Plasma-Driven Photocatalysis Based on Gold Nanoporous Arrays

Various effects caused by surface plasmons including enhanced electromagnetic field, local heating, and excited electrons/holes can not only redistribute the electromagnetic field in the time domain and space but also redistribute the excited carriers and drive chemical reactions. In this study, firstly, an Au nanoporous array photocatalyst with the arrayed gauge was prepared by means of the anodic alumina template. Then, the formation of 4,4′-dimercaptoazobenzene (DMAB) by the surface plasmon-driven photocatalysis under 633 nm laser irradiation was investigated by means of Raman spectroscopy using aminothiophenol (PATP) as a probe molecule on gold nananoporous arrays. In addition, sodium borohydride was introduced in situ to realize the reverse photocatalytic reaction driven by the surface plasma. With the help of FDTD software, the plasma distribution characteristics on the surface of Au nanoporous arrays were simulated and analyzed. Through this practical method, it is expected to draw specific graphics, letters, and Chinese characters on the micro/nano scale, and realize the functions of graphics drawing, information encryption, reading, and erasing on the micro/nano scale.

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In Situ Electrochemical Thinning of Barrier Oxide Layer of Porous Anodic Alumina Template

Advanced Science Letters ◽

10.1166/asl.2012.2018 ◽

2012 ◽

Vol 5 (1) ◽

pp. 253-257 ◽

Cited By ~ 5

Author(s):

P. Chowdhury ◽

S. Boominatha Sellarajan ◽

M. Krishnan ◽

K. Raghuvaran ◽

Harish.C. Barshilia ◽

...

Keyword(s):

Oxide Layer ◽

Anodic Alumina ◽

Porous Anodic Alumina ◽

Alumina Template ◽

Porous Anodic Alumina Template ◽

Anodic Alumina Template

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Infiltration of VOPcPhO into porous alumina template grown by in situ method

RSC Advances ◽

10.1039/c6ra03217f ◽

2016 ◽

Vol 6 (44) ◽

pp. 37574-37582 ◽

Cited By ~ 2

Author(s):

Muhammad Zharfan Mohd Halizan ◽

Abdullah Haaziq Ahmad Makinudin ◽

Azzuliani Supangat

Keyword(s):

Phosphoric Acid ◽

Glass Substrate ◽

Porous Alumina ◽

Anodic Alumina ◽

Alumina Template ◽

Porous Alumina Template ◽

In Situ Method ◽

Anodic Alumina Template

In this study, the fabrication of in situ anodic alumina template (AAO) directly onto glass substrate is realized by varying stirring speeds and molarity of phosphoric acid.

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Observing growth under confinement: Sn nanopillars in porous alumina templates

Nanoscale Advances ◽

10.1039/c9na00473d ◽

2019 ◽

Vol 1 (12) ◽

pp. 4764-4771 ◽

Cited By ~ 1

Author(s):

Gary S. Harlow ◽

Jakub Drnec ◽

Tim Wiegmann ◽

Weronica Lipé ◽

Jonas Evertsson ◽

...

Keyword(s):

Porous Alumina ◽

Depth Profiling ◽

High Energy ◽

Alumina Template ◽

Time Resolved ◽

X Ray ◽

Porous Anodic Alumina Template ◽

Ordered Porous ◽

Anodic Alumina Template

Using a micro-focused high-energy X-ray beam, we have performed in situ time-resolved depth profiling during the electrochemical deposition of Sn into an ordered porous anodic alumina template.

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Fabrication of Fe nanowires using anodic alumina template

10.26434/chemrxiv.5743176 ◽

2017 ◽

Author(s):

yongson hong ◽

O Pong-Sik ◽

Ryang Se-Hun ◽

Sin Kum-Chol ◽

Ri Un-Byol

Keyword(s):

Magnetic Property ◽

Deposition Time ◽

Anodic Alumina ◽

Aao Template ◽

Alumina Template ◽

Deposition Voltage ◽

Temperature Deposition ◽

Anodic Alumina Template

In this paper, we considered fabrication of Fe nanowires by AAO template, magnetic property, and influences (fabrication voltage of template, temperature, deposition time, and deposition voltage) on them. <br>

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Study on the influence on the formation of highly ordered porous anodic aluminia membrane

10.26434/chemrxiv.5743170.v1 ◽

2017 ◽

Author(s):

O Pong-Sik ◽

Ryang Se-Hun ◽

Sin Gum-Chol ◽

Hwang Guk-Nam ◽

yongson hong

Keyword(s):

Pore Diameter ◽

Electrolyte Concentration ◽

Aao Template ◽

Alumina Template ◽

Wide Range ◽

Electrochemical Mechanism ◽

Porous Anodic Alumina Template ◽

Ordered Porous ◽

Anodic Alumina Template ◽

Scanning Electron

We have studied porous anodic alumina template through the second anodic oxidation of preparation. Observing the morphology of nanoscale AAO template using scanning electron microscope (SEM), the results indicate that the pores are orderly paralleled arranged with uniform pore diameter, perpendicular to the template surface. A detailed study of the influence of different oxidation conditions, such as different type of electrolyte, concentration, voltage and temperature on the template of alumina and its electrochemical mechanism were performed. By changing the oxidation voltage, electrolyte type, concentration, pore diameter and template thickness can be altered in a wide range such that we can obtain the desired aspect ratio. <br>

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Basic standard for the in-situ measurement of electromagnetic field strength related to human exposure in the vicinity of base stations

10.3403/30155010 ◽

2009 ◽

Keyword(s):

Electromagnetic Field ◽

Field Strength ◽

Human Exposure ◽

In Situ Measurement ◽

Base Stations ◽

Electromagnetic Field Strength ◽

Basic Standard

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Exposure to Electromagnetic Fields (EMF) from Submarine Power Cables Can Trigger Strength-Dependent Behavioural and Physiological Responses in Edible Crab, Cancer pagurus (L.)

Journal of Marine Science and Engineering ◽

10.3390/jmse9070776 ◽

2021 ◽

Vol 9 (7) ◽

pp. 776

Author(s):

Kevin Scott ◽

Petra Harsanyi ◽

Blair A. A. Easton ◽

Althea J. R. Piper ◽

Corentine M. V. Rochas ◽

...

Keyword(s):

Electromagnetic Field ◽

Policy Making ◽

Physiological Responses ◽

Dependent Manner ◽

Power Cables ◽

Environmental Assessments ◽

Cancer Pagurus ◽

Commercially Important ◽

Total Haemocyte Count

The current study investigated the effects of different strength Electromagnetic Field (EMF) exposure (250 µT, 500 µT, 1000 µT) on the commercially important decapod, edible crab (Cancer pagurus, Linnaeus, 1758). Stress related parameters were measured (l-Lactate, d-Glucose, Total Haemocyte Count (THC)) in addition to behavioural and response parameters (shelter preference and time spent resting/roaming) over 24 h periods. EMF strengths of 250 µT were found to have limited physiological and behavioural impacts. Exposure to 500 µT and 1000 µT were found to disrupt the l-Lactate and d-Glucose circadian rhythm and alter THC. Crabs showed a clear attraction to EMF exposed (500 µT and 1000 µT) shelters with a significant reduction in time spent roaming. Consequently, EMF emitted from MREDs will likely affect crabs in a strength-dependent manner thus highlighting the need for reliable in-situ measurements. This information is essential for policy making, environmental assessments, and in understanding the impacts of increased anthropogenic EMF on marine organisms.

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In-situ monitoring for liquid metal jetting using a millimeter-wave impedance diagnostic

Scientific Reports ◽

10.1038/s41598-020-79266-2 ◽

2020 ◽

Vol 10 (1) ◽

Author(s):

Tammy Chang ◽

Saptarshi Mukherjee ◽

Nicholas N. Watkins ◽

David M. Stobbe ◽

Owen Mays ◽

...

Keyword(s):

Liquid Metal ◽

Millimeter Wave ◽

Manufacturing Systems ◽

Wave Impedance ◽

In Situ Monitoring ◽

Full Wave ◽

Drop On Demand ◽

The Time Domain ◽

Metal Droplets

AbstractThis article presents a millimeter-wave diagnostic for the in-situ monitoring of liquid metal jetting additive manufacturing systems. The diagnostic leverages a T-junction waveguide device to monitor impedance changes due to jetted metal droplets in real time. An analytical formulation for the time-domain T-junction operation is presented and supported with a quasi-static full-wave electromagnetic simulation model. The approach is evaluated experimentally with metallic spheres of known diameters ranging from 0.79 to 3.18 mm. It is then demonstrated in a custom drop-on-demand liquid metal jetting system where effective droplet diameters ranging from 0.8 to 1.6 mm are detected. Experimental results demonstrate that this approach can provide information about droplet size, timing, and motion by monitoring a single parameter, the reflection coefficient amplitude at the input port. These results show the promise of the impedance diagnostic as a reliable in-situ characterization method for metal droplets in an advanced manufacturing system.

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