Silver films on aluminum alloy 6061 modified by ion bombardment improves surface reflectivity

Yin, Jiaheng; Cao, Yongzhi; Wang, Kaijie; Lu, Lihua; Du, Yunlong; Yan, Yongda

doi:10.1016/j.vacuum.2021.110505

Cited by 7 publications

(3 citation statements)

References 38 publications

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“…Since the target may be oxidized or contaminated by particles, a pre-sputtering process was carried out for half an hour before sputtering onto the substrate, ensuring the deposition of high quality Ag film. The sputtering parameters were set with a flow rate of 15 SCCM, a chamber pressure of 10 mTorr, and a power of 40 W. For Ag films with thicknesses above 200 nm, the reflectivity does not change with increasing thickness, [48][49][50] so the sputtering time was set to 1200 s.…”

Section: Design and Fabrication Of Microfluidic Chipsmentioning

confidence: 99%

The Nanosilver Imprinted Cross‐Channel Film used in Microfluidic Chips Based on Microcavity Resonator for Mercury Assessment

Wen,

Hsu

2023

Advanced Sensor Research

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In this study, a highly sensitive optical probe is designed, fabricated, and evaluated that is composed of a microfluidic device integrated with a fiber optic sensor for environmental monitoring. The resonant cavity is coated with a metal ion‐responsive molecularly imprinted nanocomposite film and monitored by a single‐mode fiber (SMF) optic sensor. The resulting Fabry–Pérot cavity‐based optical probe can accurately measure Hg levels in water with high sensitivity and stability. The nanocomposite film is synthesized using a one‐pot reaction process involving sodium alginate (SA)‐reduced nanosilver particles (nanoAg) dispersed in polyvinyl alcohol (VA). When an aqueous solution containing mercury is injected into the microfluidic device, interactions between Ag and Hg at the nanoscale form a solid Ag‐Hg solid amalgam in the resonant cavity, and surface plasmon resonance (SPR) and the Fabry–Pérot effect can be exploited to detect the presence of Hg. The synthesis, fabrication, and measurement system of this integrated device is simple and cost effective. The developed sensing heavy metals in wastewater treatment, catalysis enhancement, and nanoscale toxicity assessment, and contributes practically to achieving the sustainable development goal (SDG) of access to safe drinking water.

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Section: Design and Fabrication Of Microfluidic Chipsmentioning

confidence: 99%

The Nanosilver Imprinted Cross‐Channel Film used in Microfluidic Chips Based on Microcavity Resonator for Mercury Assessment

Wen,

Hsu

2023

Advanced Sensor Research

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“…The room and initial temperatures of the model were 293.15 K. For the experimental evaluation, the μTEG was irradiated by a continuous laser with powers of 0.1, 0.2, 0.3, and 0.4 W; the μTEG had a spot that covered the top surface of the device. As the reflectivity of magnetron sputtered Ag for 1064-nm-laser was ≈98.5%, [37,38] the absorbed heat of the device could be calculated as 1.5, 3, 4.5, and 6 mW for heat fluxes of 500, 1000, 1500, and 2000 W m −2 , respectively.…”

Section: Finite Element Modeling and Experimental Textmentioning

confidence: 99%

Wearable Respiration Sensor for Continuous Healthcare Monitoring Using a Micro‐Thermoelectric Generator with Rapid Response Time and Chip‐Level Design

Zhu

Zhou

et al. 2022

Adv Materials Technologies

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Thermoelectric generators (TEG) serve as excellent passive wearable sensors for monitoring human body heat. However, a micro‐TEG (μTEG) with chip‐level size, rapid response, and high and stable responsivity is desired for real‐time and full‐time respiration monitoring to predict and diagnose breath‐related diseases. In this study, a thin‐film compact μTEG is elaborately designed by combining an ultrathin vertical structure for rapid heat conduction and a horizontal high‐integration density for transient response and a high filling rate. The device integrated with 28‐pair micro thermoelectric (TE) legs is fabricated on an aluminum nitride (AlN) substrate, which is patterned using ultrafast laser direct writing with embedded bottom contacts and TE legs. This unique design of the proposed μTEG provides a rapid response of 8 ms and chip‐level size of 1.9 mm × 2.7 mm × 400 μm for easy wearability. Additionally, application scenarios of real‐time respiration monitoring are demonstrated by mounting the μTEG under the nostril and near the mouth. The recorded airflow signals are displayed precisely with distinct features separating the nose and mouth breathing. Thus, the study presents a subtle and wearable respiration sensor for real‐time and full‐time human physiological signal acquisition.

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“…However, the soft texture of the aluminum alloy surface and its susceptibility to scratching are also apparent, thus limiting its application in the visible light field. Modification on the substrate surface is a common method to improve the optical performance of the mirror surface [3,4]. Ni-P alloys are an excellent modified layer material that is widely used in the aviation and defense industries [5,6].…”

Section: Introductionmentioning

confidence: 99%

Sub-Nanometer Accuracy Combination Processing Technology for Nickel–Phosphorus Modified Surfaces Based on Aluminum Reflector Mirror

Lai

et al. 2022

Micromachines

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The surface of metal mirrors is often polished by electroless coating with a Ni–P modified layer after single-point diamond turning. In practice, however, improvements in mirror quality are closely related to the polishing environment, polishing medium, and polishing force. If not adequately controlled, processing defects such as visible scratches can lead to the deterioration of surface roughness. Based on the Ni–P modified surface of a metal reflector mirror, this study optimizes the configuration of magnetorheological figuring (MRF) fluid and polishing process parameters so that MRF high-efficiency surface modification can be realized and the scratch problem can be resolved. The processing method of a high-performance metal mirror is developed by studying the high-efficiency and high-precision processing technology based on small head smoothing. The surface roughness achieved by the proposed method was better than Ra = 0.39 nm. The ultrasonic cleaning process effectively improved the surface roughness after processing. According to the combined processing technology developed in this study, the modified layer of the parabolic mirror with a diameter of 370 mm was processed, and the surface quality was increased from RMS = 338.684 nm to RMS = 21.267 nm.

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Silver films on aluminum alloy 6061 modified by ion bombardment improves surface reflectivity

Cited by 7 publications

References 38 publications

The Nanosilver Imprinted Cross‐Channel Film used in Microfluidic Chips Based on Microcavity Resonator for Mercury Assessment

The Nanosilver Imprinted Cross‐Channel Film used in Microfluidic Chips Based on Microcavity Resonator for Mercury Assessment

Wearable Respiration Sensor for Continuous Healthcare Monitoring Using a Micro‐Thermoelectric Generator with Rapid Response Time and Chip‐Level Design

Sub-Nanometer Accuracy Combination Processing Technology for Nickel–Phosphorus Modified Surfaces Based on Aluminum Reflector Mirror

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