not necessarily lead to good mechanical coupling between nanosheets. Our model implies that this gauge factor is consistent with a strain transfer efficiency of 8.5%. Our strain sensor also demonstrated a cyclic response for over 1000 cycles, enabling the sensor to be used in future flexible optoelectronics applications.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Nanoscale

ISSN

2040-3364

e-ISSN

2040-3372

Svazek periodika

17

Číslo periodika v rámci svazku

8th July 2025

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

18083-18091

Kód UT WoS článku

001532390900001

EID výsledku v databázi Scopus

—