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Dissertations / Theses on the topic 'Micro-holes'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Zhang, Yan. "Inkjet etching of micro-via holes in thin polymer layers." Thesis, Loughborough University, 2014. https://dspace.lboro.ac.uk/2134/14201.

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Facilitated by the development of various direct-write techniques and functional polymeric materials including polymer based conductors and semiconductors, printed electronics are flourishing both commercially and as a research topic. This is not only because of their simpler manufacturing routes and lower cost, but also as a result of lower processing temperatures and better compatibility with flexible substrates, compared with conventional electronics. The development of conventional electronics has been guided by Moore s Law, the driver for which lies in the demand for electronic devices wi

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2

Powell, Rock Allen. "On-line depth measurement of micro-scale laser drilled holes." Diss., Rolla, Mo. : Missouri University of Science and Technology, 2009. http://scholarsmine.mst.edu/thesis/pdf/Powell_09007dcc806b6dfc.pdf.

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Thesis (M.S.)--Missouri University of Science and Technology, 2009.<br>Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed August 14, 2009) Includes bibliographical references (p. 16-17).

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3

Moreno, Oscar Ray. "Investigation and development of oil-injection nozzles for high-cycle fatigue rotor spin test." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2005. http://library.nps.navy.mil/uhtbin/hyperion/05Mar%5FMoreno.pdf.

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Thesis (M.S. in Mechanical Engineering)--Naval Postgraduate School, March 2005.<br>Thesis Advisor(s): Raymond Shreeve, Garth Hobson. Includes bibliographical references (p. 91-93). Also available online.

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4

Chen, Shou-Wei, and 陳紹維. "Studies on Manufacturing Electrode and Micro Holes with Micro-EDM." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/95950124339812497007.

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碩士<br>國立雲林科技大學<br>機械工程系碩士班<br>95<br>This research utilizes 4-axis EDM machine to discussion and carry out experiment . This research is divided into three stages to proceed： Initial stage：Measuring the 4-axis EDM machine properties and doing experiment to investigate discharge gap and wear of electrode . Middle stage：Manufacturing electrode with bulk electrode . Last stage： Studying the white layer of a surface machined by micro-EDM . From the experimental results , the size of discharge gap is proportional to the peak current and pulse duration . And the electrode wear is proportio

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5

Chen, Yi-Cheng, and 陳易呈. "An Investigation of Micro Molding for Micro Through Holes Plates." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/52156717125549652416.

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碩士<br>國立雲林科技大學<br>機械工程系碩士班<br>91<br>In this study, UV-LIGA technique was developed to fabricate the micro mold for inkjet print nozzle plates. Such micro molding process to manufacture nozzle plates is expected to substitute the existing laser machining method because of lower cost of molding machines. Number of innovative idea are implemented into mold design, manufacture and molding process. Micro core pins were made by the UV-LIGA process and were used as electrodes to create micro holes in the following EDM process. Since micro holes were made by the micro core pins, it ensured the ali

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6

Hung, Jung-Chou, and 洪榮洲. "Study of Micro-holes Machining Using Micro-EDM Combined with Electropolishing." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/85012304866525743115.

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碩士<br>國立中央大學<br>機械工程研究所<br>92<br>Abstract Micro-holes with diameter less than 100μm can be effectively fabricate by micro-EDM in micro-machining. But using micro-EDM to manufacture micro-holes on metal plate, the recast layer include micro-crack and crater was formed on the hole-wall will lead to poor surface roughness to affect quality of micro-hole seriously. For this reason, the Hymu-80 was chosen as the workpiece material in this study, using micro-EDM combined with electropolishing to machine micro-holes. It expected to improve the quality of micro-holes after EDM to satisfy the precision

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7

Wang, Sen-De, and 王森德. "A Research on Technology of Micro Noncircular Holes and Micro Forming." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/61633949002015540462.

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碩士<br>國立雲林科技大學<br>機械工程系碩士班<br>91<br>Machining of micro and precise holes is a key point of developing new products in various fields of industry. We study and discuss three kinds of technology of noncircular micro-holes. Vibration-EDM: Because the tool is motionless when machining noncircular micro-hole, so we must use vibration-EDM technology to machine noncircular die-hole, and introduce the technology that can increase the rate of machining and obtain more discharged energy to remove the workpiece in order to machine noncircular die-hole. Micro punching technology: The noncircular die-hole

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8

Chu, Wen-Chang, and 朱文章. "The Etching Holes Effects on Capacitive Micro-Devices." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/23572789268871368086.

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碩士<br>國立臺灣大學<br>應用力學研究所<br>100<br>In many MEMS devices, movable suspension structure is the most important design to achieve sensing or actuating function. Etching the sacrificial layer under the microstructure is a common method to release structure. For the device which has large area, it is necessary to design a large number of etching holes to enable the etchant to etch sacrificial layer completely. However, the etching holes will result in many physical characteristics changes. For capacitive micro-devices, etching holes cause the decreasing of capacitance and induce fringe capacitance, w

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9

Mishra, Himanshu. "Modeling and Optimization of Micro-EDM Operation for Fabrication of Micro Holes." Thesis, 2017. http://ethesis.nitrkl.ac.in/8496/1/2017-PhD-HMishra-511ME134.pdf.

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Based on the experimental results, an analysis was made to identify the performance of various electrodes during fabrication of micro holes considering Inconel 718 as well as titanium as workpiece materials. It was found that that platinum followed by graphite and copper as electrode material exhibited higher MRR for both the workpiece materials but on the other hand platinum showed higher values of OC, RCL and TA respectively when compared to graphite and copper. The variation of temperature distribution in radial and depth direction with different process parameters has been determined for I

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10

Liang, Hui-Yuan, and 梁輝源. "Fabrication of matrix Micro-Holes Using A Hybrid Process Integrated Micro-EDM and Micro-punching." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/14712930379376368115.

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碩士<br>國立雲林科技大學<br>機械工程系碩士班<br>91<br>This paper describes a hybrid process system to integrate of micro-electro discharge machining (micro-EDM) and micro-punching that uses electrode arrays to achieve high throughput and in the machining. It explores constraints on the fabrication and usage of high aspect ratio micro-EDM fabricated electrode arrays. An array of 36 WC electrodes with 90 μm diameter was used to machine perforations in 100μm thick Cu plank.The electrode arrays can be applied to micro-punching that be used to punching with thermo-plastic material.

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11

Lin, Jeng-Feng, and 林正豐. "A study of manufacturing technology of micro-nano electrode and array micro-holes." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/k6am34.

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碩士<br>國立虎尾科技大學<br>動力機械工程研究所<br>94<br>The copper material has good conductiving but to be short of stiffness, it can''t be adapted for the machining of microelectrode. In this study,of high strength and hardness, tungsten carbide material was selected as electrode in experiments which was machined by a combined sequence process of electrochemical anodic etching, ultrasonic aided machining, and precision grinding. Ionized particles of the anode can be effectively removed by the agitation of an ultrasonic mechanism during electrolysis. In addition, “edge effect” can be improved by

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12

Lu, Zhi-Hong, and 盧致宏. "Study of Quality Improvement of Glass Micro-holes by ECDM." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/67171125394710452715.

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碩士<br>國立中央大學<br>機械工程研究所<br>94<br>Abstract Electrochemical Discharge Machining(ECDM) are usually applied in machining of non-conductor material such as glass. The micro-hole machined by ECDM can obtain good surface roughness, but the shape is poor because of the enlargement of entrance and exit. In this paper, we use stepped electrode to grind the micro-hole mechanically after ECDM, and use electrophoresis deposition grinding(EPDG) to improve the surface roughness. According to the results of experiment, mechanical grinding with stepped electrode can make the shape of micro-hole almost tota

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13

Huang, Shih-Wei, and 黃士瑋. "Use Electrophoretic deposition combined with micro ultrasonic grinding to enhance the precision of micro holes." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/22369974407893326508.

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碩士<br>國立中央大學<br>機械工程研究所<br>91<br>Drilling micro hole with micro-electric discharge machining (Micro-EDM) is an economic machining method. However, because of the electrode wearing, the precision of micro hole is not well enough. For solving this problem, we combined Micro-EDM, electrophoretic deposition (EPD) and ultrasonic vibration grinding to get high precision shaft with better inner surface. Before experiment, we searched the best parameters of EPD first. Because loose abrasive grains are attracted to grinding tool (electrode) and fixed on the tool surface by EPD, this phenomenon wil

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14

Wang, A.-Cheng, and 王阿成. "Study of high precision compound technology of micro-holes and micro-slits and machining characteristic research." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/51130097379035117139.

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博士<br>國立中央大學<br>機械工程研究所<br>92<br>High precision micro-holes and micro slits are an important target that can be made in the micro-electro-mechanical systems (MEMS). Therefore, the main purpose of this thesis is to develop an economical and effective method to produce high accuracy micro-holes and micro slits. A compound or batch mode method was introduced to our researches. Furthermore, the high precision micro-holes were successfully fabricated in the metal or glass by the compound method, and the batch mode method was an efficient method to manufacture a micro slit die. A micro heat sink can

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15

Choubey, Mayank. "Modeling of Vibration Assisted Micro Electrical Discharge Machining for Fabrication of Micro Holes in Inconel 718." Thesis, 2019. http://ethesis.nitrkl.ac.in/10067/1/2019_PhD_MChoubey_512ME6047_Modeling.pdf.

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Owing to the increasing trend towards miniature and lightweight components for various applications, manufacturing industries are developing new technologies to meet the unique challenges posed by micro manufacturing. Fabrication of micro-sized components using micro-EDM is one of the significant steps towards miniaturization. The inherent characteristic of micro-EDM is the capability of machining of three-dimensional complex micro-components used in biomedical, optical, aerospace, automobile, and electronics industries. Due to the high accuracy of machined parts and lower machining cost, micr

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16

Luo, Tsu-Sheng, and 羅智昇. "Fabrication of Micro Holes Array by Precision Filled Wax Metal Deposition." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/5r7txz.

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碩士<br>國立臺灣師範大學<br>機電科技研究所<br>97<br>The major purpose of the study presents a novel fabrication approach for machining micro holes array—“Precision Filled Wax Electroforming”. A set of micro holes array with 170 µm diameter is fabricated using micro processes that including micro EDM hole-drilling, filling sacrificial material, precision electroforming and stripping. First of all, the substrate that is made of mirror SUS304 is EDM drilling, then, the softened wax in the guide tube is extruded through the micro holes on the substrate. The wax is formed with micro precision cylindrical shape. The

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17

Huang, Chien-Yao, and 黃建堯. "Research of concave sphere electrode and special-shaped micro-holes fabrication technology." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/98321109546711358859.

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18

洪健翔. "Optical Diffraction of Etch-Holes Array on Free-Space Micro Optical Devices." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/59690987414358388411.

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19

Tsai, Shen-Chang, and 蔡森章. "A Study of Thin film and Micro Injection/Compression Molding for Elements with Micro Structures or Though-Holes." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/55060360561306857149.

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碩士<br>國立雲林科技大學<br>機械工程系碩士班<br>90<br>Thin film and micro injection/compression molding techniques were developed in this study to fabricate fiber spinnerets, micro grooves and ink jet printer nozzle plates. Precision is extremely important for precision micro parts and is directly related to shrinkage in plastic injection/compression molding. In order to understand the effects of different processing conditions on the shrinkage of molded parts, Taguchi’s method of experiments was conducted in this work. Optimal processing condition was then achieved. For fiber spinneret, flow balance

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20

Yang, Ying-Tsung, and 楊英琮. "A Study of Development of Micro fluidics -Chips with Micro Channels and Through Holes by LIGA and Thermoplastic Injection Molding." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/41645522885762119873.

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碩士<br>國立雲林科技大學<br>機械工程系碩士班<br>93<br>This study focus on manufacturing bio-chips within micro channels and through holes. It is an integration of UV-LIGA and micro molding processes. The micro mold has been designed and analyzed by the mold filling simulation first. In order to mold a plate with through holes, the mold should have micro pillars in one side and mapping micro holes in the other side. The micro pillar array can be fabricated by the UV-LIGA, and later it would be used to manufacture micro holes in the other mold half by M-EDM. Micro injection molding was used to produce low-cost，hi

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21

Hsieh, I.-Chih, and 謝一志. "Visualization of In-Mold Constraint to Affect Shrinkage of Micro Holes during Injection Molding." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/48585356791596364809.

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碩士<br>國立雲林科技大學<br>機械工程系碩士班<br>94<br>The objective of this study is to use a real time visualization technique to observe the effects of in-mold constraint on the shrinkage of a through hole array. Such a hole array can used in optical communication or optoelectronics applications. Precision control of roundness and position accuracy of the hole arrays are extremely important and directly related to diameter and pitch shrinkage of the hole arrays. In order to have through holes, pins are assembled within the cavity and result in anisotropic shrinkage of the through holes, or so called in-mold c

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22

hsu, Chiming, and 徐啟敏. "Investigation on Microdrilling Phenomenon of SUS 304 Stainless Steel and Deburring of Micro-holes." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/267bxt.

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碩士<br>國立臺北科技大學<br>製造科技研究所<br>94<br>Micro-holes are widely used in various industrial fields such as inkjet printer heads, diesel engine nozzles, spinning nozzles. Considering varieties of materials, some machining methods such as drilling, EDM, LBM, WJM could be selected to fabricate tiny small holes. Micro mechanical drilling is one of the technologies widely used to drill micro holes on stainless steel because micro mechanical drilling is easier to get a good roundness and straightness hole in a short machining time. However, some parameters such as feeding rate, rotation speed and drilling

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23

Chuang, Yin, and 莊殷. "A Research on the Mechanism of Viration-EDM and Technology of Mass Manufacturing of Micro Holes." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/62349874447654110960.

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碩士<br>國立雲林科技大學<br>機械工程系碩士班<br>90<br>In this research, vibration machining has been applied to the micro-EDM to make the workpiece vibrate in the vertical direction, which helps us to machine noncircular holes. Through the analysis of discharge energy, signals of RC discharge circuit and machining surface, both of the mechanisms of vibration-EDM and the performances of machining are discussed. In the research of technology of mass manufacturing of micro hole, the micro punching technology is utilized, which has the advantages of mass productivity, easy manufacturing and low cost to punch masses

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24

Cheang, Jia-Kang, and 鄭家康. "Fabricating High Aspect Ratio Silicon Micro-Holes Implemented by Metal-Assisted Chemical Etching with Taguchi Analysis." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/24768390488648287008.

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碩士<br>國立清華大學<br>材料科學工程學系<br>102<br>High aspect ratio (AR) Silicon base structure plays an important role in semiconductor industry. Recent advances in small size and multifunctional chip has made the increased demands of fabrication of micro and nano scale high AR silicon structure. However, the commercial fabricating method, deep reactive ion etching (DRIE) suffers from high cost and complex processing due to the high maintenance fees and complicated set up. In contrast, we investigate the ability of promising novel chemical etching, metal assisted chemical etching (MACE) that can etch Silico

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25

Kowsari, Kavin. "The Effects of Dilute Polymer Solutions on the Shape, Size, and Roughness of Abrasive Slurry Jet Micro-machined Channels and Holes in Brittle and Ductile Materials." Thesis, 2013. http://hdl.handle.net/1807/42988.

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The present study investigated the effect of dilute polymer solutions on the size, shape, and roughness of channels and holes, machined in metal and glass using a novel abrasive slurry-jet micro-machining (ASJM) apparatus. The apparatus consisted of a slurry pump and a pulsation damper connected to an open reservoir tank to generate a 140-micron turbulent jet containing 1 wt% 10-micron alumina particles. With the addition of 50 wppm of 8-M (million) molecular weight polyethylene oxide (PEO), the widths of the channels and diameters of holes machined in glass decreased by an average amount of 2

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