This research article introduces an electroactive actuator based on sulfonated chitosan(SCS),ionic liquid and graphene oxide(GO).To maintain the biocompatibility of the chitosan and to increase the actuation performan...This research article introduces an electroactive actuator based on sulfonated chitosan(SCS),ionic liquid and graphene oxide(GO).To maintain the biocompatibility of the chitosan and to increase the actuation performance,a biocompatible ionic liquid such as ethyl,methylimidazolium-trifluoro methane sulfonated(EMI-TFMS)as mobile solvent was used for dry-type actuation.And GO-reinforced SCS films obtained through a simple solvent casting method were extensively investigated because of better electro-chemo-mechanical properties and higher actuation performances.Field-emission scanning electron microscope(FE-SEM),X-ray diffraction(XRD),Fourier transformer infrared spectroscopy(FT-IR),and Raman spectra were used to investigate the interaction mechanism between GO and SCS.The harmonic and step responses of GO and SCS composite actuator show large bending deformations under low electric voltage.展开更多
Contact electrification is a direct triboelectrification method for producing current through charge transfer when two different differentiated materials have brought into contact.For the first time,we developed a sim...Contact electrification is a direct triboelectrification method for producing current through charge transfer when two different differentiated materials have brought into contact.For the first time,we developed a simple triboelectric nanogenerator(TENG)where the electronic charges were realized through contact separation mode between sand-polished Kapton(SPK)and Al surface.Here,we demonstrated the energetic interfacial contact between these surfaces and observed satisfactory output performance.The novel SPK-TENG produced 40 V and 2.8μA,of open-circuit voltages(V_(oc))and short-circuit currents(Isc)at 4 Hz,respectively.Mainly,the SPK-TENG was dramatically increased up the performance of TENG,up to 40% of V_(oc) and 42% of I_(sc),with respect to the Kapton film because the mobility of electrons is very high on the device surface compared to the other pristine Kapton film.The fabricated SPK-TENGs were good candidates for satisfying the need for alternative contact separation mode TENGs.展开更多
文摘This research article introduces an electroactive actuator based on sulfonated chitosan(SCS),ionic liquid and graphene oxide(GO).To maintain the biocompatibility of the chitosan and to increase the actuation performance,a biocompatible ionic liquid such as ethyl,methylimidazolium-trifluoro methane sulfonated(EMI-TFMS)as mobile solvent was used for dry-type actuation.And GO-reinforced SCS films obtained through a simple solvent casting method were extensively investigated because of better electro-chemo-mechanical properties and higher actuation performances.Field-emission scanning electron microscope(FE-SEM),X-ray diffraction(XRD),Fourier transformer infrared spectroscopy(FT-IR),and Raman spectra were used to investigate the interaction mechanism between GO and SCS.The harmonic and step responses of GO and SCS composite actuator show large bending deformations under low electric voltage.
基金supported by the National Research Foundation of Korea(NRF)grant funded by the Korean government(MSIP No.2017R1A2B2011730,No.2018R1A6A1A03024509 and No.2019R1A2C1011113).
文摘Contact electrification is a direct triboelectrification method for producing current through charge transfer when two different differentiated materials have brought into contact.For the first time,we developed a simple triboelectric nanogenerator(TENG)where the electronic charges were realized through contact separation mode between sand-polished Kapton(SPK)and Al surface.Here,we demonstrated the energetic interfacial contact between these surfaces and observed satisfactory output performance.The novel SPK-TENG produced 40 V and 2.8μA,of open-circuit voltages(V_(oc))and short-circuit currents(Isc)at 4 Hz,respectively.Mainly,the SPK-TENG was dramatically increased up the performance of TENG,up to 40% of V_(oc) and 42% of I_(sc),with respect to the Kapton film because the mobility of electrons is very high on the device surface compared to the other pristine Kapton film.The fabricated SPK-TENGs were good candidates for satisfying the need for alternative contact separation mode TENGs.
