Electrical mobility of silver nanowires in transition and continuum regimes

Park, Miso; Li, Mingdong; Shin, Weon Gyu; Moon, Hyun Jin; Ko, Seung Hwan

doi:10.1016/j.jaerosci.2014.02.001

Cited by 5 publications

(5 citation statements)

References 24 publications

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“…Based on the results reported by Li et al (2012) and Park et al (2014), silver nanowires inside the DMA have fully aligned orientation in our experiments. The theoretically predicted penetration should be obtained considering the morphology of nanowires.…”

Section: Resultssupporting

confidence: 82%

“…In addition, the diameter of filter fibers and the length and diameter of silver nanowires were obtained by the SEM image analysis. The size range of silver nanowires was from 200 to 400 nm in the mobility diameter similar to the one used in Park et al (2014) study. The orientation angles were obtained in order to match the experimental data with the theoretical prediction for the penetration of silver nanowires through a commercial polyester filter.…”

Section: Introductionmentioning

confidence: 80%

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Experimental investigation and numerical modeling of the orientation angle of silver nanowires passing through polyester filters

Lim

Park

Shin

2016

Aerosol Science and Technology

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In the present study, we measured the penetration of silver nanowires with the mobility diameter in the range from 200 to 400 nm through two different types of polyester filters: the screen filter with the solidity of 0.505 and fibrous filter with the solidity of 0.278. The orientation angles of silver nanowires passing through the single layer and multi-layers of polyester filter were experimentally estimated on the basis of the single fiber efficiency theory. In the case of the screen filter, the orientation angle obtained by fitting the experimental data for single layer was found to be close to 408, indicating a random orientation of nanowires near the filter. However, the fibrous filter has the orientation angle much larger than 408. The orientation angle can be affected by inhomogeneity of the filter. In particular, in the case of the fibrous filter, the solidity and fiber diameter may affect the orientation angle. For multi-layers of both screen and fibrous filters, it is difficult to determine the typical orientation angle and the fibrous filter tends to have a larger orientation angle than the screen filter. In addition, we carried out numerical simulations on the penetration of silver nanowires through the five layers of screen filter and the single layer of both screen and fibrous filters. Numerical prediction was carried out by using the three-dimensional numerical model determined by solidity and thickness of fibrous filter. Numerical predictions are highly congruent with experimental results and theoretical prediction.

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Section: Resultssupporting

confidence: 82%

Section: Introductionmentioning

confidence: 80%

Experimental investigation and numerical modeling of the orientation angle of silver nanowires passing through polyester filters

Lim

Park

Shin

2016

Aerosol Science and Technology

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“…According to its equation, it is evident that the decay time is inversely proportion to the migration rate. In the 1D structure, the carrier mobility increases with a decrease in the diameter of the nanofiber. − Therefore, this confirms that the NGA3 photodetector provides a more rapid decay time due to higher carrier mobility in the NGA3 photodetector compared to that in the FGA3 photodetector.…”

Section: Resultsmentioning

confidence: 57%

Ag-Nanoparticle-Coupled UV-Responsive Gelatin Nanofiber Photodetectors

Chen

Liu

Chang

et al. 2023

ACS Appl. Nano Mater.

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In this era of environmental protection and performance, the development of organic photodetectors is booming. The hydrogel material is beginning to attract attention because of its characteristics such as plasticity and ecofriendliness. However, it is still a challenge to achieve a high-speed response in biophotodetectors. Herein, the development of an organic one-dimensional nanostructured photodetector is proposed through rotary-jet injection of gelatin fibers incorporated with silver nanoparticles (Ag NPs). The variation in the photoelectric properties of thin-film, fibrous structures with different diameters of approximately 40 μm and 400 nm has been investigated. In particular, the gelatin–Ag NPs fiber photoreceptor with a diameter of about 400 nm improved the light-to-dark current ratio by up to 28000% higher than the film structure, with rise and decay times of only 0.23 and 0.56 s. In addition, the nanostructure effectively boosts the photocurrent and suppresses the dark current because of its confining domains. The Ag NPs within the gelatin nanofibers produce localized surface plasmon resonance in the UV-illumination environment, enhancing the light absorption of the photosensitive layer, which contributes directly to the increase in the rate of excitons. The novel structure of the hybridized gelatin nanofibers incorporating silver nitrate has offered the promising potential for organic photodetectors.

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“…The silver nanowires used in our experiments were synthesized using a modified polyol reduction process. A detailed description can be found in Park et al (2014). Figure 1 shows a schematic diagram of the experimental setup for measuring the mean charge on a particle.…”

Section: Experimental Methodsmentioning

confidence: 99%

The Effect of Particle Morphology on Unipolar Diffusion Charging of Silver Nanowires

Park

Moon

et al. 2015

Aerosol Science and Technology

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We investigated the effect of particle morphology on unipolar charging of nanowires. The average diameters of silver nanowires were 32, 48, and 68 nm. Particle electrical capacitance is an important parameter that determines the mean charge per particle in a continuum regime. We predicted that a nanowire has larger electrical capacitance than a sphere, and for a nanowire, the electrical capacitance increases as its diameter decreases. The mean charge per nanowire particle was calculated with the electrical capacitance obtained from theoretical analysis as a function of electrical mobility diameter. The mean charge per particle was measured for polystyrene latex particles with an electrical mobility diameter of 100-300 nm, and silver nanowires with an electrical mobility diameter of 200-400 nm. For a given electrical mobility diameter, the mean charge per particle of a nanowire in theoretical analysis and experiments was larger than that of a sphere, and it increased as the diameter of the nanowire decreased. Our results indicate that the mean charge per particle of a nanowire is dependent on particle morphology such as the diameter and the length.

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Electrical mobility of silver nanowires in transition and continuum regimes

Cited by 5 publications

References 24 publications

Experimental investigation and numerical modeling of the orientation angle of silver nanowires passing through polyester filters

Experimental investigation and numerical modeling of the orientation angle of silver nanowires passing through polyester filters

Ag-Nanoparticle-Coupled UV-Responsive Gelatin Nanofiber Photodetectors

The Effect of Particle Morphology on Unipolar Diffusion Charging of Silver Nanowires

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