Characterization of thin gold layers on polyethyleneterephthalate: transition from discontinuous to continuous, homogenous layer

Švorčı́k, Václav; Zehentner, J.; Rybka, V.; Slepička, Petr; Hnatowicz, V.

doi:10.1007/s003390101024

Cited by 40 publications

(25 citation statements)

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“…In [9], the conductivity of a sputtered gold layer is measured at dc. The measured curve with respect to layer thickness is shown in Fig.…”

Section: Thin Layer Conductivitymentioning

confidence: 99%

“…The measured sputtering time dependence of the reflection coefficient was taken from [8] and [9]. The measurement set up is depicted in Fig.…”

Section: Comparison Of Theoretically Computed and Measured Datamentioning

confidence: 99%

“…6, along with the equivalent circuit of the measured sample and waveguide termination. The gold layers on a polymer foil for various sputtering times were successively [8] and [9]. placed in the rectangular WR90 waveguide fed from the left with the mode TE .…”

Section: Comparison Of Theoretically Computed and Measured Datamentioning

confidence: 99%

“…In [8] and [9] a sputtered gold layer was experimentally investigated at microwave frequencies. It was found that for short sputtering times there is low reflection from a layer of disconnected gold particles, whereas for longer sputtering times there is high reflection from a homogeneous layer tens of nanometers in thickness.…”

Section: Introductionmentioning

confidence: 99%

“…It was found that for short sputtering times there is low reflection from a layer of disconnected gold particles, whereas for longer sputtering times there is high reflection from a homogeneous layer tens of nanometers in thickness. In addition, the conductivity of the sputtered layer was measured in [9].…”

Section: Introductionmentioning

confidence: 99%

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Microwave Reflectivity From Gold Sputtered Nanolayer

Buchar

Macháč

Zehentner

2007

IEEE Trans. Nanotechnology

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Abstract-This paper deals with reflectivity of a gold layer of nanometer-scale thickness sputtered on a dielectric foil at microwave frequencies. A model of nanometer-scale spheres characterizes the behavior of the layer. For short sputtering times, these spheres are separated, and later they touch each other to form a continuous layer. The structure is analyzed in several ways. The first model, as suggested in the literature, replaces the spheres by their electric dipole moments, while the second, newly proposed model replaces them by their mutual capacities. The structure is also being investigated by the CST Microwave Studio software. The data provided by the models is compared with the data obtained from measurements carried out and published by the authors previously. The reduction in effective conductivity of the layer due to microscopic phenomena in thin films is taken into account in the models. The measured conductivity is compared with values taken from the literature, and the differences are discussed.

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“…In [9], the conductivity of a sputtered gold layer is measured at dc. The measured curve with respect to layer thickness is shown in Fig.…”

Section: Thin Layer Conductivitymentioning

confidence: 99%

“…The measured sputtering time dependence of the reflection coefficient was taken from [8] and [9]. The measurement set up is depicted in Fig.…”

Section: Comparison Of Theoretically Computed and Measured Datamentioning

confidence: 99%

Section: Comparison Of Theoretically Computed and Measured Datamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Microwave Reflectivity From Gold Sputtered Nanolayer

Buchar

Macháč

Zehentner

2007

IEEE Trans. Nanotechnology

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Electromagnetic Shielding of Monolayer MXene Assemblies

et al. 2020

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Miniaturization of electronics demands electromagnetic interference (EMI) shielding of nanoscale dimension. The authors report a systematic exploration of EMI shielding behavior of 2D Ti3C2Tx MXene assembled films over a broad range of film thicknesses, monolayer by monolayer. Theoretical models are used to explain the shielding mechanism below skin depth, where multiple reflection becomes significant, along with the surface reflection and bulk absorption of electromagnetic radiation. While a monolayer assembled film offers ≈20% shielding of electromagnetic waves, a 24‐layer film of ≈55 nm thickness demonstrates 99% shielding (20 dB), revealing an extraordinarily large absolute shielding effectiveness (3.89 × 106 dB cm2 g−1). This remarkable performance of nanometer‐thin solution processable MXene proposes a paradigm shift in shielding of lightweight, portable, and compact next‐generation electronic devices.

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Characterization of evaporated and sputtered thin Au layers on poly(ethylene terephtalate)

Švorčı́k

Slepička

Švorčíková

et al. 2005

J of Applied Polymer Sci

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Gold layers were prepared on poly(ethylene terephtalate) substrate by diode sputtering and vacuum evaporation. The mean layer thickness was determined by atomic absorption spectroscopy. Sheet electrical resistance and reflection of electromagnetic waves were used for the characterization of layers. Surface morphology of the layers was determined using atomic force and scanning electron microscopy. While the sputtering was found to proceed with two different rates, the vacuum evaporation proceeds at a constant rate. Rapid decrease of the sheet resistance was observed during sputtering, depending on the layer thickness, in contrast to vacuum evaporation. This can be due to different mechanisms of the Au deposition. According to the measured reflection of electromagnetic waves, the layers prepared by both techniques, i.e., sputtering and vacuum evaporation, are discontinuous for thicknesses below 4 nm, continuous but heterogeneous for thickness from 4 to 10 nm, and continuous and homogeneous for thickness above10 nm. The morphology of the layers prepared by vacuum evaporation does not depend on the layer thickness. Rounded clusters are observed on the surface of the evaporated layers. The layers prepared by sputtering exhibit significantly different morphology with much smaller, pointed clusters.

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Characterization of thin gold layers on polyethyleneterephthalate: transition from discontinuous to continuous, homogenous layer

Cited by 40 publications

References 0 publications

Microwave Reflectivity From Gold Sputtered Nanolayer

Microwave Reflectivity From Gold Sputtered Nanolayer

Electromagnetic Shielding of Monolayer MXene Assemblies

Characterization of evaporated and sputtered thin Au layers on poly(ethylene terephtalate)

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