MARC details
| 000 -LEADER |
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| fixed length control field |
03352ntm a2200337 i 4500 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
MY-KuUP |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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| control field |
20251125111041.0 |
| 006 - FIXED-LENGTH DATA ELEMENTS--ADDITIONAL MATERIAL CHARACTERISTICS |
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t||||fr|||| 000 0 |
| 007 - PHYSICAL DESCRIPTION FIXED FIELD--GENERAL INFORMATION |
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| fixed length control field |
ta |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
250515t20252025my a|||fr|||| 000 0 eng d |
| 020 ## - INTERNATIONAL STANDARD BOOK NUMBER |
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| International Standard Book Number |
THE0010073 (Local) |
| Qualifying information |
Hardback |
| 040 ## - CATALOGING SOURCE |
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| Original cataloging agency |
UMPSA |
| Language of cataloging |
eng |
| Transcribing agency |
UMPSA |
| Description conventions |
rda |
| 090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) |
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| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) |
FTKPM .M87 2025 r Thesis |
| 100 0# - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Raja Murfiqah Raja Mohamad Fouzy, |
| Relator term |
author. |
| 245 10 - TITLE STATEMENT |
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| Title |
Investigation of microlens array (MLA) replicated on polymer and glass substrates using partial filling hot embossing assisted with CO2 laser irradiation / |
| Statement of responsibility, etc. |
Raja Murfiqah Binti Raja Mohamad Fouzy |
| 264 #1 - PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE |
|---|
| Place of production, publication, distribution, manufacture |
Kuantan, Pahang : |
| Name of producer, publisher, distributor, manufacturer |
UMPSA , |
| Date of production, publication, distribution, manufacture, or copyright notice |
2025 |
| 264 #4 - PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE |
|---|
| Date of production, publication, distribution, manufacture, or copyright notice |
© 2025 |
| 300 ## - PHYSICAL DESCRIPTION |
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| Extent |
xvii, 142 pages : |
| Other physical details |
illustrations ; |
| Dimensions |
30 cm. + |
| Accompanying material |
1 CD-ROM |
| 336 ## - CONTENT TYPE |
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| Source |
rdacontent |
| Content type term |
text |
| 337 ## - MEDIA TYPE |
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| Source |
rdamedia |
| Media type term |
unmediated |
| 338 ## - CARRIER TYPE |
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| Source |
rdacarrier |
| Carrier type term |
volume |
| 347 ## - DIGITAL FILE CHARACTERISTICS |
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| Source |
rda |
| File type |
text file |
| Encoding format |
PDF |
| 500 ## - GENERAL NOTE |
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| General note |
Faculty of Manufacturing & Mechatronics Engineering Technology |
| 502 ## - DISSERTATION NOTE |
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| Dissertation note |
Thesis (Doctor of Philosophy) -- Universiti Malaysia Pahang – 2025 |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE |
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| Bibliography, etc. note |
Includes bibliographical references |
| 520 3# - SUMMARY, ETC. |
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| Summary, etc. |
Micro/nanostructures are essential in advanced technologies across industries such as biomedical, electronics, imaging, and optics. This study explores the integration of partial filling hot embossing (PFHE) with CO₂ laser irradiation for fabricating microlens arrays (MLAs) on polymer and glass substrates. The CO₂ laser eliminates the need for preheating, soaking, holding, and cooling steps, reducing thermal cycle time from 15 minutes to under 10 seconds. This approach enhances efficiency and reduces costs compared to conventional hot embossing. Conventional hot embossing experiments demonstrated that temperature, pressing load, and holding time significantly influence replication quality. Elevated temperatures soften thermoplastic materials like PMMA, improving mold filling through reduced viscosity. An optimal pressing load (1 MPa) ensures complete mold cavity filling, while insufficient load leads to incomplete formation. Similarly, holding time of 6 minutes produces precise MLA features by allowing thorough material flow, compared to inadequate results at shorter durations. The PFHE method with CO₂ laser irradiation leverages silicon molds' high transmittance and PMMA's strong optical absorption at a 10.6 μm wavelength. Optimized parameters— laser power (30 W), scanning speed (100 mm/s), and irradiation time (9 s)—achieve MLAs with lens diameters of 100 μm, 300 μm, and 500 μm, alongside a smooth surface finish (roughness of 0.032 μm). Lower power levels, insufficient irradiation times, or high scanning speeds result in incomplete patterns, while prolonged heating at slower scanning speeds (50 mm/s) causes deformation. This approach not only addresses challenges of conventional hot embossing but also enhances mold durability and process efficiency. The PFHE with CO₂ laser irradiation offers a fast, low-cost, and highthroughput solution for MLA fabrication, demonstrating strong potential for industrial applications and significant cost savings. |
| 610 20 - SUBJECT ADDED ENTRY--CORPORATE NAME |
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| Corporate name or jurisdiction name as entry element |
Faculty of Manufacturing & Mechatronics Engineering Technology |
| General subdivision |
Dissertations |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Universities and colleges |
| General subdivision |
Dissertations |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Theses |
| General subdivision |
Dissertations |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
|---|
| Source of classification or shelving scheme |
Library of Congress Classification |
| Koha item type |
Thesis |