DC Field | Value | Language |
---|---|---|
dc.contributor.author | Low, Mun Ji | ko |
dc.contributor.author | Lee, Hyub | ko |
dc.contributor.author | Lim, Chin Huat Joel | ko |
dc.contributor.author | Sandeep, C. S. Suchand | ko |
dc.contributor.author | Murukeshan, Vadakke Matham | ko |
dc.contributor.author | Kim, Seung-Woo | ko |
dc.contributor.author | KIm, Young-Jin | ko |
dc.date.accessioned | 2020-10-16T00:55:32Z | - |
dc.date.available | 2020-10-16T00:55:32Z | - |
dc.date.created | 2020-10-06 | - |
dc.date.created | 2020-10-06 | - |
dc.date.issued | 2020-10 | - |
dc.identifier.citation | APPLIED SURFACE SCIENCE, v.526, pp.146647 | - |
dc.identifier.issn | 0169-4332 | - |
dc.identifier.uri | http://hdl.handle.net/10203/276627 | - |
dc.description.abstract | Direct laser writing has emerged as a promising technology for facile and cost-effective single-step manufacturing of laser-induced reduced-graphene-oxide (LIRGO). Since LIRGO's optical properties can be controlled during photoreduction process, laser-patterned micro-optics can work as light-weight diffractive optical elements over conventional bulk refractive optics. Here, we present ultra-thin diffractive LIRGO micro-optics patterned by femtosecond laser direct writing (FsLDW) with high spatial resolution and wide design flexibility based on the wide parametric tunability of femtosecond pulsed lasers over conventional continuous-wave or long-pulsed lasers. By extensive parametric control of average power (10-120 mW), pulse repetition rate (1-500 kHz) and scan speed (1-100 mm/s) in FsLDW, ultra-thin micro-optics were patterned at three patterning regimes: non-thermal photoreduction regime, thermal photoreduction regime, and ablation regime. The optical performances of Fresnel zone plates (FZP) fabricated under the three regimes were evaluated and compared; the results were 0.7%, 2.4%, and 3.8% for focusing efficiency, 12.2 mu m, 13.2 mu m, and 12 mu m for focal spot size, 1.39 mm, 1.89 mm, and 1.77 mm for depth-of-focus for FZPs designed to 15 mm focal length with 10 concentric rings. This fabrication technique provides wide design flexibility to various planar LIRGO micro-optics for microfluidics, lab-on-a-chip, skin-attachable biomedical imaging, and micro photonic devices. | - |
dc.language | English | - |
dc.publisher | ELSEVIER | - |
dc.title | Laser-induced reduced-graphene-oxide micro-optics patterned by femtosecond laser direct writing | - |
dc.type | Article | - |
dc.identifier.wosid | 000566971100005 | - |
dc.identifier.scopusid | 2-s2.0-85085502636 | - |
dc.type.rims | ART | - |
dc.citation.volume | 526 | - |
dc.citation.beginningpage | 146647 | - |
dc.citation.publicationname | APPLIED SURFACE SCIENCE | - |
dc.identifier.doi | 10.1016/j.apsusc.2020.146647 | - |
dc.contributor.localauthor | Kim, Seung-Woo | - |
dc.contributor.localauthor | KIm, Young-Jin | - |
dc.contributor.nonIdAuthor | Low, Mun Ji | - |
dc.contributor.nonIdAuthor | Lee, Hyub | - |
dc.contributor.nonIdAuthor | Lim, Chin Huat Joel | - |
dc.contributor.nonIdAuthor | Sandeep, C. S. Suchand | - |
dc.contributor.nonIdAuthor | Murukeshan, Vadakke Matham | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Graphene oxides | - |
dc.subject.keywordAuthor | Diffractive micro-optics | - |
dc.subject.keywordAuthor | Reduced graphene oxide | - |
dc.subject.keywordAuthor | Fresnel zone plate | - |
dc.subject.keywordAuthor | Femtosecond laser direct writing | - |
dc.subject.keywordPlus | REDUCTION | - |
dc.subject.keywordPlus | FABRICATION | - |
dc.subject.keywordPlus | PHOTOREDUCTION | - |
dc.subject.keywordPlus | POWER | - |
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