Academic literature on the topic 'Micro-Jetting'

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Journal articles on the topic "Micro-Jetting"

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Sun, Huaiyuan, Qingqing Gu, Yuehua Liao, and Chenjie Sun. "Research of Amoxicillin Microcapsules Preparation Playing Micro-Jetting Technology." Open Biomedical Engineering Journal 9, no. 1 (March 31, 2015): 115–20. http://dx.doi.org/10.2174/1874120701509010115.

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With polylactic-co-glycolic acid(PLGA) as shell material of microcapsule, amoxicillin as the model, poly(vinyl alcohol) and twain as surfactant, amoxicillin-PLGA microcapsules were manufactured using digital micro-jetting technology and a glass nozzle of 40μm diameter. The influences of the parameters of micro-jetting system on the mean grain size and size distribution of amoxicillin-PLGA microcapsules were studied with single factor analysis and orthogonal experiment method, namely, PLGA solution concentration, driving voltage, jetting frequency, stirrer speed, etc. The optimal result was obtained; the form representation of microcapsule was analyzed as well. The results show that, under certain conditions of experimental drug prescription, driving voltage was proportional to the particle size; jetting frequency and stirrer speed were inversely proportional. When the PLGA concentration for 3%, driving voltage for 80V, the jetting frequency for 10000Hz and the stirrer speed for 750rpm, the particles were in an ideal state with the mean grain size of 60.246μm, the encapsulation efficiency reached 62.39% and 2.1% for drug loading.
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LI, XIAORAN, JUN XU, LEI ZHAO, XIAO GUO, and WEI HUANG. "A NOVEL NANOFABRICATION USING MICRO DROPLET JETTING SYSTEM." International Journal of Nanoscience 05, no. 06 (December 2006): 809–13. http://dx.doi.org/10.1142/s0219581x06005194.

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This study briefly reports a newly developed nanopatterning technology utilizing a so-called micro droplet jetting system, which can be used in various applications such as nanofabrication. Compared with the conventional methods, this technology has the advantages as follows: it can be manipulated easily and patterned freely as the user requires; furthermore, it shows high-reliability and high-stability with very low cost. The typical specs of the micro droplet jetting system for fabricating nanodevice show as follows: (1) nanoparticle size: 50–60 nm; (2) characteristic wavelength: 400–450 nm; (3) volume of droplet: 6 ppl; (4) size of pixel: 70 μm. In this article, the nanopatterning technology adopting the micro droplet jetting system has been demonstrated to be useful for nanopatterning the pixels which consist of nanoparticles, organic luminescent materials. In addition, the micro topography and the luminescent property of the patterned surface have been characterized by using Scanning Electron Microscope (SEM) and fluorescence microscope, respectively. Finally, the fluorescence of the patterned nanoparticles was observed.
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Zhan, Hong-wu, Fang Xu, and Ling-feng Lu. "Researches on the Observation on the Jetting of Liquid of High Viscosity and Droplet Control." Open Mechanical Engineering Journal 9, no. 1 (October 7, 2015): 812–19. http://dx.doi.org/10.2174/1874155x01509010812.

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Valve regulated droplet jetting is an important method for the generation of liquid droplet of high viscosity. Based on learning from piezoelectric micro-droplet jetting mechanism and researching methods, theoretical analysis and simulation were conducted on the factors affecting the micro-droplet jetting volume, and the qualitative relationship between the size of the jetted droplet and the feed pressure and striker stroke so as to guide the designing of the structure of the pneumatic valve control type nozzle and design the droplet jetting system and observation experiment platform based on stroboscopic techniques. Different jetting parameters was changed according to the results of the theoretical analysis for the conduction of jetting experiment, and several glycerin solutions at different solutions were taken as the working liquid for studying the effect of the several factors like feed pressure, pulse driving pressure, driving pulse width, and striker stroke. The striker would not be lifted to an ultimate position through controlling the pulse air pressure or driving pulse width so as to be able to jet extremely tiny droplet, but this is of rather bad stability. It is the most effective, stable and optimized method to control the striker stroke so as to change the diameter and shapes of the droplets.
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Xing, Bo, Chun Cheng Zuo, Feng Li Huang, Ye Bo Lu, and Guang Shan Hu. "Effect of Electrode Distance on Jetting Behavior of Non-Particle Nano Ag Conductive Ink in Electrohydrodynamic Micro Jet Printing." Materials Science Forum 893 (March 2017): 118–21. http://dx.doi.org/10.4028/www.scientific.net/msf.893.118.

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The effect of electrode distance on jetting behavior of non-particle nanoAg conductive ink during Electrohydrodynamics (EHD) under the direct current voltage is investigated. Experiments results indicate that the height of the meniscus increases while the curve decreases with the increase of electrode distance, and the jetting behavior evolves from pulsate cone jetting to pulsate micro dripping jetting. The low voltage combined with long electrode distance resulted in returning of meniscus to its original shape. With the increase of voltage, the increased electrode distance result in the increase of meniscus deformation and the electrode distance for maintaining the stable jetting was increased. Under the same voltage, the line width increases with the increase of electrode distance. The exceeded long electrode distance and high voltage resulted in jitter of elongated meniscus thus is not beneficial for the printing quality control.
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Liang, Hanzhuang, Floriana Suriawidjaja, and Michael Szuch. "Anaerobic adhesive jetting for micro-electronics packaging applications." Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2015, DPC (January 1, 2015): 000726–42. http://dx.doi.org/10.4071/2015dpc-tp32.

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Anaerobic fluid has been used as an industrial adhesive to seal or bond metal components for both large and small scales. Its use has recently extended to micro-electronics packaging. This novel application brings challenges to the dispensing process due to part handling at micro-scale dimensions and high production throughput. Most high-precision dispensers have fluid paths that are constructed of metal components to ensure product robustness and enable dimensional precision of micro-scale parts. This is incompatible with anaerobic adhesives which cure in the absence of oxygen and utilize metal ions as the catalyst. Furthermore curing accelerates with smaller gaps. A non-contact jetting solution has been developed and applied in production environment to dispense anaerobic adhesives with precise volume control, at high speed, and in continuous operation. Dispensing can be optimized to include a range of hardware dimensions, component surfaces, fluid handling, and process control.
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Li, Zong'an, Jiquan Yang, Li Zhu, and Wencheng Tang. "Fabrication of paper micro-devices with wax jetting." RSC Advances 6, no. 22 (2016): 17921–28. http://dx.doi.org/10.1039/c5ra26255k.

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Zenou, M., A. Sa'ar, and Z. Kotler. "Supersonic laser-induced jetting of aluminum micro-droplets." Applied Physics Letters 106, no. 18 (May 4, 2015): 181905. http://dx.doi.org/10.1063/1.4921009.

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Lee, Hyun-Shik, Insu Park, Keum Soo Jeon, and El-Hnag Lee. "Fabrication of micro-lenses for optical interconnection using micro ink-jetting technique." Microelectronic Engineering 87, no. 5-8 (May 2010): 1447–50. http://dx.doi.org/10.1016/j.mee.2009.11.116.

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Liu, Baohui, Hang Zou, Haixuan Luo, and Xiaoming Yue. "Investigation on the Electrochemical Micromachining of Micro Through-Hole by Using Micro Helical Electrode." Micromachines 11, no. 2 (January 21, 2020): 118. http://dx.doi.org/10.3390/mi11020118.

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The instability of machining process caused by the difficulty of the electrolyte refresh in electrochemical micromachining (EMM) of micro through-hole has been an unsolved problem. Thus, this paper investigates the electrochemical micromachining of micro through-hole by using a micro helical electrode combining with the jetting electrolyte. With the help of high-speed rotation of micro helical electrode and its spiral shape, the internal electrolyte can be stirred while the external jetting electrolyte can flow into the hole along the spiral groove to refresh the electrolyte effectively, thereby, improving the machining stability of EMM. Firstly, the influence of the process parameters on the fabrication of micro through-hole in the EMM by using micro helical electrode without non-conductive mask is investigated. Based on the optimization of the process parameters, a micro through-hole with an inlet dimension of 121.6 μm and an outlet dimension of 114.9 μm is obtained successfully. Furthermore, this paper also tries to use the micro helical electrode coated with the non-conductive mask to decrease the bad influence of the stray corrosion attack. It is found that the non-conductive mask coated on the surface of micro helical electrode can improve the machining accuracy significantly under the condition of low pulse frequency (≤1 KHz). However, its good effect on preventing the stray corrosion decreases along with the increase of the pulse frequency.
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KHOO, B., E. KLASEBOER, and K. HUNG. "A collapsing bubble-induced micro-pump using the jetting effect." Sensors and Actuators A: Physical 118, no. 1 (January 31, 2005): 152–61. http://dx.doi.org/10.1016/s0924-4247(04)00552-7.

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Dissertations / Theses on the topic "Micro-Jetting"

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Franzkowiak, Jean-Eloi. "Interaction lumière-nuage de particules micrométriques hautes vitesses : application à la Vélocimétrie Hétérodyne." Thesis, Paris, ENSAM, 2018. http://www.theses.fr/2018ENAM0053/document.

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Au passage d’un choc sur la surface rugueuse d’un métal, un nuage de débris micrométriques est éjecté. Sa signature spectrale temps-vitesse est mesurée au moyen d’un système optique interférométrique : la Vélocimétrie Hétérodyne (VH).Dans un régime de diffusion simple de la lumière, une étude paramétrique a mis en évidence l’influence des paramètres clés du nuage sur sa réponse Doppler. Nous avons estimé, par Maximum de Vraisemblance, la courbe masse-vitesse d’un nuage d’étain et l’incertitude associée. L’allure de la mesure a également été étudiée en incorporant aux calculs le rendement optique de la sonde.Nous présentons une méthode de calcul Monte Carlo, rendant compte des effets de diffusion multiple. Appliquée à trois expériences d’éjection d’or et d’étain, la présence de vitesses non physiques sur la mesure VH, liée aux diffusions multiples nuage-surface-nuage, a été soulignée, et les décroissances progressives de la visibilité en vitesse et de la puissance rétrodiffusée justifiées. Quelle que soit la masse éjectée, la diffusion multiple doit être intégrée aux calculs, un régime de diffusion simple n’étant valable qu’asymptotiquement, dans les limites d’un temps infini et/ou d’un faisceau sonde de dimension réduite par rapport aux libres parcours moyen de diffusion
As a shockwave reaches a roughened metal’s surface, high-speed micron-sized particles are ejected. The spectral signature of the cloud can be measured using a fiber-based interferometric setup, so-called Photon Doppler velocimetry (PDV).In the single scattering regime, we study how the parametric dependencies of the cloud influence its Doppler response. Using a Maximum Likelihood technique, we estimate the mass-velocity function of ejected material, and its uncertainty. The time-dependent statistical properties of the spectrum, coming from the complex optical collection efficiency of the probe, are also explained.We present a Monte Carlo method to incorporate multiple scattering. Three different ejecta experiments are studied and the presence of non-physical velocities attributed to multiple scattering between surface and ejecta. Cloud’s visibility and backscattered power decrease with time due to the existence of different scattering regimes. Whatever the ejected mass, multiple scattering effects have to be integrated in PDV calculations. A single scattering will only be asymptotically valid, when time reaches infinity and/or the beam diameter is negligible with respect to the scattering mean free paths
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Conference papers on the topic "Micro-Jetting"

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Li Xiaoyan and Zhang Shu. "Progress on micro-jetting forming." In International Technology and Innovation Conference 2006 (ITIC 2006). IEE, 2006. http://dx.doi.org/10.1049/cp:20060853.

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Liu, Hongjun, and Hui Gao. "Research on Jetting Process of Micro-droplet Jetting Technique Based on Converse Piezoelectric Effect." In 2010 International Conference on Digital Manufacturing and Automation (ICDMA). IEEE, 2010. http://dx.doi.org/10.1109/icdma.2010.159.

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Zhou, Zhipeng, Ge Xu, Chao Liu, and Jinsong Zhang. "Preparation of micro water droplets in micro-channel by digital jetting." In 2015 4th International Conference on Sustainable Energy and Environmental Engineering. Paris, France: Atlantis Press, 2016. http://dx.doi.org/10.2991/icseee-15.2016.154.

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Zhang, Jinsong, Ge Xu, Chao Liu, Zhipeng Zhou, and Liangwen Yan. "Preparation of micro oil droplets in micro-channel by digital jetting." In 2015 4th International Conference on Sustainable Energy and Environmental Engineering. Paris, France: Atlantis Press, 2016. http://dx.doi.org/10.2991/icseee-15.2016.155.

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Chen, Cong-Ping, and Jie-Guang Huang. "Modeling the Flow Rate of Pneumatic Driving Micro-droplet Jetting Process." In 5th International Conference on Civil Engineering and Transportation. Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/iccet-15.2015.362.

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Haung, Jieguang, Jun Luo, Kang Zhang, Junxing Cui, Hao Yi, and Lehua Qi. "Development of a Metal Micro-droplet Ejecting Equipment for Manipulation Jetting Trajectory." In 2018 IEEE International Conference on Manipulation, Manufacturing and Measurement on the Nanoscale (3M-NANO). IEEE, 2018. http://dx.doi.org/10.1109/3m-nano.2018.8552225.

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LUO, Z. W., Y. P. LI, L. Y. WANG, and D. H. SUN. "Design and Theoretical Analysis of Nozzle Match Type for Micro Droplets Jetting Dispenser." In The 2015 International Conference on Mechanical Engineering and Control Systems (MECS2015). WORLD SCIENTIFIC, 2016. http://dx.doi.org/10.1142/9789814740616_0027.

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Luo, Zhi-Wei, Yi-Pan Li, Ling-Yun Wang, and Dao-Heng Sun. "Comparative study on micro droplets jetting dispenser nozzle match type based on numerical simulation." In 2015 International Conference on Mechanics and Mechatronics (ICMM2015). WORLD SCIENTIFIC, 2015. http://dx.doi.org/10.1142/9789814699143_0042.

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Lu, Shizhou, Chenliang Ren, Xiaohui Shan, Wei Liu, Chenyu Zhu, and Yuankai Ren. "Design and Implementation of Micro-Liquid Jetting System Featuring Piezostack Actuator for Microelectronic Packaging." In EEET '18: 2018 International Conference on Electronics and Electrical Engineering Technology. New York, NY, USA: ACM, 2018. http://dx.doi.org/10.1145/3277453.3286090.

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Zheng, Hai, Xin Liu, Yizhou Long, Yupei Zhao, Lixin Tian, Shizhou Lu, Pan Qu, and Caiyi Zhang. "Model and experiment of a needle-type micro-liquid jetting system driven by piezoelectric actuator." In 2020 IEEE 4th Information Technology, Networking, Electronic and Automation Control Conference (ITNEC). IEEE, 2020. http://dx.doi.org/10.1109/itnec48623.2020.9084662.

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