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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/50478完整後設資料紀錄
| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 陳永芳 | |
| dc.contributor.author | Yu-Ming Liau | en |
| dc.contributor.author | 廖佑銘 | zh_TW |
| dc.date.accessioned | 2021-06-15T12:42:27Z | - |
| dc.date.available | 2026-12-31 | |
| dc.date.copyright | 2016-10-14 | |
| dc.date.issued | 2016 | |
| dc.date.submitted | 2016-07-27 | |
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/50478 | - |
| dc.description.abstract | 隨機雷射比起傳統雷射擁有許多先天的優勢像是裝置可彎曲性、微小體積、低成本、設計簡單以及量產的可能性。隨機雷射已經在近十年成為非常熱門的研究領域。我們的隨機雷射標籤整合了隨意轉貼在各種非傳統基板的製程設計、可彎曲的材質以及溫度感測的功能於單一裝置。超薄隨機雷射標籤不僅僅可以持續穩定地在500 次以上拉伸壓縮100 %的嚴苛條件下繼續正常運作，甚至還可以用簡易的製程方法轉移到任意的基板不管是彎曲、非平面以及粗糙的材料上面。除了上面所述的功能之外，超薄隨機雷射標籤還可以用於人類體溫的感測。超薄隨機雷射標籤這樣的先進的光學裝置有很大的潛力在許多各式各樣的領域上運用。 | zh_TW |
| dc.description.abstract | Random lasers have abundant inherent advantages compared to conventional lasers such as flexibility, size, cost, simple design, and mass production. It has been the hot research topic in recent decades. An integrated random laser label with transferability, flexibility and temperature sensing is created and demonstrated in this work. The ultrathin stick-type random laser (USRL) can not only function stably under 100% strain with at least 500 times test but could also be easily transferred on arbitrary substrates disregard the material is rigid, flexible, non-planar or rough. In addition to features mentioned above, random laser signals could be stimulated and controlled repetitively within human body temperature. This shows great potential that the USRL can serve as photonics modules for further advanced developments of a variety of applications covering many different fields. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-15T12:42:27Z (GMT). No. of bitstreams: 1 ntu-105-R03222036-1.pdf: 2932770 bytes, checksum: 26c839e7ec40ea89076eeaacf8d91080 (MD5) Previous issue date: 2016 | en |
| dc.description.tableofcontents | 口試委員會審定書........................................................................................................... I 誌謝 ................................................................................................................................. II 中文摘要 ........................................................................................................................ IV Abstract ...........................................................................................................................V List of Publication......................................................................................................... VI Contents....................................................................................................................... VII List of Figures ............................................................................................................... IX Figure of chapter2................................................................................................. IX Figure of chapter3...................................................................................................X Figure of chapter4...................................................................................................X Chapter1 Introduction ................................................................................................... 1 Reference ................................................................................................................. 4 Chapter 2 Theoretical Background............................................................................... 6 2.1 Band Gap Structure ......................................................................................... 6 2.2 Photoluminescence (PL) ................................................................................... 9 2.3 Random Laser (RL)........................................................................................ 12 2.3.1 Mechanisms .............................................................................................. 12 2.3.2 Unique Characters................................................................................... 13 2.3.3 Application ............................................................................................... 14 (1) Optomicrofluidics ..................................................................................... 14 (2) Cancer diagnostic...................................................................................... 16 (3) Speckle free imaging................................................................................. 17 (4) On-chip random spectrometer................................................................... 19 (5) Next generation light source ..................................................................... 21 2.4 Fabry–P eacute;rot resonance .................................................................................. 22 Reference ............................................................................................................... 23 Chapter 3 Experimental Details .................................................................................. 25 3.1 Scanning Electron Microscopy (SEM).......................................................... 25 3.2 Random Laser Measurement ........................................................................ 27 Reference ............................................................................................................... 28 Chapter 4 ....................................................................................................................... 29 Transferable, Highly Stretchable and Ultrathin Label-like Random Laser on Universal Substrates..................................................................................................... 29 4.1 Introduction .................................................................................................... 29 4.2 Experimental Section ..................................................................................... 31 4.3 Result and Discussions ................................................................................... 32 4.4 Conclusion ....................................................................................................... 39 Reference ............................................................................................................... 50 Chapter 5 Conclusion ................................................................................................... 51 Figure 2. 1 Electronic band gap structure of metal, semiconductor, and insulator material........................................................................................... 8 Figure 2. 2 (a) A direct optical transition is drawn vertically with no change of k. (b) The indirect transition involves both a photon and a phonon. .......................................................................................................... 8 Figure 2. 3 Illustration of an electronic transition corresponding with absorption, spontaneous emission, and stimulated emission. ..................... 11 Figure 2. 4 (a) A 300 μm long pump stripe is translated along the length of the channel, varying d, to study the spectral sensitivity of the random lasing modes to the pumped region. The spectra recorded for three different values of d are plotted in (b)......................................................... 15 Figure 2. 5 (Color) Random laser emission spectra of human colon tissues infiltrated with a concentrated laser dye, namely R6G. (a) Two typical random laser emission spectra from a healthy, grossly uninvolved tissue (blue), of which microscopic image is shown in (b). The narrow spectral lines are in fact coherent laser emission modes. The inset shows schematically closed random laser resonators formed due to scatterers in the gain medium. (c) and (d), same as in (a) and (b), respectively, but for a malignant colon tissue. There are more lines in the laser emission spectra in (c) (red) that are due to more resonators in the tumor; these are caused by the excess disorder that is apparent in (d). ............................................. 16 Figure 2. 6 Random lasers, a new kind of light source for imaging. Light sources are compared in terms of the two parameters most relevant to full-field imaging: photon degeneracy/spectral radiance and spatial coherence. Random lasers represent a new class of light source with high photon degeneracy/spectral radiance and low spatial coherence—the ideal combination for full-field imaging.............................................................. 18 Figure 2. 7 SEM image of the fabricated spectrometer. The dispersive element is a semicircular array of randomly positioned air holes, surrounded by a photonic-crystal lattice. The probe signal is coupled to the random structure via a defect waveguide at the bottom of the semicircle. The light then diffuses through the random array via multiple scattering and eventually reaches the 25 defect waveguides around the circumference of the semicircle. These tapered waveguides will couple the signals to the doi:10.6342/NTU201601330 X detectors (not integrated). The distribution of intensities over the detectors is used to identify the input spectrum. The photonic-crystal boundary, which has a full bandgap in two dimensions, confines the probe light in the random structure and channels it efficiently into the defect waveguides. The insets in the bottom row are magnified images, and the scale bars indicate 1 mm. ............................................................................................. 20 Figure 2. 8 Schematic illustration of plane-parallel cavity. ....................... 22 Figure of chapter3 Figure 3. 1 Schematic diagram of a scanning electron microscope (SEM).26 Figure 3. 2 Picture of a scanning electron microscope (SEM). ................. 26 Figure 3. 3 Schematic illustration for the measurement of random lasing.27 Figure 3. 4 Picture of instrument for the measurement of random lasing. 28 Figure of chapter4 Figure 4. 1 Top view SEM image of ZnO nanoparticles. .......................... 40 Figure 4. 2 Schematic fabrication process of the USRL. ........................... 41 Figure 4. 3 Top view of the USRL separating from the silicon substrate and floating on the DI water. ....................................................................... 42 Figure 4. 4 (a) Evolution of emission peak intensity as a function of pumping energy on the silicon substrate. The inset is a schematic diagram showing the formation of closed-loop paths for light though multiple scattering by ZnO nanoparticles suspended in PMMA film. (b) Emission spectrum as a function of pumping energy for the USRL on the silicon substrate. (c) Evolution of emission peak intensity as a function of pumping energy on the PET substrate. The inset is the photograph of the sample (top view). (d) Emission spectrum as a function of pumping energy for the USRL on the PET substrate. ............................................................ 43 Figure 4. 5 Emission peak intensity as a function of the USRL under different emission angles from 25 to 65 degree. ......................................... 44 Figure 4. 6 (a-e) Demonstrations of the USRL labelled onto various non-conventional substrates with the corresponding evolution of emission peak intensity and emission spectrum as a function of pumping energy alongside, including on a glass bottle (a), a glove (b), a peelable Post-it flag (c), a scotch tape (d), a paper money (e). (The areas of the USRLs are about 1.5 cm2.)............................................................................................. 45 Figure 4. 7 (a) The USRL was clipped on the slide caliper under compressing from 0 % to 50 % and re-stretching from 0 % strain to 100 % strain, and the corresponding emission spectrum and evolution of emission doi:10.6342/NTU201601330 XI peak intensity as a function of pumping energy under different compression. (b) The SEM image of the USRL under pre-strain and after releasing pre-strain. ..................................................................................... 46 Figure 4. 8 Emission spectrum as a function of the USRL under different compressing cycles from 100 times to 500 times. ...................................... 47 Figure 4. 9 (a) Emission spectrum as a function of the USRL under different temperature. (b) Demonstrations of emission spectra of the USRL labelled onto glass bottle filled in dissimilar temperature water................. 48 Figure 4. 10 Emission spectrum as a function of the USRL under different temperatures. ............................................................................................... 49 | |
| dc.language.iso | en | |
| dc.subject | 可拉伸 | zh_TW |
| dc.subject | 可轉移 | zh_TW |
| dc.subject | 隨機雷射 | zh_TW |
| dc.subject | 氧化鋅奈米粒子 | zh_TW |
| dc.subject | 超薄 | zh_TW |
| dc.subject | 可彎曲 | zh_TW |
| dc.subject | Ultrathin | en |
| dc.subject | Random Lasers | en |
| dc.subject | Stretchable | en |
| dc.subject | Transferrable | en |
| dc.subject | Flexible | en |
| dc.subject | ZnO Nanoparticles | en |
| dc.subject | Ultrathin | en |
| dc.subject | Random Lasers | en |
| dc.subject | Stretchable | en |
| dc.subject | Transferrable | en |
| dc.subject | Flexible | en |
| dc.subject | ZnO Nanoparticles | en |
| dc.title | 可轉貼可高度拉伸超薄隨機雷射標籤在各種基板之光 學研究分析與應用演示 | zh_TW |
| dc.title | Transferable, Highly Stretchable and Ultrathin Label-like Random Laser on Universal Substrates | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 104-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 林泰源,許芳琪 | |
| dc.subject.keyword | 隨機雷射,可拉伸,可轉移,可彎曲,氧化鋅奈米粒子,超薄, | zh_TW |
| dc.subject.keyword | Random Lasers,Stretchable,Transferrable,Flexible,ZnO Nanoparticles,Ultrathin, | en |
| dc.relation.page | 51 | |
| dc.identifier.doi | 10.6342/NTU201601330 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2016-07-27 | |
| dc.contributor.author-college | 理學院 | zh_TW |
| dc.contributor.author-dept | 物理學研究所 | zh_TW |
| 顯示於系所單位： | 物理學系 | |
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