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Journal articles on the topic 'Scribing'

Author: Grafiati

Published: 4 June 2021

Last updated: 29 May 2022

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1

Chen, Xue Song, Xin Chen, Xin Du Chen, and Ming Sheng Yang. "Influence of Laser Scribing System in the Electrical Properties for a-Si Thin Film Solar Cell Preparation." Key Engineering Materials 552 (May 2013): 356–60. http://dx.doi.org/10.4028/www.scientific.net/kem.552.356.

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Laser scribing of hydrogenated amorphous silicon (a-Si) is a crucial step in the fabrication of thin film photovoltaic modules. The required line width of the laser scribing process for a-Si thin film solar cell preparation is 30 m~50 m, the dead zone is less than 300 m in size, and the line depth should be compliant with the process requirements. Thus, the high imaging quality and focal depth of the optical system is required in the laser scribing system. Three crucial laser patterning steps (known as P1, P2 and P3 in the photovoltaic literature) are integrated in the thin film silicon module manufacturing sequence. Therefore, efforts to optimize these laser processes are demanded by the photovoltaic industry. In particular, the state of the remaining material after laser treatment is known to have a critical influence on the electrical properties of the final devices. This paper focuses on the P3 laser scribing process with the peculiarity that it has been done in single solar cells. By evaluating it in single solar cells rather than in finished module, it is possible to isolate its effect on the device characteristics since the P1 and P2 scribings are omitted. To study the effect of the P3 scribing length, several scribings can be done in the same cell. As it will be shown, the high speed motion systems needed for precision laser scribing plays an important role in this experiment. They can be responsible for the electrical losses after the scribing of the solar cells. If this is dealt with properly, it can be seen that the P3 scribings have very little effect on the electrical characteristics of the processed solar cells.

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2

Myagkova, Olha. "USE OF SCRIBING AND SKETCHNOTING TECHNOLOGIES IN THE EDUCATIONAL PROCESS." Continuing Professional Education: Theory and Practice, no. 4 (2020): 90–95. http://dx.doi.org/10.28925/1609-8595.2020.4.11.

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The article is devoted to the use of scribing and sketching technologies in the educational process as visualization technologies. It is proved that in the conditions of total environment with modern information technologies and large information flows and formation of clip thinking in students, visualization that takes into account these cognitive features promotes understanding, mastering and memorization of educational material, improves learning and communication skills, increases motivation, learning, and promotes critical thinking; keeps the attention of the individual on key points, makes him an active participant in the educational process. The advantages and disadvantages of using scribing technologies in the educational process are summarized. The types of scribing and possible variants of their use are researched and analyzed. Among them are painted, application, magnetic, flannel, which involves the use of flannel (carpet linograph). technologies for using special programs or online services to create online scribing (computer, animation, video scribing) is emphasised. Scribbing facilitation is singled out, which involves the translation of information from verbal to visual form. Attention is paid to the study of the positive impact of visualization on the assimilation and comprehension of material through sketching technologies: they increase student involvement in learning, encourage more effective strategies and promote key skills, including creative thinking, communication and skills to build and present knowledge. The main models of sketchouting and their variants of use are investigated: linear, vertical, radial, modular, trajectory, skyscrapers or columnar, popcorn.

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3

Cramer, Franz Anton. "De-Scribing Dance, In-Scribing Biography." Performance Research 8, no. 4 (January 2003): 77–83. http://dx.doi.org/10.1080/13528165.2003.10871971.

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4

Wang, Jian, Qiang Liu, Pengpeng Sun, Zhiwei Ning, and Liuquan Wang. "Study on Model and Experimental of Laser Scribing Parameter of Maskant in Chemical Milling for Aerospace Applications." Applied Sciences 12, no. 6 (March 12, 2022): 2914. http://dx.doi.org/10.3390/app12062914.

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In order to solve the problems of multiple process parameters, difficult control and high process requirements in laser first/second scribing of aerospace chemical milling thin-wall parts, a laser scribing depth model based on thermal energy balance was established, and the relationship between laser power and speed was established with scribing depth as a target. Using AC850 laser scribing maskant as coating material, the effects of laser power, scribing speed, laser frequency, forward angle and side slope angle on the scribing depth were studied by single factor experiment. Experimental results show that the theoretical model is in good agreement with experimental data. The laser scribing depth is positively proportional to the laser power and inversely proportional to the laser speed and has little relationship with the laser frequency. The predicted accuracy of the mathematical equations regarding the laser power density and scribing depth, calculated by the laser power, speed and scribing depths experimental data, are 88.53% and 90.79%. The laser scribing depth at a forward angle of 6° and a side slope angle of 7° is deeper compared with the vertical incident scribing depth, and the angle is also the recommended angle of laser scribing. Based on the simplified regression model, the laser scribing depth model can be directly used in the laser NC system to realize the adaptive adjustment and accurate control of laser energy according to the actual laser speed.

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5

Wang, Jian, Qiang Liu, Pengpeng Sun, Chenxin Zang, Liuquan Wang, Zhiwei Ning, Ming Li, and Hui Wang. "Research Status and Prospect of Laser Scribing Process and Equipment for Chemical Milling Parts in Aviation and Aerospace." Micromachines 13, no. 2 (February 18, 2022): 323. http://dx.doi.org/10.3390/mi13020323.

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Laser scribing in chemical milling is an important process which can effectively improve the precision and efficiency of chemical milling, and is of great significance to improve the thrust–weight ratio and manufacturing efficiency of aviation and aerospace parts. According to the scribing requirements in chemical milling for aviation and aerospace parts, the process and mechanism of laser scribing were studied and the influence of different process parameters for the quality of laser scribing was analyzed. Based on the review of related research literature, the laser scribing process, the ablation mechanism and technology of different materials and the selective laser removal process for “laser–coating–substrate” are summarized and discussed. Based on the requirements of high-precision laser scribing on complex surfaces, the current situation of laser scribing equipment is summarized. Finally, the practical challenges and key technical problems for the laser scribing process are summarized, and the application and development of laser scribing in aerospace manufacturing are prospected.

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6

Zener, R. "scribing death." Canadian Medical Association Journal 184, no. 14 (April 30, 2012): E780. http://dx.doi.org/10.1503/cmaj.111725.

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7

Chyr, Irving, Cheng Peng, Ji Wang, and Jonathan Halderman. "Studies and Applications of Advanced Laser Scribing for High Brightness LEDs." Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2012, DPC (January 1, 2012): 000684–705. http://dx.doi.org/10.4071/2012dpc-ta42.

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The optical and electrical properties of LEDs scribed using both traditional and advanced laser scribing were investigated. Variations in scribe line texture and depth were examined and monitored for both laser types using both optical and electron microscopy. Simulation was conducted and verified by the experimental results on laser scribing depth versus LED light output. The metrology techniques also correlated the sidewall roughness with light output of LED between traditional and advanced laser scribing. Improvements by the advanced laser scribing were demonstrated for different LED designs, such as DBR with metal mirrors. Our study showed that the advanced laser scribing is comparable to the sidewall etching process which is the current industrial standard. Our advanced laser scribing system can process different types of metal mirrors on top of DBR structures in a single tool solution. We also presented our latest results on the emerging new substrates of vertical LEDs on Si and other advanced non-sapphire substrates.

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8

Akiyama, Yusuke, Mutsumi Okada, Hirofumi Suzuki, Toshio Fukunishi, Yoshiyuki Asai, Noriyuki Ogasawara, and Kazuma Iizawa. "Scribing Characteristics of Glass Plate with Ground PCD Scribing Wheel." International Journal of Automation Technology 12, no. 5 (September 5, 2018): 760–66. http://dx.doi.org/10.20965/ijat.2018.p0760.

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Polycrystalline diamond (PCD) tools are widely used for cutting tools because PCD has no crystal orientation and is an isotropic material, it is low in cost, and it is easily machined by electric discharge machining. PCD is sintered from diamond abrasives with an alloy metal, such as cobalt, and it is difficult to reduce the surface roughness and the edge accuracy compared with single crystal diamond. In this study, high efficiency and high precision machining of the PCD wheel were investigated. In the experiments, PCD wheels were ground with a diamond wheel, and the effects of the grinding direction and the load on the tool preciseness and the scribing performance were examined.

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9

Huang, Y., Y. Liu, and G. L. Zhu. "Investigation of Laser Scribing Technics for Reducing Core Loss of Grain-Oriented Silicon Steels." Key Engineering Materials 455 (December 2010): 141–45. http://dx.doi.org/10.4028/www.scientific.net/kem.455.141.

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A laser is often considered to scribe the steel surfaces after cold-rolling and annealing to reduce the energy losses associated with hysteresis and eddy currents. In order to maximize the loss reduction of this process, the laser scribing technics was investigated in details. In this work, three laser scribing parameters including pulse energy, scanning velocity and scribing spacing, which are highly related to the loss reduction, were selected for the study. A L9(34) orthogonal experiment was designed and carried out by an Nd:Yag laser marking machine. The results indicate that the subsequence of significance of the three factors on core loss reduction is as follows: pulse energy, scribing spacing and scanning velocity. And an optimized combination of parameters is obtained by range method.

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10

Huang, Yu, Yong Liu, and Guo Li Zhu. "Parameter Optimization of Laser Scribing Technics of 30Q130 Grain-Oriented Silicon Steel Based on Genetic Neural Network." Applied Mechanics and Materials 37-38 (November 2010): 844–48. http://dx.doi.org/10.4028/www.scientific.net/amm.37-38.844.

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A laser is often considered to scribe the grain-oriented silicon steel surfaces after cold-rolling and annealing to reduce the core loss. It is necessary to select the best scribing parameters to maximize the reduction in this process. This paper proposed an optimization method of genetic algorithm during laser scribing of 30Q130 steel, by developing an artificial neural network prediction model using a database form a designed orthogonal experiment. The objective was to determine the best combination values of three important scribing parameters, namely scribing velocity, pulse energy and scanning spacing, that can get the largest core loss reduction. An optimized combination of parameters was obtained by this method and then validated by an adding experiment. The result indicates that the optimization model is reliable.

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11

Ishikawa, Ryousuke, Hidetoshi Wada, Yasuyoshi Kurokawa, Porponth Sichanugrist, and Makoto Konagai. "Laser Scribing of W-textured ZnO Substrates Using Green Laser." MRS Proceedings 1493 (2013): 207–12. http://dx.doi.org/10.1557/opl.2013.233.

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ABSTRACTThin-film silicon solar cells have been attracted a lot of intention as low-cost solar cells. One of the most important technologies for improving their performances is light trapping. We have demonstrated the high potential of double-textured zinc oxide (ZnO) thin films used as front transparent conductive oxide (TCO) films due to further enhancement of their light-trapping effects. Although the laser scribing method has already been well established for low-cost thin-film silicon solar cell module manufacturing, laser scribing technique on double-textured ZnO is new and still a challenging issue. In this study, we firstly demonstrated the availability of laser scribing for amorphous silicon (a-Si) solar cells fabricated on double-textured ZnO substrates. It is general to utilize lasers with wavelength of 1.06 μm and 532 nm for scribing of TCO and silicon layer, respectively. Here we attempted to scribe both of TCO and silicon layers using a 532 nm wavelength laser (green laser) for process simplifying.

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12

Rugen-Hankey, S. L., V. Barrioz, A. J. Clayton, G. Kartopu, S. J. C. Irvine, C. White, G. Rutterford, and G. Foster-Turner. "Developing Monolithically Integrated CdTe Devices Deposited by AP-MOCVD." MRS Proceedings 1538 (2013): 275–80. http://dx.doi.org/10.1557/opl.2013.1009.

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ABSTRACTThin film deposition process and integrated scribing technologies are key to forming large area Cadmium Telluride (CdTe) modules. In this paper, baseline Cd1-xZnxS/CdTe solar cells were deposited by atmospheric-pressure metal organic chemical vapor deposition (AP-MOCVD) onto commercially available ITO coated boro-aluminosilicate glass substrates. Thermally evaporated gold contacts were compared with a screen printed stack of carbon/silver back contacts in order to move towards large area modules. P2 laser scribing parameters have been reported along with a comparison of mechanical and laser scribing process for the scribe lines, using a UV Nd:YAG laser at 355 nm and 532 nm fiber laser.

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13

Abelev, I., D. Lewis, J. Fraser, and P. Atkinson. "P142: Perspectives of medical students and undergraduate students on their experience as medical scribes in the Saint John Regional Hospital Emergency Department." CJEM 22, S1 (May 2020): S115—S116. http://dx.doi.org/10.1017/cem.2020.346.

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Introduction: Electronic medical records (EMR) have placed increasing demand on emergency physicians and may contribute to physician burnout and stress. The use of scribes to reduce workload and increase productivity in emergency departments (ED) has been reported. This objective of this study was to evaluate the educational and experiential value of scribing among medical and undergraduate students. We asked: “Will undergraduates be willing to scribe in exchange for clinical exposure and experience?”; and, “Should scribing be integrated into the medical school curriculum?” Methods: A mixed-methods model was employed. The study population included 5 undergraduate, and 5 medical students. Scribes received technical training on how to take physician notes. Undergraduate students were provided with optional resources to familiarize themselves with common medical terminology. Scribes were assigned to physicians based on availability. An exit interview and semi-structured interviews were conducted at the conclusion of the study. Interviews were transcribed and coded into thematic coding trees. A constructivist grounded theory approach was used to analyze the results. Themes were reviewed and verified by two members of the research team. Results: Undergraduate students preferred volunteering in the ED over other volunteer experiences (5/5); citing direct access to the medical field (5/5), demystification of the medical profession (4/5), resume building (5/5), and perceived value added to the health care team (5/5) as main motivators to continue scribing. Medical students felt scribing should be integrated into their curriculum (4/5) because it complemented their shadowing experience by providing unique value that shadowing did not. Based on survey results, five undergraduate students would be required to cover 40 volunteer hours per week. Conclusion: A student volunteer model of scribing is worthwhile to students and may be feasible; however, scribe availability, potentially high scribe turnover, and limited time to develop a rapport with their physician may impact any efficiency benefit scribes might provide. Importantly, scribing may be an invaluable experience for directing career goals and ensuring that students intrinsically interested in medicine pursue the profession. Medical students suggested that scribing could be added to the year one curriculum to help them develop a framework for how to take histories and manage patients.

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14

Saldanha, Kennedy, and Lynn Nybell. "Capturing/captured by stories of marginalized young people: Direct scribing and dialogic narrative analysis." Qualitative Social Work 16, no. 2 (August 1, 2016): 206–23. http://dx.doi.org/10.1177/1473325016656750.

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Examining the results of the “narrative turn” in social work in their seminal article for Qualitative Research in 2005, Riessman and Quinney found themselves disappointed with the size and quality of the research corpus they reviewed. However, they also identified three exemplars of promising work, including the research of Faye Martin (Martin, 1998). Riessman and Quinney highlighted Martin’s narrative-gathering strategy, devised on the basis of her practice experience and dubbed “direct scribing.” The direct scribing method of narrative data collection disciplines the work of the researcher, who becomes the “scribe,” and elaborates the roles of the interviewees as authors of the narratives that they create. This article on capturing (and being captured by) the narratives of marginalized young people is situated in an increasingly significant movement in the social work literature that promotes giving voice to young people, so that they may have their views taken into account. We highlight the benefits of direct scribing as a means of narrative-gathering in social work and then address the challenge of interpreting these narratives, drawing on examples from our research. We suggest connections between direct scribing and the interpretive approach of dialogic narrative analysis as a method of interpretation that requires “letting stories breathe.” (Frank, 2010). The aim of this contribution is to describe specific ways in which linking direct scribing and dialogical narrative analysis may contribute to the advancement of narrative research in social work, and, in particular, to the enhancement of efforts to amplify “youth voice” in social work policy and practice.

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15

Sakulina, Julia V. "Potential of using scribing technology to increase the level of theoretical material mastering." Problems of Modern Education (Problemy Sovremennogo Obrazovaniya), no. 4, 2020 (2020): 172–80. http://dx.doi.org/10.31862/2218-8711-2020-4-172-180.

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The article is devoted to the discussion of issues of increasing the level of mastering theoretical material by means of a graphical display method. Scribing is the latest technique, the speaker’s speech is illustrated in parallel with the creation of drawings. The main function of the method of submitting information using scribing is the ability to quickly, efficiently and visually convey information to students.

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16

HADA, Atsushi, Noboru MORITA, Shigeru YAMADA, and Noboru TAKANO. "1004 Rolling frictional behavior and scribing phenomenon of scribing wheel for cutting sheet glass." Proceedings of Conference of Hokuriku-Shinetsu Branch 2012.49 (2012): 100401–2. http://dx.doi.org/10.1299/jsmehs.2012.49.100401.

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17

Tsai, Jhy Cherng, and Hong Shin Chen. "Machining Schemes for Dicing Soda Lime Glass." Advanced Materials Research 126-128 (August 2010): 263–68. http://dx.doi.org/10.4028/www.scientific.net/amr.126-128.263.

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This research investigates machining schemes for dicing soda lime glass in order to reduce the damage in the processes. Ductile machining and brittle machining of glass are first analyzed based on fracture mechanics and then verified by experiments. Experiments with various machining schemes including scribing-then-breaking, direct-dicing and dicing-then-breaking processes for soda lime glass are then conducted. Experimental observations showed the following results. (i) The critical depth of cut (CDOC) for soda lime glass is between 0.4μm and 0.8μm that matches theoretical prediction, 0.78μm, based on fracture analysis. (ii) The scribing-then-breaking machining scheme results in less damage than the regular slicing process. The DOC of scribing, however, must be in the ductile-brittle region to achieve this result. (iii) Defect due to dicing on the back surface is higher than that on the front surface in one-step dicing through process. Dicing defects can be effectively reduced by decreasing the feed rate or increasing the dicing speed.

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18

Horbenko, Halyna, Olena Voskoboinikova-Huzieva, Leonid Novohatko, and Margaryta Netreba. "Video scribing as a new marketing tool for educational institutions." LAPLAGE EM REVISTA 7, no. 3A (September 14, 2021): 599–607. http://dx.doi.org/10.24115/s2446-6220202173a1469p.599-607.

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This article aims to examine video scribing as a new marketing tool that can effectively influence a target audience through information visualization using the educational programs of Borys Grinchenko Kyiv University as an example. The empirical basis for the research comprised 27 scribe videos shared on the official social media platforms of Borys Grinchenko Kyiv University between 2017 and 2020. Data collected included static web analysis for effectiveness and audience interaction as demonstrated by their watching and liking of a scribe video series. The total number of scribe video views on social media was approximately 68,000. This total suggests that video scribing technology is an effective tool to incorporate into Borys Grinchenko Kyiv University’s marketing strategy. This experimental research, based on the implementation of video scribing technology (the implementation, in this case, was a part of Borys Grinchenko Kyiv University’s marketing strategy), opens wide further opportunities for the promotion of educational programs and projects through this type of visual communication for other institutions of higher education.

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19

Rauscher, P., J. Hauptmann, A. Wetzig, and E. Beyer. "Domain refinement of grain oriented electrical steel with high power laser beam sources." International Journal of Modern Physics B 28, no. 12 (April 7, 2014): 1442003. http://dx.doi.org/10.1142/s021797921442003x.

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Laser magnetic domain refinement (LMDR) is applied to reduce the power losses of grain oriented electrical steel, which is used as core material in power or distribution transformers, by generating thermal stress due to the absorbed laser energy. The most widely used laser beam source for the industrial utilization is the CO 2 laser beam source with typical core loss improvements of about 10%. In this paper the dependency of treatment parameters with respect to the magnetic properties of the steel sheets are investigated for the laser scribing process using a high power fiber laser beam source. Especially the treatment properties, which are influenced by the laser beam source, such as focusability, wavelength and absorption behavior, are addressed in this paper. Therefore, single sheets 300 mm × 30 mm × 0.27 mm (high-permeability, comparable to M103-27P) are measured before and after the laser scribing process to evaluate the magnetic properties, as well as the loss components. The analysis has shown that the core loss can be improved by approximately 13% using the fiber laser by scribing invisible lines on the sheet surface.

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20

Harless, Patrick. "Scribing: A Technology-Based Instructional Strategy." Mathematics Teacher 104, no. 6 (February 2011): 420–25. http://dx.doi.org/10.5951/mt.104.6.0420.

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21

Compaan, A. D., I. Matulionis, and S. Nakade. "Laser scribing of polycrystalline thin films." Optics and Lasers in Engineering 34, no. 1 (July 2000): 15–45. http://dx.doi.org/10.1016/s0143-8166(00)00061-0.

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22

Tan, K. "Amorphous ribbon domain refinement by scribing." IEEE Transactions on Magnetics 22, no. 3 (May 1986): 188–91. http://dx.doi.org/10.1109/tmag.1986.1064297.

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23

Parker, Pamela J. "E-scribing: More realistic than ever." Nursing Management (Springhouse) 33, no. 4 (April 2002): 50. http://dx.doi.org/10.1097/00006247-200204000-00018.

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24

Pustovalov, D. A., B. Ya Mokritskii, and G. V. Konnova. "Selection of tool materials by scribing." Russian Engineering Research 35, no. 10 (October 2015): 754–57. http://dx.doi.org/10.3103/s1068798x15100159.

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Harless, Patrick. "Scribing: A Technology-Based Instructional Strategy." Mathematics Teacher 104, no. 6 (February 2011): 420–25. http://dx.doi.org/10.5951/mt.104.6.0420.

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26

Panyathip, Rangsan, Supab Choopun, Pisith Singjai, and Sumet Sakulsermsuk. "Utilizing laser scribing for graphene ablation." AIP Advances 11, no. 10 (October 1, 2021): 105305. http://dx.doi.org/10.1063/5.0069203.

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27

Frenţiu, Rodica. "Scribing and De-scribing History: Marie, Queen of Roumania, The Story of My Life (1934-1936)." Philobiblon. Transylvanian Journal of Multidisciplinary Research in the Humanities 24, no. 1 (2019): 5–24. http://dx.doi.org/10.26424/philobib.2019.24.1.01.

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28

Modest, Michael F., and Thomas M. Mallison. "Transient Elastic Thermal Stress Development During Laser Scribing of Ceramics." Journal of Heat Transfer 123, no. 1 (September 11, 2000): 171–77. http://dx.doi.org/10.1115/1.1332779.

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Lsaers are emerging as a valuable tool for shaping and cutting hard and brittle ceramics. Unfortunately, the large, concentrated heat flux rates that allow the laser to efficiently cut and shape the ceramic also result in large localized thermal stresses in a small heat-affected zone. These notable thermal stresses can lead to micro-cracks, a decrease in strength and fatigue life, and possibly catastrophic failure. In order to assess where, when, and what stresses occur during laser scribing, an elastic stress model has been incorporated into a three-dimensional scribing and cutting code. First, the code predicts the temporal temperature fields and the receding surface of the ceramic. Then, using the scribed geometry and temperature field, the elastic stress fields are calculated as they develop and decay during the laser scribing process. The analysis allows the prediction of stresses during continuous wave and pulsed laser operation, a variety of cutting speeds and directions, and various shapes and types of ceramic material. The results of the analysis show substantial tensile stresses develop over a thick layer below and parallel to the surface, which may be the cause of experimentally observed subsurface cracks.

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Hou, L., H. Zhao, S. Y. Bi, and Y. X. Lu. "Fabrication of adhesion-enhanced and highly reliable copper circuits onto flexible substrates via a scribing–seeding–plating process." Journal of Materials Chemistry C 5, no. 25 (2017): 6281–93. http://dx.doi.org/10.1039/c7tc01353a.

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30

Mokritskii, Boris Y., Dmitriy A. Pustovalov, and Alexey Anatolevich Vereschaka. "Comparative Evaluation of Efficiency of Metal-Cutting Tool by Method of Pendulum Scribing." Applied Mechanics and Materials 798 (October 2015): 452–56. http://dx.doi.org/10.4028/www.scientific.net/amm.798.452.

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Method of pendulum scribing was investigated in terms of the possibilities of using this method as a simple-to-use way with a relatively low cost for rapid evaluation of tool material properties. It has been established that by using this method the conditions of loading of the tool material are closest to the real conditions in which the tool operates. Was revealed the relationship between the maximum width and length of the track pendulum scribing and physico-mechanical properties of tool materials. Application of the proposed methodology allows passing to predicting the performance properties of the tool, such as tool life under the specified conditions.

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Mendes, Marco, Jeffrey Sercel, Mathew Hannon, Cristian Porneala, Xiangyang Song, Jie Fu, and Rouzbeh Sarrafi. "Advanced Laser Scribing for Emerging LED Materials." Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2011, DPC (January 1, 2011): 001443–71. http://dx.doi.org/10.4071/2011dpc-wa32.

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Lasers are becoming increasingly important in today's LED revolution and are essential for increasing the efficiency and reducing manufacturing cost of LEDs. Diode pumped solid state lasers excel in scribing horizontal type LEDs on sapphire, silicon, silicon carbide, III-nitrides (gallium nitride and aluminum nitride), as well as III-V semiconductors (gallium arsenide, gallium phosphide). These lasers are also used for dicing vertical type LEDs, which are becoming increasingly more important, often using high thermal conductivity metallic substrates such as copper, CuW and molybdenum. In this paper we will discuss some of the recent laser scribing/dicing techniques and how adequate selection of laser parameters and beam delivery optics allows for a high quality high throughput singulation process for the various materials listed above.

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32

Wang, Mao Lu, Yang Wang, Lei Qin, and Jian Guan. "Experimental Investigation on the Scribing of Sapphire Using UV Laser." Applied Mechanics and Materials 121-126 (October 2011): 147–51. http://dx.doi.org/10.4028/www.scientific.net/amm.121-126.147.

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Sapphire is an important wide bandgap semiconductor material for developing UV/blue optoelectronic devices, however because of its high hardness and chemical stability; it is mechanically and chemically difficult machine. In this paper, the scribing of sapphire by UV laser pulses is investigated under various conditions of pulse energies, scanning speed and repetition rate. The quality and morphology of the laser ablation of sapphire surface are evaluated by scanning electron microscopy. The mechanism of UV laser ablation of sapphire is discussed. The formation of grooves with high aspect ratio and good surface quality is achieved by selecting appropriate laser parameters. Scribing by pulsed UV laser therefore provide a new approach in the development of sapphire-based devices.

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33

Haga, Toshio, and Kazuya Akitsu. "Improvement of Free Solidified Surface of Strip Cast Using a Single Roll Caster by Scribing Semisolid Layer." Solid State Phenomena 192-193 (October 2012): 488–93. http://dx.doi.org/10.4028/www.scientific.net/ssp.192-193.488.

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AA5182 alloy was cast using the single roll caster equipped with the scraper. Improvement of flatness of the free solidified surface of the strip cast by a single roll caster was tried by scribing of semisolid layer using a scraper. The semisolid layer could be scribed and be made flat by the scraper. The scribing force was controlled by a dead weight. Defects which occurred on the scribed surface were investigated. The property of the free solidified surface (scribed surface) was compared with roll contact surface by the deep drawing test. The property of the scribed surface was almost as same as that of the roll contact surface. Mechanical property was investigated by the tension test.

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Meroni, Simone M. P., Katherine E. A. Hooper, Tom Dunlop, Jenny A. Baker, David Worsley, Cecile Charbonneau, and Trystan M. Watson. "Scribing Method for Carbon Perovskite Solar Modules." Energies 13, no. 7 (April 1, 2020): 1589. http://dx.doi.org/10.3390/en13071589.

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The fully printable carbon triple-mesoscopic perovskite solar cell (C-PSC) has already demonstrated good efficiency and long-term stability, opening the possibility of lab-to-fab transition. Modules based on C-PSC architecture have been reported and, at present, are achieved through the accurate registration of each of the patterned layers using screen-printing. Modules based on this approach were reported with geometric fill factor (g-FF) as high as 70%. Another approach to create the interconnects, the so-called scribing method, was reported to achieve more than 90% g-FF for architectures based on evaporated metal contacts, i.e., without a carbon counter electrode. Here, for the first time, we adopt the scribing method to selectively remove materials within a C-PSC. This approach allowed a deep and selective scribe to open an aperture from the transparent electrode through all the layers, including the blocking layer, enabling a direct contact between the electrodes in the interconnects. In this work, a systematic study of the interconnection area between cells is discussed, showing the key role of the FTO/carbon contact. Furthermore, a module on 10 × 10 cm2 substrate with the optimised design showing efficiency over 10% is also demonstrated.

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35

Qiao, Yan-Cong, Yu-Hong Wei, Yu Pang, Yu-Xing Li, Dan-Yang Wang, Yu-Tao Li, Ning-Qin Deng, et al. "Graphene devices based on laser scribing technology." Japanese Journal of Applied Physics 57, no. 4S (February 22, 2018): 04FA01. http://dx.doi.org/10.7567/jjap.57.04fa01.

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36

Yang, Limei, Wei Huang, Mengmeng Deng, and Feng Li. "MOPA pulsed fiber laser for silicon scribing." Optics & Laser Technology 80 (June 2016): 67–71. http://dx.doi.org/10.1016/j.optlastec.2016.01.006.

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37

Jinkins, Michael. "De-Scribing Church: Ecclesiology in Semiotic Dialogue." Scottish Journal of Theology 51, no. 2 (May 1998): 188–213. http://dx.doi.org/10.1017/s0036930600050122.

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Vaclav Havel in a speech in 1989 speaks of the ‘weird fate’ which ‘can befall certain words’.At one moment in history, courageous, liberal-minded people can be thrown into prison because a particular word means something to them, and at another moment, the same kind of people can be thrown into prison because that same word has ceased to mean anything to them, because it has changed from the symbol of a better world into the mumbo jumbo of a doltish dictator.

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38

Bose, Brinda, Chris Tiffin, and Alan Lawson. "De-scribing Empire: Post-Colonialism and Textuality." World Literature Today 69, no. 3 (1995): 656. http://dx.doi.org/10.2307/40151589.

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39

Endert, Heinrich, and Jürgen Niederhofer. "Two Concepts Changing Laser Scribing in Photovoltaics." Laser Technik Journal 8, no. 1 (December 30, 2010): 25–28. http://dx.doi.org/10.1002/latj.201090103.

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40

Malekian, M., S. S. Park, D. Strathearn, Md G. Mostofa, and M. B. G. Jun. "Atomic force microscope probe-based nanometric scribing." Journal of Micromechanics and Microengineering 20, no. 11 (October 15, 2010): 115016. http://dx.doi.org/10.1088/0960-1317/20/11/115016.

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41

Xu, Zhi Gang, Chun Shu Xu, Le Ha, and Rui Hu Zhou. "Research and Design of Laser Scribing Robot Based on Surface Matching." Applied Mechanics and Materials 217-219 (November 2012): 2265–69. http://dx.doi.org/10.4028/www.scientific.net/amm.217-219.2265.

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As the technology which is commonly used on the cutting large irregular curved sheets has many disadvantages, such as incorrect cutting path, poor cutting accuracy. By analyzing the sheet cutting process, a three-dimensional and five-axis laser scribing robot is developed, which is based on surface matching. This robot can acquire the data of the workpiece surface automatically through the non-contact measurement. The date model can be generated by computer. The matching method is based on curvature and arc length of feature points. By matching data model and ideal model, robot can choose the optimal trajectory for laser cutting. From experimental results, the robot is designed rationally. It can make the scribing path closest to the ideal track and has extensive utility value.

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42

Epur, Rigved, Madhumati Ramanathan, Moni K. Datta, Dae Ho Hong, Prashanth H. Jampani, Bharat Gattu, and Prashant N. Kumta. "Scribable multi-walled carbon nanotube-silicon nanocomposites: a viable lithium-ion battery system." Nanoscale 7, no. 8 (2015): 3504–10. http://dx.doi.org/10.1039/c4nr04288c.

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A novel electrode fabrication technique involving a manual scribing action of vertically aligned silicon coated multiwall carbon nanotubes (VASCNTs) on a copper foil have been developed as a viable approach to Li-ion battery electrodes.

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43

Rodrigues, Joana, Julia Zanoni, Guilherme Gaspar, António J. S. Fernandes, Alexandre F. Carvalho, Nuno F. Santos, Teresa Monteiro, and Florinda M. Costa. "ZnO decorated laser-induced graphene produced by direct laser scribing." Nanoscale Advances 1, no. 8 (2019): 3252–68. http://dx.doi.org/10.1039/c8na00391b.

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A scalable laser scribing approach to produce ZnO decorated laser-induced graphene in a unique laser-processing step was developed. The produced composites reveal promising optical and electrochemical properties to be applied in sensing devices.

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44

Shulenkova, B. A., E. V. Lutsenko, A. V. Danilchik, Ja A. Solovjov, A. N. Pyatlitski, and M. V. Kirasirava. "FEMTOSECOND LASER SCRIBING OF SAPPHIRE AT WAVELENGTH 1040 AND 520 NM." Doklady BGUIR, no. 7 (125) (December 7, 2019): 152–56. http://dx.doi.org/10.35596/1729-7648-2019-125-7-152-156.

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Sapphire cutting is one of the largest markets in laser materials processing. Since sapphire is one of the hardest transparent materials its mechanical and optical properties made it the ideal choice for use in the production of various devices, such as LEDs and transistors, cover glasses of watches and mobile devices. Among existing laser- or diamond-based tools solutions, femtosecond laser scribing appear as a promising technology since this technology has the unique capacity to produce highly localized bulk modification owing to non-linear absorption. Sapphire cutting with solid-state lasers is well known for many years and has become a modern industrial process. However, achievable process speed and cut quality are still limited. The femtosecond laser scribing of sapphire was studied at wavelengths of 1040 and 520 nm, followed by wet etching in HNO3/HF solution to identify emerging defects. The morphology of the laser ablated sapphire surface was evaluated by scanning electron microscopy. It was shown that at the wavelength of 1040nm, the material was effectively removed from the surface; however, cracks on the surface were formed. The use of the second harmonic gave more accurate and deep cuts compared with the main frequency at the same conditions. At the wavelength of 520 nm, the cracks were formed anisotropically inside the volume of the material. Therefore, there is a potential application of the femtosecond laser scribing for the fabrication of sapphire-based devices.

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Abdel-Hakim, Sahar Sobhi. "Sophia Poole: Writing the Self, Scribing Egyptian Women." Alif: Journal of Comparative Poetics, no. 22 (2002): 107. http://dx.doi.org/10.2307/1350052.

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Yasuda, H. K., C. M. Reddy, Q. S. Yu, J. E. Deffeyes, G. P. Bierwagen, and L. He. "Effect of Scribing Modes on Corrosion Test Results." CORROSION 57, no. 1 (January 2001): 29–34. http://dx.doi.org/10.5006/1.3290326.

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47

Yamamoto, Koji, Noboru Hasaka, Hideki Morita, and Etsuji Ohmura. "Thermal stress analysis on laser scribing of glass." Journal of Laser Applications 20, no. 4 (November 2008): 193–200. http://dx.doi.org/10.2351/1.2995761.

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YAMAMOTO, Koji, Noboru HASAKA, Hideki MORITA, and Etsuji OHMURA. "Thermal Stress Analysis on Laser Scribing of Glass." Journal of the Japan Society for Precision Engineering, Contributed Papers 71, no. 9 (2005): 1157–62. http://dx.doi.org/10.2493/jspe.71.1157.

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Yahata, Keisuke. "Crack Propagation Analysis in Laser Scribing of Glass." Journal of Laser Micro/Nanoengineering 5, no. 2 (July 2010): 109–14. http://dx.doi.org/10.2961/jlmn.2010.02.0002.

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Min Dayong, 闵大勇, 李勇 Li Yong, 张显斌 Zhang Xianbin, and 卢飞星 Lu Feixing. "Research of Ceramic Precise Scribing by Fiber Laser." Applied laser 30, no. 6 (2010): 488–92. http://dx.doi.org/10.3788/al20103006.0488.

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