Formation of a TiO<sub>2</sub> Micronetwork on a UV-Absorbing SiO<sub>2</sub>-Based Glass Surface by Excimer Laser Irradiation

Narazaki, Aiko; Kawaguchi, Yuji; Niino, Hiroyuki; Shojiya, Masanori; Koyo, and Hirotaka; Tsunetomo, Keiji

doi:10.1021/cm0518372

Cited by 16 publications

(9 citation statements)

References 17 publications

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“…We confirmed that the TiO 2 micronetworks were precipitated in the rutile crystalline phase and that they exhibited photocatalytic capability [8]. Utilizing this technique, we can make patterning of crystalline TiO 2 micronetworks on glass surfaces without the application of any heat treatments and/or adhesives.…”

Section: Introductionsupporting

confidence: 57%

Laser-induced formation of photocatalytic TiO 2 micro networks on a UV-absorbing glass surface

et al. 2007

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Laser-induced formation of functional materials from glasses has a great potential for creation of monolithic and highperformance glass-based devices, such as optical circuit and micro-TAS. We have recently developed a laser-induced formation technique of photocatalytic titanium oxide on a UV-absorbing TiO 2 -SiO 2 -based glass surface by excimer laser irradiation under a specific condition, which we term laser-induced superficial phase separation. The laser-induced structure has the shape of micro-cones, growing into micro-sized network after accumulating laser pulses, which we call TiO 2 micronetwork. The TiO 2 micronetwork exhibited the rutile crystalline phase and photocatalytic ability. Moreover, the crystalline phase can be controlled from the rutile to the anatase by post-treatments. Utilizing this technique, we were able to make a site-selective growth of TiO 2 micronetworks: a microwell array and a microchannel modified with the TiO 2 network only on the bottom. This flexible formation of photocatalytic TiO 2 onto a glass surface without any heattreatments and/or adhesives opens a new way to develop a monolithic glass device like micro-fluidics with lightcatalyzed reactions.

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Section: Introductionsupporting

confidence: 57%

Laser-induced formation of photocatalytic TiO 2 micro networks on a UV-absorbing glass surface

et al. 2007

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“…The photoinduced phase transformation of orthorhombic CdS nanoparticles is spectrally selective; the nanoparticles change to the hexagonal form during irradiation by light with l = 355 nm and to the cubic form with l = 532 nm [286,287]. It was found that the crystallization of amorphous TiO 2 [77,288] and Ge [289] nanoparticles takes place under the influence of laser light.…”

Section: Formation Of Semiconductor Nanoparticles and Change Of Theirmentioning

confidence: 99%

“…[74][75][76][77][78][79][80][81][82]. Thus, during the irradiation of a dimethylsiloxane and styrene block copolymer with UV light on the surface of the nanostructured TiO 2 films selective oxidation of the polystyrene sections occurs, and the polysiloxane is simultaneously transformed into SiO 2 nanoparticles, leading to the formation of periodic silica structures on the surface of the TiO 2 film [74].…”

Section: Photochemical Production Of Nanostructured Metal Oxidesmentioning

confidence: 99%

Photochemical formation of semiconducting nanostructures

et al. 2008

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Existing data on photochemical and photocatalytic approaches to the formation of semiconducting nanoparticles and also binary semiconducting nanostructures and nanocomposites of semiconductors with metals and polymers are reviewed. The nature of the effect of irradiation on the synthesis and properties of the obtained nanostructures and the possibility of photocatalytic control of the structural and spectral parameters of nanostructural semiconducting systems are examined.The accumulation of data on the properties of semiconducting (SC) nanomaterials, which has occurred particularly rapidly in the last 7-10 years, has opened up ever more alluring prospects for their application as light-sensitive and light-emitting components in nanophotonics [1-3], nanophotocatalysis [2,[4][5][6][7], biosensorics [8][9][10][11], and other important fields. The possibility of practical utilization is an important factor that has stimulated the search for and study of the processes involved in the formation of nanomaterials. On this account an enormous number of publications have now accumulated on the improvement of existing and development of new methods for the synthesis of semiconducting nanoparticles and nanostructures (e.g., see the reviews [6, 12-15]). A special position among them is occupied by methods based on photochemical transformations conducted either for the purpose of synthesis and directing it along a desired path or for improving the characteristics of nanostructures produced by other methods.Photochemical methods of synthesis have proved more effective than the production of nanomaterials by traditional synthetic approaches, and in a number of cases only they make it possible to achieve the assigned aim. For this reason the synthesis of semiconducting nanostructures and their modification under the conditions of photoirradiation are constantly attracting the attention of investigators, and the number of publications devoted to these questions is constantly increasing. We note, however, that they nevertheless remain disjointed.In view of the foregoing an attempt is made in the present article to organize existing data, to identify the most important directions for research and development, and thus to assess the current state of development of photochemical approaches to the formation of semiconducting nanostructures. Analysis of data on the photochemical formation and post-synthesis photochemical treatment of semiconducting nanostructures and multicomponent nanocomposites, including the nanoparticles of metals and polymers in addition to semiconductors, showed that in spite of the variety and diversity of the proposed approaches all the papers can be ascribed to only three courses: synthesis, synthesis control, and changing the characteristics of the semiconducting nanostructures. For this reason in this review photochemical approaches to the synthesis of nanoparticles of metal chalcogenides, binary semiconducting nanostructures, and nanocomposites consisting of semiconducting and conducting polymers are examin...

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“…[1][2][3] Various oxide lms have been formed on polymer substrates to achieve their functionality. [4][5][6][7] In particular, patterning of oxide thin lms is of great signicance in the development of sensor arrays, 8 memory arrays, 9 integrated electronics, 10 solar cell, 11 and so forth. In general, the formation for such oxide thin lms should be conducted in mild conditions to remain the optical and mechanical properties of polymer substrate, therefore, the traditional micropatterning strategies involving erosive chemicals or high temperature conditions are no longer favoured.…”

Section: Introductionmentioning

confidence: 99%

Formation of submicron-sized silica patterns on flexible polymer substrates based on vacuum ultraviolet photo-oxidation

Soliman

Utsunomiya

et al. 2019

RSC Adv.

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Formation of a TiO₂ Micronetwork on a UV-Absorbing SiO₂-Based Glass Surface by Excimer Laser Irradiation

Cited by 16 publications

References 17 publications

Laser-induced formation of photocatalytic TiO 2 micro networks on a UV-absorbing glass surface

Laser-induced formation of photocatalytic TiO 2 micro networks on a UV-absorbing glass surface

Photochemical formation of semiconducting nanostructures

Formation of submicron-sized silica patterns on flexible polymer substrates based on vacuum ultraviolet photo-oxidation

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Formation of a TiO2 Micronetwork on a UV-Absorbing SiO2-Based Glass Surface by Excimer Laser Irradiation

Cited by 16 publications

References 17 publications

Laser-induced formation of photocatalytic TiO 2 micro networks on a UV-absorbing glass surface

Laser-induced formation of photocatalytic TiO 2 micro networks on a UV-absorbing glass surface

Photochemical formation of semiconducting nanostructures

Formation of submicron-sized silica patterns on flexible polymer substrates based on vacuum ultraviolet photo-oxidation

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Formation of a TiO₂ Micronetwork on a UV-Absorbing SiO₂-Based Glass Surface by Excimer Laser Irradiation