Thermoplastic microchannel fabrication using carbon dioxide laser ablation

Wang, Shau‐Chun; Lee, Chia-Yu; Chen, Hsiao-Ping

doi:10.1016/j.chroma.2005.10.039

Cited by 33 publications

(13 citation statements)

References 17 publications

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“…Microchannels were produced using a direct writing single pass laser ablation technique rather than multiple laser passes, as was applied in previous work [8]. Due to the controllability of the profiles fabricated, these microchannels can be designed a priory in order to take advantage of specific channel dimensions in applications such as MEMS and cell growth.…”

Section: Resultsmentioning

confidence: 99%

“…Micro-channel fabrication, on the surface or in the bulk of glass sheets is widely used in various applications such as telecommunication, optical and bio-medical engineering [5,6]. Some studies [7,8] have investigated irradiating glass samples repeatedly along the same path to investigate the effect of the amount of radiation deposition on the microchannel fabrication. However, such studies use mainly fixed operating parameters.…”

Section: Introductionmentioning

confidence: 99%

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3D transient thermal modelling of laser microchannel fabrication in lime-soda glass

Issa

Brabazon

Hashmi

2008

Journal of Materials Processing Technology

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Laser-fabricated microchannels in glass offer a wide range of bioengineering and telecommunication applications. A 1.5 kW CO 2 laser with 10.6 µm wavelength was used in this study to fabricate micorchannels on the surface of soda-lime glass sheets. A thermal model of the process was developed based on transient heat conduction due to a pulsed heat input. The resulting equation predicted the temperature distribution in the regions surrounding the laser focus. Temperature -time curves were drawn from those equations, which were useful in estimating the thermal history in the processed samples. The temperature distribution was also used to predict the channel geometry (based on the vaporisation temperature of glass). Most of the laser power used was consumed in bringing the glass to the vaporisation temperature. The model was able to predict the channel width, depth and surface roughness. These laser-fabricated channel characteristics were measured and compared to the results obtained from the thermal model. The laser power, frequency, pulse width and translation speed were the control parameters in both studies; hence a direct comparison was established between the model and the experimental results.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

3D transient thermal modelling of laser microchannel fabrication in lime-soda glass

Issa

Brabazon

Hashmi

2008

Journal of Materials Processing Technology

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“…These include, not only limited to, thermoplastic cutting [1], telecommunications, sensing devices [2], printer nozzles, drilling of biomedical catheter, microscribing [3], optical fiber microsensors for vibration detection [4], and biomaterial fluidic-channels [5]. Microchannels are the key features in the field of biomedical devices.…”

Section: Introductionmentioning

confidence: 99%

Laser Ablation Process Competency to Fabricate Microchannels in Titanium Alloy

Ahmed

Darwish

Alahmari

et al. 2015

Materials and Manufacturing Processes

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Laser ablation is one of the competent machining processes to fabricate microfeatures in variety of engineering materials. This study has been progressed to evaluate the process capability of generating microchannels of various sizes (50 Â 50 mm, 100 Â 100 mm, 200 Â 100 mm, and 1000 Â 500 mm) in titanium alloy (Ti6Al4V) using Nd:YAG laser. Channel's top width, bottom width, depth, and taperness are examined as the four process responses against three laser based parameters to the naming of laser intensity, repetition rate, and scan speed. All the geometrical dimensions are measured through photographic snapshots of SEM of each fabricated channel. The results reveal that the selection of channel size is critical to achieve the desired machining geometries. Wider sized channels (such as 200 Â 100 and 500 Â 1000 mm) are experienced as more flexible to be generated than narrower sized channels (50 Â 50 and 100 Â 100 mm). The precise parametric combination is the key to realize more tight dimensional enormities with respect to the targeted machining elements. The most appropriate parametric combinations that can generate the respectable results are explored and applied for machining of different channel sizes.

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“…Despite the fact that laser micro-machining is a technically complicated manufacturing process, research work has allowed the fabrication of precise, smooth, and clean components at high speed [1][2][3]. Laser micro-machining is employed for many micro-machining applications in the fields of telecommunications, glass cutting, micro-sensors [4][5][6]; micro-via, ink jet printer nozzles, biomedical catheter drilling, thin-film scribing [7]; micro-fluidic channels for blood/protein analysis [8]; optical vibration sensors [9]; three-dimensional binary data storage [10][11][12]; and novelty fabrications [13].…”

Section: Introductionmentioning

confidence: 99%

Analysis and prediction of dimensions and cost of laser micro-machining internal channel fabrication process

Shadi

Brabazon

2010

EPJ Web of Conferences

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Abstract. This paper presents the utilisation of Response Surface Methodology (RSM) as the prediction tool for the laser micro-machining process. Laser internal microchannels machined using pulsed Nd:YVO 4 laser in polycarbonate were investigated. The experiments were carried out according to 3 3 factorial Design of Experiment (DoE). In this work the three input process set as control parameters were laser power, P; pulse repetition frequency, PRF; and sample translation speed, U. Measured responses were the channel width and the micro-machining operating cost per metre of produced microchannels. The responses were sufficiently predicted within the set micro-machining parameters limits. Two factorial interaction (2FI) and quadratic polynomial regression equations for both responses were constructed. It is proposed that the developed prediction equations can be used to find locally optimal micro-machining process parameters under experimental and operational conditions.

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Thermoplastic microchannel fabrication using carbon dioxide laser ablation

Cited by 33 publications

References 17 publications

3D transient thermal modelling of laser microchannel fabrication in lime-soda glass

3D transient thermal modelling of laser microchannel fabrication in lime-soda glass

Laser Ablation Process Competency to Fabricate Microchannels in Titanium Alloy

Analysis and prediction of dimensions and cost of laser micro-machining internal channel fabrication process

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