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Journal articles on the topic 'Diamond-slot'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Chen, Mei, Feng Zhang, Jian Yun Shen, Hua Guo, and Xi Peng Xu. "Slot Grinding of Advanced Ceramics with Brazed Diamond Cut-Off Wheels." Solid State Phenomena 175 (June 2011): 52–57. http://dx.doi.org/10.4028/www.scientific.net/ssp.175.52.

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Based on the analysis of problems of diamond cut-off wheels used in slot grinding of ceramics at present, a brazed diamond cut-off wheel was produced and analyzed. Two typical advanced ceramics, alumina and silicon nitride, were used as the workpiece materials. In the experiments of slot grinding of ceramics, grinding ratio, wear process of the wheel and grinding quality of the work were studied. Experimental results showed that the brazed diamond cut-off wheel obtained good grinding ratio and abrasive resistance. The surface roughness of ground silicon nitride was better than that of alumina.

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Zhao, Min, Lin Zhang, Bei Ming Tang, and Kattan Maher. "Noise Analysis of Diamond Saw Blade." Advanced Materials Research 1095 (March 2015): 773–76. http://dx.doi.org/10.4028/www.scientific.net/amr.1095.773.

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In this paper, noise of diamond circular saw blades has been measured, five different types of saw blades are used to measure their noise under different working condition. By analyzing of the experimental results, the effect of different factors on the saw blade noise is studied. The result shows that the increasing the speed of cutting machine or the diameter of blade, noise will become larger. The noise of saw blade with a hole or water slot would be greater than others without any hole or water slot.

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El-Gendy, Mohamed S., Haythem H. Abdullah, and Esmat A. Abdallah. "Slot antenna for mobile base station using AMC." International Journal of Microwave and Wireless Technologies 6, no. 5 (2014): 527–35. http://dx.doi.org/10.1017/s1759078713001128.

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In this paper, a new configuration of dual-band, dual-polarized microstrip antenna applicable to mobile base stations is proposed. The concept behind the new design is the use of an artificial magnetic conductor (AMC) structure that operates in the required two bands beneath a radiating diamond shaped slot. The choice of the diamond-shaped slot is due to its support of an infinite number of resonant modes where the dimensions of the diamond shape have more degree of freedom that controls the excited modes when compared to the rectangular slot. The proposed antenna works over the 870–960 MHz (G

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4

Ojaroudi Parchin, Naser, Haleh Jahanbakhsh Basherlou, Mohammad Alibakhshikenari, et al. "Mobile-Phone Antenna Array with Diamond-Ring Slot Elements for 5G Massive MIMO Systems." Electronics 8, no. 5 (2019): 521. http://dx.doi.org/10.3390/electronics8050521.

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A design of mobile-phone antenna array with diamond-ring slot elements is proposed for fifth generation (5G) massive multiple-input/multiple-output (MIMO) systems. The configuration of the design consists of four double-fed diamond-ring slot antenna elements placed at different corners of the mobile-phone printed circuit board (PCB). A low-cost FR-4 dielectric with an overall dimension of 75 × 150 mm2 is used as the design substrate. The antenna elements are fed by 50-Ohm L-shaped microstrip-lines. Due to the orthogonal placement of microstrip feed lines, the diamond-ring slot elements can exh

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Abdullah, Alyaa Sami, Seham A. Hashem, and Mahmood F. Mosleh. "A Design of CP-MIMO System with Elements of a Diamond-Ring Slot for 5G Mobile-Phone." Journal of Techniques 3, no. 2 (2021): 53–60. http://dx.doi.org/10.51173/jt.v3i2.334.

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This paper proposed a Circular Polarization (CP) smartphone antenna Multiple Input Multiple Output (MIMO) system with elements of a diamond ring slot for next-generation (5G). The model's composition contains four elements. Each element has a dual-fed diamond ring slot arranged at the four smartphone corners Printed Circuit Board (PCB). A cheap FR-4 substrate with using a size of 75 x 150 mm2 as the design dielectric mater. 50-Ohm microstrip-lines T-shaped feeds the antenna ports. The orthogonal positioning of microstrip feed lines is used to achieve polarization and diversity characteristics.

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6

Ge, Pei Qi, L. Zhang, W. Gao, and Zhen Chang Liu. "Development of Endless Diamond Wire Saw and Sawing Experiments." Materials Science Forum 471-472 (December 2004): 481–84. http://dx.doi.org/10.4028/www.scientific.net/msf.471-472.481.

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The endless diamond wire saw was developed using complex electroplating method. The sawing process on granite was experimented. The effects of diamond grain size, feed load, wire speed, and granite properties on sawing process were investigated. It is proved that the edges of sawing slot of granite were regulative and the cutting surfaces were smooth. The cutting efficiency could be improved by increasing the diamond grain size, wire speed, and feed load. However the increase of the feed load would induce higher tangential cutting force, and the case of the effect of wire speed was reversed.

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7

Gao, Wei, Bo Jiang Ma, Tong Kun Cao, and Zhen Chang Liu. "Researching and Manufacturing of Endless Diamond Wire Saws and the Cutting Experiment." Key Engineering Materials 359-360 (November 2007): 445–49. http://dx.doi.org/10.4028/www.scientific.net/kem.359-360.445.

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The research and manufacture of endless diamond wire saws have been reported in this paper. The matrix of saws was 65Mn steel wire whose diameter was o.8mm, and was welded as a ring by argon arc welding. The endless diamond wire saws were made by setting diamond abrasives on endless steel matrixes using nickel-plating method. The cutting experiments were carried out using the diamond wire saws on the homemade test equipment. The characteristics of the saws are narrow slot, high cutting speed, low noises and good surface quality. The surface cut could be finishing grinding or polishing directly

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8

Kang, Ki-Ju, Severine Darzens, and Gee-Seob Choi. "Effect of Geometry and Materials on Residual Stress Measurement in Thin Films by Using the Focused Ion Beam." Journal of Engineering Materials and Technology 126, no. 4 (2004): 457–64. http://dx.doi.org/10.1115/1.1789965.

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Recently, a new method for residual stress measurement in thin films by using the focused ion beam (FIB) has been proposed by the authors. It is based on the combined capability of the FIB imaging system and of high-resolution strain mapping software (VIC-2D). A simple equation based on two-dimensional elasticity is used to evaluate the residual stress from the displacements due to introducing a slot. The slot length is assumed to be much larger than the slot width or depth. And the effect of the slot width was neglected. However, it is often hard, depending on film materials, to introduce a n

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9

Wu, Aiting, Zhonghai Zhang, and Boran Guan. "Wideband Printed Antenna Design Using a Shape Blending Algorithm." International Journal of Antennas and Propagation 2017 (2017): 1–8. http://dx.doi.org/10.1155/2017/9073765.

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The shape of the tuning stub of the wide slot printed antenna is an important factor which affects the antenna’s performances. In this paper, a new design and optimization method of wideband printed slot antenna using a shape blending algorithm is presented. The proposed antenna consists of a wide rectangular slot and a tuning stub, whose profile is formed by the shape blending outcome from a pie and a diamond shape. The method is used to design an ultra-wideband antenna. The impact on the impedance bandwidth through the antenna geometry change with the different shape blending results has bee

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10

Samsuzzaman, Mohammad, Mohammad Tariqul Islam, and Mohammad Rashed Iqbal Faruque. "Dual-band Multi Slot Patch Antenna for Wireless Applications." Journal of Telecommunications and Information Technology, no. 2 (June 30, 2013): 19–23. http://dx.doi.org/10.26636/jtit.2013.2.1211.

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In this paper a novel configuration of broadband multi slot antenna for C/X bands is presented and analyzed. By cutting two diamond slots in the middle of the rectangular patch and three triangular slots in the right side of the patch, resonances can be created. Microstrip feed line is used in the down side region of the patch. Antenna characteristics were simulated using a finite element method (HFSS). According to simulations, the proposed multiple slot antennas can provide two separated impedance bandwidths of 970 MHz (about 11.96% centred at 8.11 GHz band) and 890 MHz (about 9.76% centred

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11

Astuti, Dian Widi, Agung Septian, Muslim Muslim, and Dian Rusdiyanto. "Perancangan Antena SIW Horn Untuk Meningkatkan Bandwidth Menggunakan Bentuk Patch Diamond dan Metode Slot." InComTech : Jurnal Telekomunikasi dan Komputer 14, no. 2 (2024): 119. https://doi.org/10.22441/incomtech.v14i2.22586.

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Teknologi nirkabel berkembang seiring dengan betumbuhnya kebutuhan manusia yang multifungsi. Teknologi diharapkan mampu menerapkan beberapa aplikasi dalam satu perangkat. Antena merupakan salah satu perangkat penunjang teknologi nirkabel. Penelitian ini mengajukan pengembangan performa antena yang dapat mendukung aktifitas multifungsi, salah satunya dengan meningkatkan performa bandwith antena yang lebar. Antena yang dirancang berupa antena SIW Horn dengan model patch berbentuk diamond dan penggunaan metode slot sebagai metode untuk menghasilkan bandwidth yang lebar. Antena menggunakan susbtra

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12

Liu, Yafang, Lu Zhang, Ye Tian, et al. "Design and Experimental Study of a Drilling Tool for Mars Rock Sampling." Aerospace 11, no. 4 (2024): 272. http://dx.doi.org/10.3390/aerospace11040272.

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Martian rocks contain crucial information about the genesis of Mars and the historical evolution of Martian climate change. Consequently, extracting and examining Martian rocks are pivotal in advancing our comprehensive understanding of the red planet. However, the current core drill string is prone to wear and tear, and the samples are susceptible to thermal denaturation. To address these challenges, we introduce two novel types of drill bits, the conical straight junk slot and the conical spiral junk slot, both employing impregnated diamond as the primary material. Comparative experiments we

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13

Zhao, Hong Shan, and Kun Zhang. "Development and Application of a Cutting - Abrasive Impregnated Diamond Bit." Advanced Materials Research 900 (February 2014): 570–74. http://dx.doi.org/10.4028/www.scientific.net/amr.900.570.

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Igneous rocks of Junggar Basin are hard, strong abrasive and poor drillability. ROP is low in drilling these rocks, and drilling cycle is long, which seriously affect the process of exploration and development in the Carboniferous reservoir. Considering the igneous rock formation characteristics and the drilling problems, using PDC impregnated diamond high strength, super abrasion as the main rock breaking device, a new type of cutting and grinding of diamond impregnated bit was developed. This bit has the following characteristics: Compound cutting structure with blades and cylindrical Impreg

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14

Pin, Yan, Xiaoyuan Wen, Xiaodan Hu, et al. "Investigation of enhanced heat transfer in hollow blade by diamond-inspired structure for dehumidification in steam turbine." Thermal Science, no. 00 (2024): 265. https://doi.org/10.2298/tsci240812265p.

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Wet steam erosion plays a pivotal role in influencing the efficient and safe operation of steam turbines. The dehumidification technique, which combines hollow blade heating and purging, exhibits significant performance in the low-pressure, long-blade stages. However, the hollow structure has a pronounced impact on blade strength and often results in low heat transfer efficiency. In this study, we introduce a turbulence generator inspired by the diamond lattice bonding to modify the internal channel structure of hollow long blades. This diamond-inspired structure aims to enhance turbulence wit

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15

Miyamoto, Kei, Katsuji Shimizu, Ken Kouda, and Hideo Hosoe. "Removal of broken pedicle screws." Journal of Neurosurgery: Spine 95, no. 1 (2001): 150–51. http://dx.doi.org/10.3171/spi.2001.95.1.0150.

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✓ The authors describe a simple, new method for removing broken pedicle screws. Under microscopic visualization a straight, narrow slot is etched in the broken surface of the pedicle screw by using a power drill with a 2-mm diamond burr. A minus screwdriver is then inserted into the slot, and the broken screw is rotated and removed. There is no need to enlarge the screw hole around the broken screw or to use any special devices. The authors succeeded in removing broken screws in two cases, and there were no complications. This method allows preservation of both the pedicle and the screw hole.

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16

Kono, Daisuke, and Atsushi Matsubara. "Investigation of Copying Rate of Tool Motions on Workpiece Profile." Key Engineering Materials 447-448 (September 2010): 121–25. http://dx.doi.org/10.4028/www.scientific.net/kem.447-448.121.

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The copying characteristic of the tool motion on the workpiece profiles is investigated. Assuming that the workpiece profile consists of sinusoidal-wave components, the amplitude ratio between the workpiece profile and the tool motion is defined as copying rate . An experiment was conducted to identify in shaping of electroless plated nickel. With polycrystalline diamond tools, the copying rate was obtained as =1.16. The result indicates that the amplitude of the workpiece profile can be larger than that of the tool motion. Shaping of slot profiles was carried out to investigate the influences

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17

Park, Yeong Min, Moon Ki Han, Mun Ki Bae, and Tae Gyu Kim. "Low Temperature Growth of CVD Nanocrystalline Diamond Thin Film by Designed SWP-CVD with Various Working Pressures." Nanoscience and Nanotechnology Letters 11, no. 9 (2019): 1292–97. http://dx.doi.org/10.1166/nnl.2019.2999.

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Nanocrystalline diamond (NCD) is exceptionally useful for a variety of applications and is of significant interest to researchers in technological and scientific fields due to its excellent mechanical and chemical properties, such as its hardness and high thermal conductivity. We have modified a microwave plasma chemical vapor deposition (MPCVD; Astex Inc.) system with a slot antenna designed for surface wave plasma (SWP) and successfully fabricated high quality thin NCD film. This SWP-CVD process fabricates high quality diamond film at 300 °C, while a normal MPCVD process requires the tempera

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18

Nabil, Menna, Hussein H. Ghouz, Sherif El-Diasty, and Mohamed Edris. "Novel Slot-MIMO Antenna Approach for Improved Connectivity in Sub-6 GHz Applications." Journal of Advanced Research in Applied Sciences and Engineering Technology 50, no. 2 (2024): 103–18. http://dx.doi.org/10.37934/araset.50.2.103118.

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This paper presents a proposed Slot-MIMO antenna with two identical ports, each port is fed through 50-Ohm microstrip line to operate within the sub-6 GHz (3.5-4.5 GHz) for fifth-generation (5G) cellular phone applications. The proposed MIMO antenna has been designed on FR-4 dielectric substrate (ɛ = 4.4, δ = 0.025, and h = 1.6 mm). The ground has two basic slots, one square slot radiator, and one irregular square slot radiator filled with a Diamond conductor shape. In addition, the ground has a DGS structure (8-slots) beside the two basic slots. The ground DGS is used to adjust the resonance

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19

Kokko, E. G., B. Gowen, and C. R. Jahnke. "An inexpensive water volume control device for ultramicrotomy." Proceedings, annual meeting, Electron Microscopy Society of America 48, no. 3 (1990): 732–33. http://dx.doi.org/10.1017/s0424820100161229.

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Numerous techniques and related devices have been reported for preparing serial thin-sections with an ultramicrotome for transmission electron microscopy. The section pickup method, a continuous serial thin-sectioning technique developed by Farenbach (1984), is helpful for: (a) three-dimensional EM reconstruction (Todd et.al. 1989) and (Farenbach 1984), (b)section thickness determinations of thick (LM) or thin (EM) sections using the “section piling - resectioning” technique of Sakai (1980), (c) insuring that important or rare EM sections (such as from a reembedded 0.5 urn LM section) are pick

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20

Park, Sungil, Sangjin Lee, Seopong Byun, and Seoungtack Hwang. "Optimization of Slot Location for Stress Distribution in Rotating Disc of Diamond Tools." Korean Journal of Materials Research 15, no. 9 (2005): 560–65. http://dx.doi.org/10.3740/mrsk.2005.15.9.560.

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21

Tan, Yingying, Liping Yan, Xiang Zhao, Changjun Liu, and Ka-Ma Huang. "BANDWIDTH ENHANCEMENT OF A PRINTED SLOT ANTENNA WITH A DIAMOND-SHAPED TUNING STUB." Progress In Electromagnetics Research C 50 (2014): 87–93. http://dx.doi.org/10.2528/pierc14032404.

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22

Naser-Moghadasi, Mohammad, Mohsen Koohestani, Mohsen Golpour, and Bal S. Virdee. "Ultra-wideband square slot antenna with a novel diamond open-ended microstrip feed." Microwave and Optical Technology Letters 51, no. 4 (2009): 1075–80. http://dx.doi.org/10.1002/mop.24242.

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23

Pan, Wen Cheng, Bramha Kondaiah, Song Lin Ding, and John Mo. "Tool Wear and Surface Integrity in End Milling of Ti6Al4V with Polycrystalline Diamond Tools." Advanced Materials Research 820 (September 2013): 134–37. http://dx.doi.org/10.4028/www.scientific.net/amr.820.134.

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Titanium is a difficult-to-machine material due to its low heat conductivity and high chemical reactivity. It creates high tool wear and causes low machining efficiency. The strong relationship cutting forces between and tool wear and surface integrity of work piece makes it necessary to study the effect of dynamic cutting force on cutting tools to analyse the wear propagation and tool life. This paper investigates the tool wear on Polycrystalline Diamond (PCD) cutters in milling Ti-6Al-4V and analyses workpiece surface quality. Based on the experimental results of slot milling, cutting parame

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24

Raed, Abdulkareem Abdulhasan, Nidzam Ramli Khairun, Alias Rozlan, Audah Lukman, and Rashid Omar Mumin Abdul. "Inverted Diamond-shaped Notched Substrate and Patch for High-frequency Interference on Ultra-wideband Antenna." International Journal of Electrical and Computer Engineering (IJECE) 7, no. 6 (2017): 2929–35. https://doi.org/10.5281/zenodo.4072741.

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Notches loaded on a patch antenna can affect significantly on &lrm;the antenna impedance matching. Therefore, notching technique is an efficient way to reduce &lrm;the electromagnetic interference with unwanted bands. In this paper, a &lrm;novel inverted diamond &rlm;-&rlm; shaped closed-end slot on a substrate and &lrm;vertexfed printed hexagonal patch ultra &rlm;-&rlm; wideband antenna is proposed for highfrequency band rejection. This antenna is fed using &lrm;coplanar waveguide, and it is optimised by veering several patch &lrm;parameters which further improved the inter bandwidth at both

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25

Ye, Liuqing, Zhengyin Ye, and Boping Ma. "An active control method for reducing sonic boom of supersonic aircraft." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 39, no. 3 (2021): 566–75. http://dx.doi.org/10.1051/jnwpu/20213930566.

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Sonic boom reduction has been an urgent need to develop the future supersonic transport, because of the heavy damages of the noise pollution. This paper provides an active control method for the supersonic aircraft to reduce the sonic boom, wherein a suction slot near the leading edge and an injection slot near the trailing edge on the airfoil suction surface are opened, and the mass flow sucked in near the leading edge is equal to the mass flow injected near the trailing edge. The diamond and 566 airfoils are adopted as the baseline airfoil to verify the capability of the active control metho

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C. P, MAHESH, and P. M. HADALGI. "Proximity Coupled Equilateral Triangular Microstrip Antenna with Diamond Shape Slot for Dual Band Operation." International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering 3, no. 11 (2014): 13115–19. http://dx.doi.org/10.15662/ijareeie.2014.0311025.

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27

Hu, Shan Shan, Li Ang He, Ying Ning Hu, and Cheng Yong Wang. "Failure Mechanism of Diamond Saw Blade Sawing Concrete." Materials Science Forum 1018 (January 2021): 169–76. http://dx.doi.org/10.4028/www.scientific.net/msf.1018.169.

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Sawing concrete with diamond saw blade is a complex process with alternating loading. However, due to the poor working conditions of the thin circular blade made of high manganese steel core, and the lack of research on its failure mechanism, a large number of used blade are abandoned every year in China and all over the world without steel core reused. Therefore, exploring the failure mechanism of diamond saw blade can improve the cutting quality and efficiency, and extend the service life of the saw blade. In this paper, the failure mechanism of diamond saw blade sawing concrete was analyzed

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28

Kim, J., K. Tsugawa, M. Ishihara, Y. Koga, and M. Hasegawa. "Large-area surface wave plasmas using microwave multi-slot antennas for nanocrystalline diamond film deposition." Plasma Sources Science and Technology 19, no. 1 (2009): 015003. http://dx.doi.org/10.1088/0963-0252/19/1/015003.

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29

Fan, Fang-Fang, Ze-Hong Yan, and Wei Wang. "Wideband Circularly Polarized SIW Antenna Array That Uses Sequential Rotation Feeding." International Journal of Antennas and Propagation 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/534539.

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A wideband right-handed circularly polarized (CP) substrate integrated waveguide- (SIW-) based diamond ring-slot antenna array at the X-band is presented in this study. The array consists of four elements that exhibit wideband impedance matching characteristics and good radiation performance. The array also employs a sequential rotation feeding method to achieve the wideband axial ratio (AR) bandwidth. The feeding network is based on the SIW power divider with a delay line related to sequential rotation feeding. To validate our design, an antenna array is fabricated and measured. The measured

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30

Wu, Aiting, Zhonghai Zhang, Boran Guan, and Liang Peng. "Achievement of Various Widebands: A Design of Wide-Slot Antennas Using Shape Blending." International Journal of Antennas and Propagation 2018 (2018): 1–9. http://dx.doi.org/10.1155/2018/5140413.

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When designing printed wide-slot antennas, the shape or profile of the tuning stub is a key geometric structure that affects the impedance bandwidth of the antenna. This article introduces a new process for designing tuning stub shapes, which are the blended results of a diamond and a circle. By using different geometry shapes, the design could generate a series of bandwidths with a regular trend. Detailed investigations and analysis were conducted on some key geometry parameters to explore their impact on the impedance bandwidth of the antenna. To certify the new design method, several protot

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Koohestani, Mohsen, and Mohsen Golpour. "Compact rectangular slot antenna with a novel coplanar waveguide fed diamond patch for ultra wideband applications." Microwave and Optical Technology Letters 52, no. 2 (2009): 331–34. http://dx.doi.org/10.1002/mop.24899.

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Al-Hmoud, Mohannad, and Smail Bougouffa. "Simultaneous high Q/V-ratio and optimized far-field emission pattern in diamond slot-bridge nanobeam cavity." Results in Physics 26 (July 2021): 104314. http://dx.doi.org/10.1016/j.rinp.2021.104314.

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Mahajan, Deepak, and Dinesh Singh. "DELAMINATION STUDY OF SLOT MILLED JUTE FIBER REINFORCED POLYMER BY USE OF POLYCRYSTALLINE DIAMOND STRAIGHT END MILLS." INTERNATIONAL JOURNAL OF DESIGN AND MANUFACTURING TECHNOLOGY 16, no. 1 (2025): 1–13. https://doi.org/10.34218/ijdmt_16_01_001.

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Mahajan, Deepak, and Dinesh Singh. "PROCESS PARAMETER OPTIMIZATION IN SLOT MILLING OF JUTE FIBER REINFORCED POLYMER USING POLYCRYSTALLINE DIAMOND STRAIGHT END MILLS." INTERNATIONAL JOURNAL OF MECHANICAL ENGINEERING AND TECHNOLOGY (IJMET) 16, no. 2 (2025): 18–41. https://doi.org/10.34218/ijmet_16_02_002.

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35

Liu, Zhongyuan, and Binqian Zhang. "Investigation on a Flow Coupling Rudder for Directional Control of a Low-Aspect Tailless Configuration with Diamond-Shaped Wing." Aerospace 9, no. 2 (2022): 79. http://dx.doi.org/10.3390/aerospace9020079.

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To solve the issues of directional control and aerodynamic moment coupling for a low-aspect tailless configuration with a diamond-shaped wing, we herein propose the concept of a flow coupling rudder (FCR). The FCR was composed of two basic control surfaces: a spoiler slot deflector (SSD) on the upper surface of the wing and the corresponding elevon. With the constraints of the fixed area and spanwise position of the SSD, the effects of the leading-edge sweep angle, chord position of the SSD, and collocating deflection angles of the SSD and elevon on the control characteristics of the configura

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36

Celio, G. J., E. A. Richardson, and C. W. Mims. "Ultrastructure of the Infection of Poinsettia by Oidium SP. using High Pressure Freezing and Freeze Substitution." Microscopy and Microanalysis 6, S2 (2000): 690–91. http://dx.doi.org/10.1017/s1431927600035947.

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Cryofixation is becoming more widely used to study host-pathogen relationships in fungal diseases of plants. This presentation describes results we have obtained using high pressure freezing and freeze substitution to study powdery mildew disease of poinsettia ﹛Euphorbia pulcherrima) caused by Oidium sp.Approximately 0.5 mm leaf disks bearing sporulating colonies of Oidium sp. were excised and placed in a 15% dextran solution contained in brass planchets. Samples were frozen using a Balzer's HPM 010 High Pressure Freezing Machine and substituted according to the procedures of Hoch.6 Thin secti

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Idrees, Muhammad. "8x8 Massive Multiple Input Multiple Output (MIMO) Antenna Array with Diamond-Ring Slot for 5G and 6G Cellular Applications." Asian Bulletin of Big Data Management 5, no. 2 (2025): 1–7. https://doi.org/10.62019/8xawy023.

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In this research paper, an 8x8 antenna Massive MIMO array, with diamond ring slots elements for 5G and 6G cellular networks has been designed using Computer Simulation Technology (CST) Microwave Studio Software. The configuration of the design consisting of eight double-fed diamond ring slot antenna elements placed at different corners of the printed circuit board (PCB). A low cast FR-4 (lossy) dielectric with an overall dimension of 75x150 mm2 is used as the designed substrate. Moreover, a common ground of copper pure (lossy) metal is also used. For antenna elements copper annealed material i

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38

Fawad, Yasir, Sadiq Ullah, Muhammad Irfan, et al. "Dual-polarized 8-port sub 6 GHz 5G MIMO diamond-ring slot antenna for smart phone and portable wireless applications." PLOS ONE 18, no. 11 (2023): e0288793. http://dx.doi.org/10.1371/journal.pone.0288793.

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This manuscript presents high performance dual polarized eight-element multiple input multiple output (MIMO) fifth generation (5G) smartphone antenna. The design consists of four dual-polarized microstrip diamond-ring slot antennas, positioned at corners of printed circuit board (PCB). Cheap Fr-4 dielectric with permittivity 4.3 and thickness of 1.6mm is used as substrate with overall dimension of 150 × 75 × 1.6 mm3. In mobile system due to limited space mutual coupling between nearby antenna elements is an issue that distort MIMO antenna performance. Defected ground structure is used to contr

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Danisman, Hikmetnur, Fatih Celebi, Sengul Danisman, and Ali Altug Bicakci. "Effects of diamond-like carbon coating on frictional and mechanical properties of orthodontic brackets: An in vitro study." APOS Trends in Orthodontics 12 (December 17, 2021): 13–19. http://dx.doi.org/10.25259/apos_79_2021.

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Objectives: The aim of this study is to apply a diamond-like carbon (DLC) coating on orthodontic brackets and to examine the effects of the coating on surface properties and friction. Material and Methods: 0.022-inch upper right canine brackets, 0.018-inch stainless steel wires, and 0.019 × 0.025-inch stainless steel wires were used in the study. Half of the brackets were treated with physical vapor deposition technique and coated with DLC. Different binary groups constituted of coated and uncoated brackets and wires were subjected to friction experiments using the Instron universal testing ma

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Yikilgan, İhsan, Nagihan Guven, Cemile Kedıcı Alp, Emre Tokar, Ozgur Topuz, and Hanife Kamak. "Efficacy of Palatal Applications on Fracture Resistance of Reattached Maxillary Central Incisors: AnIn VitroStudy." Applied Bionics and Biomechanics 2017 (2017): 1–5. http://dx.doi.org/10.1155/2017/9124545.

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The purpose of this study was to evaluate the effects of different palatal applications on fracture strength of the fractured anterior tooth. Sixty caries-free human maxillary incisors were used. Endodontic treatments of the teeth were performed. Then, the teeth were divided randomly into five groups (n=12). Crowns of all teeth in groups A–D were cut with diamond discs at a fixed distance of 3 mm from the incisal margin in a plane normal to the buccal surface. In all groups, coronal fragments were reattached to the remaining teeth by bonding with hybrid composite resin. After then, the teeth w

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Duraisamy, Sangeetha, and Nirmala Anandan. "Evaluation of cytotoxicity of copper oxide and zinc oxide hybrid nanocoated orthodontic brackets." Journal of Contemporary Orthodontics 8, no. 2 (2024): 149–55. http://dx.doi.org/10.18231/j.jco.2024.024.

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Using a combination of two nanoparticles for coating stainless orthodontic brackets might alter their potential cytotoxicity. The study investigated the cytotoxicity of brackets nanocoated with copper oxide, zinc oxide and a combination of both the particles. Stainless steel orthodontic brackets (Ormco Mini -Diamond series 0.22” slot, MBT prescription) (ORMCO CORP Glendora, California, USA) (n= 31 in each group) were coated with nanoparticles of copper oxide, zinc oxide and a combination of copper oxide –zinc oxide using a spray pyrolysis method. The brackets was assessed for cytotoxicity in m

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Жихарев, А. М., Е. А. Ищенко, С. М. Фёдоров, and И. А. Черноиваненко. "DUAL-BAND SLOT ANTENNA FOR SMARTPHONE WITH MIMO TECHNOLOGIES." ВЕСТНИК ВОРОНЕЖСКОГО ГОСУДАРСТВЕННОГО ТЕХНИЧЕСКОГО УНИВЕРСИТЕТА, no. 1 (March 14, 2022): 112–16. http://dx.doi.org/10.36622/vstu.2022.18.1.013.

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Рассматривается многодиапазонная восьмипортовая MIMO антенная решетка для сетей четвертого (4G) и пятого (5G) поколений (sub-6 GHz), которая позволяет охватывать два спектральных диапазона. Для достижения многолучевого режима работы в углы печатной платы смартфона интегрированы двухэлементные ромбовидные излучатели с технологией подачи микрополосковых линий. В связи с доступностью изготовления рабочего прототипа антенны и простотой интеграции системы MIMO в печатную плату телефона разрабатываемая система MIMO 4x4 реализовывается на основе щелевых антенн-излучателей. Для предложенной конструкци

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Sadek, Dalia H., Heba A. Shawkey, and Abdelhalim A. Zekry. "Compact and High-Efficiency Rectenna for Wireless Power-Harvesting Applications." International Journal of Antennas and Propagation 2021 (December 15, 2021): 1–8. http://dx.doi.org/10.1155/2021/1109850.

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A compact, single-layer microstrip rectenna for dedicated far-field RF wireless power-harvesting applications is presented. The proposed rectenna circuit configurations including multiband triple L-Arms patch antenna with diamond slot ground are designed to resonate at 10, 13, 17, and 26 GHz with 10 dB impedance bandwidths of 0.67, 0.8, 2.45, and 4.3 GHz, respectively. Two rectifier designs have been fabricated and compared, a half wave rectifier with a shunted Schottky diode and a voltage doubler rectifier. The measured and simulated maximum conversion efficiencies of the rectifier using the

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Mohammed, Huda A., and Omar S. Ali. "Three-Dimensional Surface Evaluation and Shear Bond Strength of Three Pre-treatment E-max Surfaces for Metal and Ceramic Orthodontic Brackets." Polytechnic Journal 10, no. 2 (2020): 113–18. http://dx.doi.org/10.25156/ptj.v10n2y2020.pp113-118.

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3D evaluation and shear bond strength (SBS) for metal and ceramic brackets after three pre-treatment surfaces of lithium disilicate (LD) crowns. Sixty lithium disilicate (LD) crowns were fabricated in laboratory according to manufacturer instruction and then divided into six groups (three groups for metal brackets and three groups for ceramic one). The 1st group for both was treated with round diamond bur, the 2nd one by hydrofluoric acid (HFA) 9.0%, and the 3rd group by laser (Er,Cr:YSGG). All treated surfaces were examined by laser profilometer and scan electron microscope. The Scotchbond Un

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Duraisamy, Sangeetha, Nirmala Anandan, and Digvijay Patil. "A spectrophotometric analysis of copper and zinc released from stainless steel brackets coated with a combination of copper oxide and zinc oxide nanoparticles in artificial saliva." Journal of Contemporary Orthodontics 8, no. 3 (2024): 267–74. http://dx.doi.org/10.18231/j.jco.2024.040.

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Nanocoating stainless steel orthodontic brackets with a combination of copper and zinc oxide nanoparticles might alter the quantity of ions released from them in saliva. The purpose of the study was to evaluate the quantity of copper and zinc ions released from stainless steel brackets coated with a combination of copper oxide and zinc oxide. Stainless steel orthodontic brackets (Ormco Mini -Diamond series 0.22” slot, MBT prescription) (ORMCO CORP Glendora, California, USA) (n= 15 in each group) were coated with nanoparticles of copper oxide (Group I) , zinc oxide (Group II) and a combination

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Royer, S. M., and J. C. Kinnamon. "A serial section analysis of rabbit foliate taste buds using the high voltage electron microscope." Proceedings, annual meeting, Electron Microscopy Society of America 47 (August 6, 1989): 966–67. http://dx.doi.org/10.1017/s042482010015681x.

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We have examined the foliate taste buds of the rabbit using a combination of serial section analysis and computer-assisted three-dimensional (3-D) reconstructions. Previous investigators of rabbit foliate taste buds have classified taste cells into types I, II, and III, basal cells, and peripheral cells. Based on the presence of synaptic contacts with nerve processes, only the type III cells have been considered to be taste receptor cells. Our goals were the elucidation of morphological details of the various cell types and the characterization and quantification of synaptic contacts between t

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Mims, C. W., and E. A. Richardson. "Freeze substitution fixation of fungal reproductive structures and spores." Proceedings, annual meeting, Electron Microscopy Society of America 47 (August 6, 1989): 990–91. http://dx.doi.org/10.1017/s0424820100156936.

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The advantages of freeze substitution fixation over conventional chemical fixation for preservation of ultrastructural details in fungi have been discussed by various authors. As most ascomycetes, basidiomycetes and deuteromycetes do not fix well using conventional chemical fixation protocols, freeze substitution has attracted the attention of many individuals interested in fungal ultrastructure. Thus far most workers using this technique on fungi have concentrated on thin walled somatic hyphae. However, in our laboratory we have experimented with the use of freeze substitution on a variety of

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Zhang, Ming Song, Pu Xian Zhu, Jian Jun Ke, and Yi Kuan Zhu. "Diamond Circular Saw Blades Noise Attenuation and Finite Element Modal Analysis." Applied Mechanics and Materials 444-445 (October 2013): 129–33. http://dx.doi.org/10.4028/www.scientific.net/amm.444-445.129.

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The finite element modal analysis was used to study natural frequency of circular saw blade, when slotted. Finding the frequency of slotted is smaller than no slotted saw blade, showing that slot can have the effect of noise attenuation. The increasing of slot length, slot width, slot position, slot number can reduce the natural frequency of circular saw blade on the whole. The orthogonal text was used to study slot parameters. Finding that slot parameters’ influence of primary and secondary relations on saw blade first five natural frequency is slot position > slot number> slot length &

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Abdulhasan, Raed Abdulkareem, Khairun Nidzam Ramli, Rozlan Alias, Lukman Audah, and Abdul Rashid Omar Mumin. "Inverted Diamond-shaped Notched Substrate and Patch for High-frequency Interference on Ultra-wideband Antenna." International Journal of Electrical and Computer Engineering (IJECE) 7, no. 6 (2017): 2929. http://dx.doi.org/10.11591/ijece.v7i6.pp2929-2935.

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<span>Notches loaded on a patch antenna can affect significantly on </span><em><span lang="AR-SA">‎</span></em><span>the antenna impedance matching. Therefore, notching technique is an efficient way to reduce </span><em><span lang="AR-SA">‎</span></em><span>the electromagnetic interference with unwanted bands. In this paper, a </span><em><span lang="AR-SA">‎</span></em><span>novel inverted diamond</span><em><span lang="AR-SA" dir="RTL">‏-‏</span></em>&

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Kang, Minqiang, Yongfa Qiang, Canlin Zhu, et al. "Hybrid Dissection for Neutron Tube Shell via Continuous-Wave Laser and Ultra-Short Pulse Laser." Micromachines 13, no. 3 (2022): 352. http://dx.doi.org/10.3390/mi13030352.

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The sealed neutron tube shell dissection process utilizing the traditional lathe turning method suffers from low efficiency and high cost due to the frequency of replacement of the diamond knife. In this study, a hybrid dissection method is introduced by combining the continuous-wave (CW) laser for efficient tangential groove production with an ultra-short pulse laser for delamination scanning removal. In this method, a high-power CW laser is firstly employed to make a tapered groove on the shell’s surface, and then a femtosecond pulse laser is used to micromachine the groove in order to obtai

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