Multi-functional thin film coatings formed via nanogrinding

Sapkota, Raju; Zou, Jialin; Dawka, Sahil; Bobak, Julia E.; Papadopoulos, Chris

doi:10.1007/s13204-018-0812-y

Cited by 3 publications

(4 citation statements)

References 52 publications

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“…Higher grinding speed also concurrently reduced particle size below 100 nm (Figure 2d). A similar decreasing trend in particle size/film roughness was observed as grinding time was increased (at constant rpm) (see Figure 2e) [60].…”

Section: Film Morphology and Materials Characterizationsupporting

confidence: 76%

“…Planetary ball milling (PBM) is known for its ability to reliably produce large amounts of nanoscale particles in appropriate solvents by grinding high-purity bulk powders [51,[55][56][57][58][59][60] without requiring complex physical or chemical processing. Planetary mills are very energy efficient by utilizing the high-impact forces during rotary motion of a grinding jar containing the sample, grinding beads and a liquid medium, arranged eccentrically on a so-called sun wheel, which facilitates the rapid production of nanostructured thin films in an inexpensive manner.…”

Section: Introductionmentioning

confidence: 99%

“…The PBM process depends on various configurable parameters such as speed of revolution, milling time, and the ratio of beads to feed material. The grinding parameters and solvent used influence the properties and size distribution of the resulting nanoparticle inks and thin films [60], which can be optimized for different applications, including gas sensing.…”

Section: Introductionmentioning

confidence: 99%

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Thin Film Gas Sensors Based on Planetary Ball-Milled Zinc Oxide Nanoinks: Effect of Milling Parameters on Sensing Performance

et al. 2021

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Planetary ball-milled zinc oxide (ZnO) nanoparticle suspensions (nanoinks) were used to produce thin film chemiresistive gas sensors that operate at room temperature. By varying milling or grinding parameters (speed, time, and solvent) different thin film gas sensors with tunable particle sizes and porosity were fabricated and tested with dry air/oxygen against hydrogen, argon, and methane target species, in addition to relative humidity, under ambient light conditions. Grinding speeds of up to 1000 rpm produced particle sizes and RMS thin film roughness below 100 nm, as measured by atomic force and scanning electron microscopy. Raman spectroscopy, photoluminescence, and X-ray analysis confirmed the purity and structure of the resulting ZnO nanoparticles. Gas sensor response at room temperature was found to peak for nanoinks milled at 400 rpm and for 30 min in ethylene glycol and deionized water, which could be correlated to an increased film porosity and enhanced variation in electron concentration resulting from adsorption/desorption of oxygen ions on the surfaces of ZnO nanoparticles. Sensor response and dynamic behavior was found to improve as the temperature was increased, peaking between 100 and 150 °C. This work demonstrates the use of low-cost PBM nanoinks as the active materials for solution-processed thin film gas/humidity sensors for use in environmental, medical, food packaging, laboratory, and industrial applications.

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Section: Film Morphology and Materials Characterizationsupporting

confidence: 76%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Thin Film Gas Sensors Based on Planetary Ball-Milled Zinc Oxide Nanoinks: Effect of Milling Parameters on Sensing Performance

et al. 2021

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“…In this work, we present results on nanostructured ZnO thin film photodetectors fabricated using nanoparticle inks (nanoinks) obtained via planetary ball milling (PBM) of bulk ZnO powder. PBM (7) is an emerging solution-based nanofabrication approach that can quickly produce nanoink suspensions in various solvents at low-cost by nanoscale grinding, without complex processing and suitable for thin film coating of various materials on different substrates (8). Planetary mills utilize the high-impact forces during rotary motion of a grinding jar containing the sample, grinding beads and a liquid medium, arranged eccentrically on a so-called sun wheel, which facilitates the rapid production of nanostructured particles and the resulting films in an inexpensive manner.…”

Section: Introductionmentioning

confidence: 99%

Thin Film Photodetectors Based on Zinc Oxide Nanoinks

Dawka¹,

Duan²,

Sapkota³

et al. 2022

ECS Trans.

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We report on the fabrication and characterization of ZnO thin film photodetectors using planetary ball-milled nanoparticle suspensions (nanoinks). Milling parameters, speed and time, were varied between 200 rpm and 1000 rpm, and 10 and 60 minutes, respectively to produce suspensions with particles below 100 nm in diameter. The resulting PBM nanoinks were used to create ZnO thin films whose photoconductance was measured under broadband UV/visible illumination. Thin film ZnO photodetector devices showed strong response upon light exposure with up to an order of magnitude increase in photocurrent compared to baseline (dark) for the conditions studied. This work demonstrates the use of low-cost PBM nanoinks for the active materials in solution-processed thin film photodetectors based on ZnO and allows film properties to be tailored and optimized for different applications in a straightforward manner by adjusting grinding conditions.

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Silver Nanoparticles-Polyurea Composite Coatings on ASTM A194 Steel: A Study of Corrosion Behavior in Chloride Medium

Beiki

Mosavi

2020

J Bio Tribo Corros

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Multi-functional thin film coatings formed via nanogrinding

Cited by 3 publications

References 52 publications

Thin Film Gas Sensors Based on Planetary Ball-Milled Zinc Oxide Nanoinks: Effect of Milling Parameters on Sensing Performance

Thin Film Gas Sensors Based on Planetary Ball-Milled Zinc Oxide Nanoinks: Effect of Milling Parameters on Sensing Performance

Thin Film Photodetectors Based on Zinc Oxide Nanoinks

Silver Nanoparticles-Polyurea Composite Coatings on ASTM A194 Steel: A Study of Corrosion Behavior in Chloride Medium

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