Plasma Cleaning for Electronic, Photonic, Biological, and Archeological Applications

Levitin, Galit; Reinhardt, Kitt; Hess, Dennis W.

doi:10.1016/b978-1-4377-7881-6.00002-8

Cited by 10 publications

(10 citation statements)

References 126 publications

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“…Plasma etching is a surface cleaning technique often used to clean or remove material surfaces, such as removing the skin of polymeric samples. [42][43][44] Oxygen plasma etching was performed on solvent cast membranes to remove the surface skin layer, and successful skin removal was completed by treating PCOE NPMs with 30 W of power supplied to the RF coil (Fig. 6b-d).…”

Section: Resultsmentioning

confidence: 99%

Tough polycyclooctene nanoporous membranes from etchable block copolymers

Hoehn,

Kellstedt,

Hillmyer

2024

Soft Matter

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Section: Resultsmentioning

confidence: 99%

Tough polycyclooctene nanoporous membranes from etchable block copolymers

Hoehn,

Kellstedt,

Hillmyer

2024

Soft Matter

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“…The ions were produced by a corona discharge device in a so-called needle-to-plate (NtP) configuration and fabricated in-house using 3D printing. Corona discharge is one of the most common techniques for production of ions at atmospheric pressure and has found numerous industrial applications in electrostatic coating and particle collection. − In a standard NtP corona ionizer, an electrical breakdown of a gas takes place in the vicinity of the needle’s tip, owing to application of a high electrical potential of a few kilovolts. Then, ions of the same polarity as that of the applied voltage travel toward the plate counter electrode, thus creating an ion flux, while those of opposite polarity flow through the needle (see Figure , inset in yellow rectangle).…”

Section: Resultsmentioning

confidence: 99%

Micromixing with In-Flight Charging of Polymer Solutions in a Single Step Enables High-Throughput Production of Micro- and Nanofibers

Modesto-López

Olmedo-Pradas

2022

ACS Omega

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Controlled ejection of liquids at capillary scales is a ubiquitous phenomenon associated with significant advances in, for instance, molecular biology or material synthesis. In this work, we introduce a high-throughput approach, which relies on a micromixing mechanism to eject and fragment viscous liquids, for production of microfibers from poly(vinyl alcohol) solutions. First, filaments were generated pneumatically with a so-called flow-blurring atomizer and using liquid flow rates of up to ∼1 L/min. Subsequently, the filaments were ionized online by corona discharge and consecutively manipulated with an electric field created by disc electrodes. Such charging of the filaments and the effect of the electric field allowed for their ultrafast elongation and diameter reduction from 150 μm down to fibers of 500 nm, which after collection exhibited fabric-like texture. The approach presented herein is a general procedure with potential for scalability that, upon proper adaptation, may be extended to various polymeric materials.

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“…Therefore it can be concluded that RF plasma is an effective cleaning technique, particularly in the removal inorganic surfaces contaminants. Levitin et al [60]..mentioned a number of advantages of Low-pressure plasmas that meet specific needs for metal conservation. They showed that, the plasma reduction was performed in several cycles; each cycle included exposure to a hydrogen plasma followed by mechanical removal of the remaining corrosion layer.…”

Section: Plasma Cleaningmentioning

confidence: 99%

Different Cleaning Techniques for Removal of Iron stain from Archaeological Bone Artifacts: A Review

2021

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Archaeological bone artifacts are found in different locations in Egypt, and they represent multiple values that should be preserved from different deterioration factors. Iron contamination is considered one of the most aspects of deterioration for bones extracted from excavation areas. This study aims to make an integrated study for the first time on the formation of iron rust stain on archaeological bones, explain the aspects and mechanism of its deterioration, explain traditional and advanced techniques of cleaning used for stain removal, and presents the analysis and investigations used to explain the deterioration mechanism or evaluate the materials and methods used in this process. The nature and formation of iron stain and its effect on archaeological bone components were explained. The cleaning techniques (mechanical, chemical, laser, and plasma) for removing it were discussed. Some analyses and investigations [such as different types of microscopes, X-ray fluorescence, Atomic absorption, fourier transform infrared (FTIR) spectroscopy, etc.] that can be used in this process were mentioned. The results confirmed that iron is present within sediments can lead to the breakdown of collagen. It can cause an increase in the porosity of bone artifacts. Hydroxyapatite can undergo alterations such as ionic exchange, cationic exchange, and substitution of phosphate with carbonate. All cleaning techniques have many advantages and some disadvantages. The choice of method for cleaning of iron rust stain depends on the condition and size of the bone piece, and on the thickness and nature of the iron stain.

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Plasma Cleaning for Electronic, Photonic, Biological, and Archeological Applications

Cited by 10 publications

References 126 publications

Tough polycyclooctene nanoporous membranes from etchable block copolymers

Tough polycyclooctene nanoporous membranes from etchable block copolymers

Micromixing with In-Flight Charging of Polymer Solutions in a Single Step Enables High-Throughput Production of Micro- and Nanofibers

Different Cleaning Techniques for Removal of Iron stain from Archaeological Bone Artifacts: A Review

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