Fabrication of the Plasma-Chemical Indicator Strip for the Detection of Plasma Processing Effects

Ihara, Tatsuhiko; Katsura, Masato; Ohshiro, Seisaku; Nakamura, Keiko

doi:10.2494/photopolymer.25.539

Cited by 3 publications

(6 citation statements)

References 7 publications

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“…We also found in the previous report [1] that the ordering of weight loss (wt%) in Az-R and Ph-G was H 2 O plasma > 30% H 2 O 2 plasma for both colorants. This suggests that the number of ･OH formed is larger in H 2 O plasma than in H 2 O 2…”

Section: Introductionsupporting

confidence: 84%

“…Plasma treatment of PCI with different plasma gas source was carried out in the same manner as described elsewhere in our previous report [1] using the same bell-jar type of plasma reactor (Samco). Table 3.…”

Section: Plasma Irradiation Experimentsmentioning

confidence: 99%

“…In the previous report [1], PCI of sensitive and distinguishable to 30% H 2 O 2 and O 2 plasma was fabricated by screen printing on a PET sheet using printing ink prepared on the bases of composition of ordinary gravure ink in which two different colorants, red azo-dye (Az-R) and green phthalocyanine pigment (Ph-G) and nitro cellulose (NC) and polyamide (PA) resins as binder were used. When PCI was treated by H 2 O 2 and H 2 O plasma, the color continuously shifted from the purple of control PCI toward dull light green and light bluish green respectively during 15 minutes of treatment time by the action of ･ OH formed.…”

Section: Introductionmentioning

confidence: 99%

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Fabrication of the Plasma-Chemical Indicator and It’s Application

Ohshiro

Katsuto

Satahira

et al. 2013

J. Photopol. Sci. Technol.

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In order to confirm the plasma processing effect at a required point by visual observation, the plasma-chemical indicator (PCI) was fabricated. In this research, the effects of NC and PA on discoloration properties of PCI was examined, since the color of prepared printing ink was fairly affected by the kind of binder. Viscosity effects of these binders on the sensitivity of PCI were also investigated. As an Application of PCI, the 3D mapping was created by the color difference E*ab obtained by 15 min of H O plasma irradiation using 25 pieces of PCI. 2 It was found that the influence of viscosity on change of color is small, comparing with the influence by the kind of binder. The expansion effect of an indicator range was able to be confirmed for H 2 O and H 2 O 2 plasma, but not for O 2 plasma. The optimal mixing ratio of NC and PA for H 2 O and H 2 O 2 plasma was 5 and 15 wt/wt, respectively. 3D mapping which visualized the situation was well in agreement with the visual observation results.

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Section: Introductionsupporting

confidence: 84%

Section: Plasma Irradiation Experimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fabrication of the Plasma-Chemical Indicator and It’s Application

Ohshiro

Katsuto

Satahira

et al. 2013

J. Photopol. Sci. Technol.

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show abstract

“…In order to develop a new plasma diagnosis method by which the plasma condition can be diagnosed by a simple method such as the discoloration of the paper-like indicator caused by the reaction of the plasma, just like a pH test paper, we previously proposed the plasma chemical indicator (PCI) [1][2][3]. PCI is a piece of PET (polyethylene terephthalate) sheet strip on which a color indication mark is printed using ink that discolors through plasma chemical action.…”

Section: Introductionmentioning

confidence: 99%

Visualization Plasma Diagnosis Indicator Using Discoloration Reaction of Au and Pt Ions

Satahira

Ohshiro

Nakamura

et al. 2015

J. Photopol. Sci. Technol.

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“…In a previous report [1,2], the sensitivity of PCI was distinguishable to 30% H 2 O 2 and O 2 plasma was fabricated by screen printing on a PET sheet using printing ink prepared on the bases of composition of ordinary gravure ink in which two different colorants, red azo-dye (Az-R) and green phthalocyanine pigment (Ph-G) and nitro cellulose (NC) and polyamide (PA) resins as binder were used. When the PCI was exposed to H 2 O 2 and H 2 O plasma, the color continuously shifted from the purple of control PCI toward dull light green and light bluish green respectively during 15 minutes of processing time with the action of •OH.…”

Section: Introductionmentioning

confidence: 99%