Prototyping PCB Menggunakan Computer-Aided Design

Perkembangan Teknologi yang semakin meningkat dan berkembang dapat memudahkan orang-orang yang kreatif dalam merancang system dan elektronik. Pada elektronik terdapat komponen yang sangat penting untuk menunjang komponen dan memberikan jalur penghubung antar komponen yaitu papan PCB. Sebelum adanya technology CAD untuk membuat PCB para pengembang technology Smart System/Internet of Things masih membuat PCB dengan cara manual namun seiring berjalannya waktu dan dengan berkembangnya teknologi sekarang membuat PCB sudah mudah dengan adanya Computer-Aided Design (CAD). Teknik awal seorang pengembang IoT/Smart System membuat PCB yaitu masih dengan cara membuat tata letak komponen dan menyesuaikan skala dengan komponennya setelah itu baru proses menggambar jalur menggunakan spidol permanen yang dibuat sedemikian rupa dengan apa yang telah digambarkan terlebih dahulu baru dilakukannya proses eatching. Setelah adanya technology CAD terdapat banyak perubahan disetiap tahap pembuatannya jadi tidak perlu menggambar tata letak komponen dan menyesuaikan sklanya dengan CAD itu semua sudah otomatis di tentukan. Pada pembuatan PCB dengan CAD bisa menampilkan bagian silk atau gambar bagian depan sehingga bagian silk tersebut bisa ditempel ke bagian atas PCB untuk memudahkan menentukan tempat komponennya. Proses pembuatannya juga lebih efisien dan lebih teratur dengan menggunakan CAD dari pada membuat secara manual sehingga dengan adanya Computer-Aided Design (CAD) sangat membantu dalam proses pembuatan desain PCB.

Application of CAD Technology in Building Decoration Construction

With the rapid development of science and technology, the application scope of computer technology and related software is expanding, while improving the work efficiency of various industries, the quality of people’s work has also been greatly improved. In particular, as an important part of China’s economic development, the construction industry has gradually applied some new technical means, and achieved remarkable application results. CAD technology drawing can not only improve the standardization of scheme design, but also effectively shorten the time, which is of great significance to the improvement of construction quality. This paper focuses on the application of computer technology (CAD) in the construction of building decoration, and hopes to provide reference and suggestions for relevant personnel.

Technology CAD (TCAD) Simulations of Mg2Si/Si Heterojunction Photodetector Based on the Thickness Effect

Research on infrared detectors has been widely reported in the literature. For infrared detectors, PbS, InGaAs, PbSe, InSb, and HgxCd1-xTe materials are the most widely used and have been explored for photodetection applications. However, these are toxic and harmful substances which are not conducive to the sustainable development of infrared detectors and are not eco-friendly. Mg2Si is a green, healthy, and sustainable semiconductor material that has the potential to replace these toxic and damaging photoelectric materials, making photoelectric detectors (PDs) green, healthy, and sustainable. In this work, we report on the results of our simulation studies on the PN junction Mg2Si/Si heterojunction PD. A model structure of Mg2Si/Si heterojunction PD has been built. The effects of Mg2Si and Si layer thickness on the optical and electrical performance of Mg2Si/Si heterojunction PD are discussed. For the purpose of this analysis, we consider electrical performance parameters such as I–V curve, external quantum efficiency (EQE), responsivity, noise equivalent power (NEP), detectivity, on-off ratio, response time, and recovery time. The simulation results show that the Mg2Si/Si heterojunction PD shows optimum performance when the thickness of Si and Mg2Si layers are 300 nm and 280 nm, respectively. For the optimized structure, the reverse breakdown voltage was found to be −23.61 V, the forward conduction voltage was 0.51 V, the dark current was 5.58 × 10−13 A, and the EQE was 88.98%. The responsivity was found to be 0.437 A/W, the NEP was 6.38 × 10−12 WHz1/2, and the detectivity was 1.567 × 1011 Jones. With the on-off ratio of 1566, the response time was found to be 0.76 ns and the recovery time was 5.75 ns. The EQE and responsivity peak wavelength of PD show a redshift as the thickness of Mg2Si increases. The Mg2Si heterojunction PD can effectively detect infrared light in the wavelength range of 400 to 1400 nm. The simulation results can be utilized to drive the development of green Mg2Si/Si heterojunction PD in the future.

TCAD Modeling of Surface Radiation Damage Effects: A State-Of-The-Art Review

A comprehensive numerical model which accounts for surface damage effects induced by radiation on silicon particle detectors is presented with reference to the state-of-the-art Synopsys Sentaurus Technology CAD (TCAD) tool. The overall aim of this work is to present the “Perugia 2019 Surface” damage modeling scheme, fully implemented within the TCAD environment, which effectively describes the surface damage effects induced by radiation in silicon sensors relying on a limited number of parameters relevant for physics. To this end, extensive measurement campaigns have been recently performed on gated-diodes and MOS capacitors at Fondazione Bruno Kessler (FBK) in Italy, Hamamatsu Photonics (HPK) in Japan and Infineon Technologies (IFX) in Austria on both n-type and p-type substrates (with and without p-spray isolation implants), in order to extrapolate the relevant parameters which rule the surface damage effects. The integrated interface trap density and the oxide charge density, have been determined before and after X-ray irradiation with doses ranging from 0.05 to 100 Mrad(SiO2), for each specific foundry and technology flavor. The main guidelines of this study are the versatility and generality of the simulation approach.

Review of Different Materials that can be CAD/CAM Processed Description, chemical composition, indications in dentistry areas

The objective of this paper is to inform on the indications, appearance and advantages offered by each category of materials used in CAD / CAM technique for different prosthetic restorations.Modern techniques in restorative dentistry include CAD/CAM systems and materials that can be CAD/CAM processed. It is very important to know the physical-chemical properties and the indications of these materials to translate the patient’s wishes to reality providing the ideal restoration. There are a variety of CAD/CAM materials to choose from, all designed to provide efficient restoration design and production. We can choose from available materiales including glass ceramics, nano ceramics, zirconia, hybrid ceramics, BioHPP, in blocks or disks form. Keywords: CAD/CAM technology, CAD/CAM materials, properties, indications

TCAD Model Calibration of High Voltage 4H-SiC Bipolar Junction Transistors

In this project, a Technology CAD (TCAD) model has been calibrated and verified against experimental data of a 15 kV silicon carbide (SiC) bipolar junction transistor (BJT). The device structure of the high voltage BJT has been implemented in the Synopsys Sentaurus TCAD simulation platform and design of experiment simulations have been performed to extract and fine-tune device parameters and 4H-SiC material parameters to accurately reflect the 15 kV SiC BJT experimental results. The set of calibrated TCAD parameters may serve as a base for further investigations of various SiC device design and device operation in electrical circuits.

Scan and Print: A Digital Design Method for Wearable Products

Product designers create the beautiful products we use every day from iPhones to eyewear. Every product aspires to mesh seamlessly with the human body. The wearable technology market is increasing the demand for more advanced, better fitting designs. As our technology moves closer to the body, the demand for better-fitted body products increases, and the challenge for designers grows. The scan and print method uses 3D scan technology, CAD design software, and 3D printing to create the next generation of better fitting wearable products with shorter lead-times and improved fit.

RESTORATION OF DEFECTS IN CERAMIC VENEER FRAME PROSTHETIC TECHNOLOGY CAD/CAM

In the article options of chipping of the ceramic veneer metal-ceramic fixed prostheses Zirconia or frameworks, including those based on dental implants. The variants of elimination of such defects are described by the degree of complication. Special attention is paid to the method of restoration of defective ceramic cladding by means of preparation of facing ceramics, scanning by CEREC intraoral scanner, milling of ceramic restoration and its fixation to the place of chipping. The author’s experience from six months to five years has shown the high efficiency of this method of repair of ceramic cladding.