Fabrication, Characterization and Thermal Properties of Nanowires

Chen, Yang‐Yuan; Chen, Cheng-Lung; Lee, Ping-Chung; Ou, M. N.

doi:10.5772/16941

Cited by 4 publications

(3 citation statements)

References 37 publications

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“…Figure 10 shows the change in the relative resistance with respect to the increase in pressure for the four values of temperature. The change in relative resistance increases with temperature for a particular pressure is due to the properties of the gold thin-films [50][51][52]. The reason behind this phenomenon can be attributed to the vibrational effect of the sputtered layer about their home positions, which causes an increase in thermal energy.…”

Section: Resultsmentioning

confidence: 99%

Gold/Polyimide-Based Resistive Strain Sensors

et al. 2019

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This paper presents the fabrication and implementation of novel resistive sensors that were implemented for strain-sensing applications. Some of the critical factors for the development of resistive sensors are addressed in this paper, such as the cost of fabrication, the steps of the fabrication process which make it time-consuming to complete each prototype, and the inability to achieve optimised electrical and mechanical characteristics. The sensors were fabricated via magnetron sputtering of thin-film chromium and gold layer on the thin-film substrates at defined thicknesses. Sticky copper tapes were attached on the two sides of the sensor patches to form the electrodes. The operating principle of the fabricated sensors was based on the change in their responses with respect to the corresponding changes in their relative resistance as a function of the applied strain. The strain-induced characteristics of the patches were studied with different kinds of experiments, such as consecutive bending and pressure application. The sensors with 400 nm thickness of gold layer obtained a sensitivity of 0.0086 Ω/ppm for the pressure ranging between 0 and 400 kPa. The gauge factor of these sensors was between 4.9–6.6 for temperatures ranging between 25 °C and 55 °C. They were also used for tactile sensing to determine their potential as thin-film sensors for industrial applications, like in robotic and pressure-mapping applications. The results were promising in regards to the sensors’ controllable film thickness, easy operation, purity of the films and mechanically sound nature. These sensors can provide a podium to enhance the usage of resistive sensors on a higher scale to develop thin-film sensors for industrial applications.

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Section: Resultsmentioning

confidence: 99%

Gold/Polyimide-Based Resistive Strain Sensors

et al. 2019

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“…Penurunan nilai resistivitas pada material ZnO dengan variasi hidrotermal diduga disebabkan oleh beberapa faktor. Pertama, meningkatnya keteraturan nanorods yang tumbuh di atas substrat ITO dengan adanya perlakuan hidrotermal sehingga menyebabkan penurunan hamburan elektron di nanorods [17]- [18]. Kedua, meningkatnya mobilitas pembawa muatan akibat peningkatan ukuran butir (kristalit) rata rata nanorods ZnO, seperti yang telah diperlihatkan sebelumnya melalui analisis XRD dan SEM (scanning electron microscope).…”

Section: Lapisan Tipisunclassified

Pengaruh Perlakuan Hidrotermal Terhadap Morfologi, Sifat Optik Dan Sifat Listrik Lapisan Tipis Nanorods Zno

Suhaimi¹

2020

metal.

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Zinc oxide nanorods (ZnO NRs) is a semiconductor material that has been widely applied in various fields. In this research, ZnO NRs were successfully grown on ITO substrates by chemichal bath deposition (CBD) method. The process begins with making a seed solution using an ecimolar mixture of Zn-Nitrate and hexamethylentetramine (HMTA) at 00C for one hour with 0.015 M concentration. Furthermore, making a layer of seeds using spin coating technique. ZnO NRs were grown using the CBD method at 900C for three hours then treated with variations which are hydrothermal method treatment and non-hydrothermal method treatment at 1500C for three hours. Samples were given characterization treatment using SEM, XRD, UV-Vis and four-point probe. SEM results showed that hydrothermal treatment was able to increase the coverage of nanorods on the substrate to be more prevelently and was able to increase the vertical structure of the nanorods. The results of XRD analysis showed that samples given hydrothermal treatment experienced an increase in the crystallite size. The amount of crystallite size in the sample treated with variation of non-hydrothermal treatment and hydrothermal treatment was 71, 198 and 165.696 nm. Hydrothermal treatment of nanorods samples decreased the sample diameter from 288,252 nm to 125,824 nm. The transmittance value of the samples decreased in the presence of hydrothermal treatment which is 56.53% to 38.67%. The hydrothermal treatment was able to reduce the energy bandgap (Eg) of the sample, while the sample of non-hydrothermal treatment showed value of the Eg was 3.22 eV. Meanwhile, the value of Eg after hydrothermal treatment was 3.17 eV. The resistivity value of ZnO NRs with hydrothermal treatment was 0.833 x 10-4 Ωcm, while the resistivity value of non-hydrothermal treatment was 1.126 x 10-4 Ωcm. Key words: zinc-oxide nanorods, chemical bath deposition, hydro-thermal

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“…Magnetic nature of nanowires in high ordering give rise to outstanding properties different from the bulk, powder and even from thin film systems [5,6]. Among different methods of nanowires synthesis, such as lithography, vapor liquid solid and template base methods, the latter can deliver high-density nanowire arrays of precise parameters including length, diameter and crystallinity [7e9].…”

Section: Introductionmentioning

confidence: 99%