Anomalous elasticity and damping in covalently cross-linked graphene aerogels

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985882%3A_____%2F22%3A00553419" target="_blank" >RIV/67985882:_____/22:00553419 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/22:00553419 RIV/00216208:11310/22:10439409 RIV/68407700:21340/22:00360456

Výsledek na webu

<a href="http://hdl.handle.net/11104/0330530" target="_blank" >http://hdl.handle.net/11104/0330530</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/s42005-022-00806-5" target="_blank" >10.1038/s42005-022-00806-5</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Anomalous elasticity and damping in covalently cross-linked graphene aerogels

Popis výsledku v původním jazyce

Elasticity in materials is a phenomenon that provides a basis for widespread practical applications in engineering, medicine, and electronics. Most of the conventional materials can withstand only small deformations within the elastic limit, typically below 5% of their original size. Here, we report a graphene aerogel made of covalently cross-linked graphene sheets that exhibits anomalous superelastic behavior up to 92% of compressive and 68% tensile strain. We show that the graphene aerogel has a nonlinear stress-strain characteristic with the compressive and tensile yield strength of 4.5 GPa and 0.6 MPa, respectively. By considering the elastic bending of graphene sheets and buckle folding of pore walls, we develop a quantitative origami model that describes the stress-strain behavior of the aerogel. In addition, we analyze the mechanical oscillations of the graphene aerogel, observing superfast vibration damping within a time scale of 50–250 ns.

Název v anglickém jazyce

Anomalous elasticity and damping in covalently cross-linked graphene aerogels

Popis výsledku anglicky

Elasticity in materials is a phenomenon that provides a basis for widespread practical applications in engineering, medicine, and electronics. Most of the conventional materials can withstand only small deformations within the elastic limit, typically below 5% of their original size. Here, we report a graphene aerogel made of covalently cross-linked graphene sheets that exhibits anomalous superelastic behavior up to 92% of compressive and 68% tensile strain. We show that the graphene aerogel has a nonlinear stress-strain characteristic with the compressive and tensile yield strength of 4.5 GPa and 0.6 MPa, respectively. By considering the elastic bending of graphene sheets and buckle folding of pore walls, we develop a quantitative origami model that describes the stress-strain behavior of the aerogel. In addition, we analyze the mechanical oscillations of the graphene aerogel, observing superfast vibration damping within a time scale of 50–250 ns.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

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

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

COMMUNICATIONS PHYSICS

ISSN

2399-3650

e-ISSN

2399-3650

Svazek periodika

5

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

27

Kód UT WoS článku

000744995500001

EID výsledku v databázi Scopus

2-s2.0-85123223200