Depth mapping of metallic nanowire polymer nanocomposites by scanning dielectric microscopy

Balakrishnan, H.; Millán-Solsona, Rubén; Checa, Martí; Fabregas, Rene; Fumagalli, Laura; Gomila, Gabriel

doi:10.1039/d1nr01058a

Cited by 10 publications

(9 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Scanning dielectric microscopy (SDM) measures the out-of-contact local electrostatic forces acting on the tip, when an AC voltage is applied between the conductive tip and a bottom electrode with the sample in between, obtaining the local capacitance gradient and the relative phase of the tip movement with the external excitation (see Methods section for details of implementation). SDM has extensively been used to map the dielectric and conductive properties (at the kHz-MHz frequency range) of various types of materials, ,− under different environmental conditions. − However, the complex quantification procedure, coupled with its lower sensitivity for materials with a high dielectric constant (usually the case for most ferroelectrics and ionic conductors) has meant SDM is underutilized for probing dielectric properties of ferroelectrics . Complementing SDM is scanning microwave microscopy (SMM), which can be utilized to explore dielectric and conductive phenomena on the nanoscale at higher frequencies (GHz) (see Supporting Information S1 for the correlative high-frequency imaging).…”

Section: Resultsmentioning

confidence: 99%

Revealing Fast Cu-Ion Transport and Enhanced Conductivity at the CuInP₂S₆–In_4/3P₂S₆ Heterointerface

et al. 2022

Self Cite

View full text Add to dashboard Cite

Van der Waals layered ferroelectrics, such as CuInP2S6 (CIPS), offer a versatile platform for miniaturization of ferroelectric device technologies. Control of the targeted composition and kinetics of CIPS synthesis enables the formation of stable self-assembled heterostructures of ferroelectric CIPS and nonferroelectric In4/3P2S6 (IPS). Here, we use quantitative scanning probe microscopy methods combined with density functional theory (DFT) to explore in detail the nanoscale variability in dynamic functional properties of the CIPS-IPS heterostructure. We report evidence of fast ionic transport which mediates an appreciable out-of-plane electromechanical response of the CIPS surface in the paraelectric phase. Further, we map the nanoscale dielectric and ionic conductivity properties as we thermally stimulate the ferroelectric-paraelectric phase transition, recovering the local dielectric behavior during this phase transition. Finally, aided by DFT, we reveal a substantial and tunable conductivity enhancement at the CIPS/IPS interface, indicating the possibility of engineering its interfacial properties for next generation device applications.

show abstract

Section: Resultsmentioning

confidence: 99%

Revealing Fast Cu-Ion Transport and Enhanced Conductivity at the CuInP₂S₆–In_4/3P₂S₆ Heterointerface

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…For instance, Balakrishnan et al used scanning dielectric microscopy to map the depth distribution of MNWs within the MNW/polymer‐based nanocomposites, in a non‐destructive way. [ 467 ] This was achieved thanks to a quantitative analysis of subsurface electrostatic force microscopy measurements with finite‐element numerical calculations. [ 467 ] Milano et al also demonstrated that the electrical resistance tomography (ERT) method can be used to follow in situ the evolution of the conductivity of AgNW networks and observe the origin of their degradation.…”

Section: Conclusion and Prospectsmentioning

confidence: 99%

“…[ 467 ] This was achieved thanks to a quantitative analysis of subsurface electrostatic force microscopy measurements with finite‐element numerical calculations. [ 467 ] Milano et al also demonstrated that the electrical resistance tomography (ERT) method can be used to follow in situ the evolution of the conductivity of AgNW networks and observe the origin of their degradation. [ 468 ] Sannicolo et al used IR imagery to detect the activation of the first percolative paths of sparse AgNW networks, [ 27 ] as well as the origin of the degradation of AgNWs submitted to electrical stress.…”

Section: Conclusion and Prospectsmentioning

confidence: 99%

Advances in Flexible Metallic Transparent Electrodes

Nguyễn

Papanastasiou

Resende³

et al. 2022

Small

View full text Add to dashboard Cite

Transparent electrodes (TEs) are pivotal components in many modern devices such as solar cells, light‐emitting diodes, touch screens, wearable electronic devices, smart windows, and transparent heaters. Recently, the high demand for flexibility and low cost in TEs requires a new class of transparent conductive materials (TCMs), serving as substitutes for the conventional indium tin oxide (ITO). So far, ITO has been the most used TCM despite its brittleness and high cost. Among the different emerging alternative materials to ITO, metallic nanomaterials have received much interest due to their remarkable optical‐electrical properties, low cost, ease of manufacturing, flexibility, and widespread applicability. These involve metal grids, thin oxide/metal/oxide multilayers, metal nanowire percolating networks, or nanocomposites based on metallic nanostructures. In this review, a comparison between TCMs based on metallic nanomaterials and other TCM technologies is discussed. Next, the different types of metal‐based TCMs developed so far and the fabrication technologies used are presented. Then, the challenges that these TCMs face toward integration in functional devices are discussed. Finally, the various fields in which metal‐based TCMs have been successfully applied, as well as emerging and potential applications, are summarized.

show abstract

“…The potential of SPM mechanical and dielectric characterization to obtain subsurface information has been widely proven [48][49][50][51], and in the case of cells could be specifically relevant to gather knowledge of internal structure such as smaller cell organelles or internal cell biological processes [51]. The force-volumetric approach used in this work could enable obtaining both local mechanical and dielectric information on the cell simultaneously.…”

Section: 1402 8 Of 13mentioning

confidence: 99%

Dielectric Imaging of Fixed HeLa Cells by In-Liquid Scanning Dielectric Force Volume Microscopy

et al. 2021

Self Cite

View full text Add to dashboard Cite

Mapping the dielectric properties of cells with nanoscale spatial resolution can be an important tool in nanomedicine and nanotoxicity analysis, which can complement structural and mechanical nanoscale measurements. Recently we have shown that dielectric constant maps can be obtained on dried fixed cells in air environment by means of scanning dielectric force volume microscopy. Here, we demonstrate that such measurements can also be performed in the much more challenging case of fixed cells in liquid environment. Performing the measurements in liquid media contributes to preserve better the structure of the fixed cells, while also enabling accessing the local dielectric properties under fully hydrated conditions. The results shown in this work pave the way to address the nanoscale dielectric imaging of living cells, for which still further developments are required, as discussed here.

show abstract

Depth mapping of metallic nanowire polymer nanocomposites by scanning dielectric microscopy

Abstract: Polymer nanocomposite materials based on metallic nanowires are widely investigated as transparent and flexible electrodes or as stretchable conductors and dielectrics for biosensing. Here we show that Scanning Dielectric Microscopy...

Cited by 10 publications

References 60 publications

Revealing Fast Cu-Ion Transport and Enhanced Conductivity at the CuInP₂S₆–In_4/3P₂S₆ Heterointerface

Revealing Fast Cu-Ion Transport and Enhanced Conductivity at the CuInP₂S₆–In_4/3P₂S₆ Heterointerface

Advances in Flexible Metallic Transparent Electrodes

Dielectric Imaging of Fixed HeLa Cells by In-Liquid Scanning Dielectric Force Volume Microscopy

Contact Info

Product

Resources

About

Depth mapping of metallic nanowire polymer nanocomposites by scanning dielectric microscopy

Abstract: Polymer nanocomposite materials based on metallic nanowires are widely investigated as transparent and flexible electrodes or as stretchable conductors and dielectrics for biosensing. Here we show that Scanning Dielectric Microscopy...

Cited by 10 publications

References 60 publications

Revealing Fast Cu-Ion Transport and Enhanced Conductivity at the CuInP2S6–In4/3P2S6 Heterointerface

Revealing Fast Cu-Ion Transport and Enhanced Conductivity at the CuInP2S6–In4/3P2S6 Heterointerface

Advances in Flexible Metallic Transparent Electrodes

Dielectric Imaging of Fixed HeLa Cells by In-Liquid Scanning Dielectric Force Volume Microscopy

Contact Info

Product

Resources

About

Revealing Fast Cu-Ion Transport and Enhanced Conductivity at the CuInP₂S₆–In_4/3P₂S₆ Heterointerface

Revealing Fast Cu-Ion Transport and Enhanced Conductivity at the CuInP₂S₆–In_4/3P₂S₆ Heterointerface