Magnetic Materials and Design Trade-Offs for High Inductance Density, High-Q and Low-Cost Power and EMI Filter Inductors

2016 ◽  
Author(s):  
Teng Sun ◽  
P. Markondeya Raj ◽  
Junki Min ◽  
Zihan Wu ◽  
Himani Sharma ◽  
...  
Keyword(s):  
Magnetic Materials ◽  
Low Cost ◽  
High Q ◽  
Trade Offs ◽  
Emi Filter

A PCB Sensor for Magnetic Materials

2019 ◽  
Vol 2019 (DPC) ◽  
pp. 001323-001342
Author(s):  
Robert N. Dean ◽  
Lauren E. Beckingham
Keyword(s):  
Magnetic Materials ◽  
Printed Circuit Board ◽  
Low Cost ◽  
Complex Impedance ◽  
Corrosion Products ◽  
Physical Contact ◽  
Circuit Board ◽  
Sensor Technology ◽  
Printed Circuit ◽  
Surrounding Environment

Printed circuit board (PCB) sensors are a sensor technology where the layout of traces on a PCB has been optimized so that the traces electromagnetically interact with the surrounding environment. These types of sensors can be manufactured at very low cost using standard commercially available low-cost printed circuit board fabrication. Exposed conductive electrodes on the circuit board are useful for measuring the electrical conductivity of the surrounding environment, and these sensors have been used in applications such as salinity measurement and dissolved ion content measurement of aqueous solutions. Insulated interdigitated electrode sensors are useful for capacitively analyzing the surrounding environment, and these sensors have been used to detect the presence of liquid water and to measure the moisture content of substances in physical contact with the sensor. Additionally, by measuring the complex impedance of the capacitive sensor over a wide frequency range, information concerning the chemical composition of the substance in contact with the sensor can be determined. In addition to conducive and capacitive PCB sensors, the third type of PCB sensor would be an inductive sensor. Although it is challenging to realize 3D coils in PCB technology, planar inductors can be realized in a single Cu layer on a PCB, and insulated from the environment using a cover layer of polymeric solder mask. This type of electrode structure can inductively couple with magnetic materials in close proximity to the sensor. A variety of magnetic materials exist, including iron, nickel and cobalt. Additionally, many alloys of these elements are also magnetic. Of particular interest are corrosion products with magnetic properties, such as iron(III) oxide, Fe3O2, also known as common rust. A thin layer of iron(III) oxide powder deposited on the sensor's active area results in a measureable increase in the sensor's inductance. As such, an inductive PCB sensor could be a low-cost option for detecting the presence of some corrosion products in its operating environment.

scholarly journals High performance of low cost soft magnetic materials

2011 ◽  
Vol 34 (7) ◽  
pp. 1407-1413 ◽  
Author(s):  
Josefina M. Silveyra ◽  
Emília Illeková ◽  
Marco Coïsson ◽  
Federica Celegato ◽  
Franco Vinai ◽  
...  
Keyword(s):  
Magnetic Materials ◽  
High Performance ◽  
Low Cost ◽  
Soft Magnetic Materials ◽  
Soft Magnetic

SIMULINK-BASED HW/SW CODESIGN OF EMBEDDED NEURO-FUZZY SYSTEMS

2000 ◽  
Vol 10 (03) ◽  
pp. 211-226 ◽  
Author(s):  
L. M. Reyneri ◽  
M. Chiaberge ◽  
L. Lavagno ◽  
B. Pino ◽  
E. Miranda
Keyword(s):  
Embedded Systems ◽  
Fuzzy Systems ◽  
High Speed ◽  
Low Cost ◽  
Performance Criteria ◽  
Functional Specification ◽  
Trade Offs ◽  
Neuro Fuzzy ◽  
Analysis Of Performance ◽  
Speed Simulation

We propose a semi-automatic HW/SW codesign flow for low-power and low-cost Neuro-Fuzzy embedded systems. Applications range from fast prototyping of embedded systems to high-speed simulation of Simulink models and rapid design of Neuro-Fuzzy devices. The proposed codesign flow works with different technologies and architectures (namely, software, digital and analog). We have used The Mathworks' Simulink© environment for functional specification and for analysis of performance criteria such as timing (latency and throughput), power dissipation, size and cost. The proposed flow can exploit trade-offs between SW and HW as well as between digital and analog implementations, and it can generate, respectively, the C, VHDL and SKILL codes of the selected architectures.

Hidden value in low-cost inorganic pigments as potentially valuable magnetic materials

2016 ◽  
Vol 42 (8) ◽  
pp. 9605-9612 ◽  
Author(s):  
Rui M. Novais ◽  
M.P. Seabra ◽  
João S. Amaral ◽  
Robert C. Pullar
Keyword(s):  
Magnetic Materials ◽  
Low Cost ◽  
Inorganic Pigments

Graded-lattice AAO photonic crystal heterostructure for high Q refractive index sensing

RSC Advances ◽  
2015 ◽  
Vol 5 (88) ◽  
pp. 71770-71777 ◽  
Author(s):  
Jungmin Lee ◽  
Kyuyoung Bae ◽  
Gumin Kang ◽  
Minjung Choi ◽  
Seunghwa Baek ◽  
...  
Keyword(s):  
Refractive Index ◽  
Photonic Crystal ◽  
Anodic Aluminum Oxide ◽  
Low Cost ◽  
Refractive Index Sensor ◽  
High Q ◽  
Refractive Index Sensing ◽  
Anodic Aluminum ◽  
Graded Lattice ◽  
Photonic Crystal Heterostructure

We present a low-cost and versatile high Q colorimetric refractive index sensor based on anodic aluminum oxide (AAO) graded-lattice photonic crystal heterostructure (PCH) template controlled by voltage pulse and electrolyte temperature.

scholarly journals Cas12a-based on-site and rapid nucleic acid detection of African swine fever

2019 ◽  
Author(s):  
Jing Bai ◽  
Haosi Lin ◽  
Haojian Li ◽  
Yang Zhou ◽  
Junshan Liu ◽  
...  
Keyword(s):  
African Swine Fever Virus ◽  
Low Cost ◽  
African Swine Fever ◽  
Lateral Flow ◽  
Ease Of Use ◽  
Nucleic Acid Detection ◽  
Lateral Flow Strip ◽  
Trade Offs ◽  
Laboratory Facilities ◽  
Sensitivity Specificity

AbstractThe mortality rate of hemorrhagic African swine fever (ASF), which targets domestic pigs and is caused by African swine fever virus (ASFV), can reach 100%. ASF has been reported in 25 Chinese provinces since August 2018. There is no effective treatment or vaccine for it and the present molecular diagnosis technologies have trade-offs in sensitivity, specificity, cost and speed, and none of them cater perfectly to ASF control. Thus, a technology that overcomes the need for laboratory facilities, is relatively low cost, and rapidly and sensitively detects ASFV would be highly valuable. Here, we describe an RAA-Cas12a-based system that combines recombinase-aided amplification (RAA) and CRISPR/Cas12a for ASFV detection. The fluorescence intensity readout of this system detected ASFV p72 gene levels as low as 10 aM. For on-site ASFV detection, lateral-flow strip readout was introduced for the first time in the RAA-Cas12a based system (named CORDS, Cas12a-based On-site and Rapid Detection System). We used CORDS to detect target DNA highly specifically using the lateral-flow strip readout. CORDS could identify the p72 gene at femtomolar sensitivity in an hour at 37°C, and only requires an incubator. For ease of use, the regents of CORDS was lyophilized to three tubes and remained the same sensitivity when stored at 4 °C for at least 7 days. Thus, CORDS provides a rapid, sensitive and easily operable method for ASFV on-site detection. Lyophilized CORDS can withstand long-term transportation and storage, and is ready for field applications.

scholarly journals Nature-Based Solutions for Wastewater Treatment

2021 ◽  
Keyword(s):  
Wastewater Treatment ◽  
Low Cost ◽  
Scientific Evidence ◽  
Treatment Plant ◽  
Domestic Wastewater ◽  
Local Context ◽  
Design Parameters ◽  
Efficient Treatment ◽  
Case Examples ◽  
Trade Offs

There are 2.4 billion people without improved sanitation and another 2.1 billion with inadequate sanitation (i.e. wastewater drains directly into surface waters), and despite improvements over the past decades, the unsafe management of fecal waste and wastewater continues to present a major risk to public health and the environment (UN, 2016). There is growing interest in low cost sanitation solutions which harness natural systems. However, it can be difficult for wastewater utility managers to understand under what conditions such nature-based solutions (NBS) might be applicable and how best to combine traditional infrastructure, for example an activated sludge treatment plant, with an NBS such as treatment wetlands. There is increasing scientific evidence that treatment systems with designs inspired by nature are highly efficient treatment technologies. The cost-effective design and implementation of ecosystems in wastewater treatment is something that exists and has the potential to be further promoted globally as both a sustainable and practical solution. This book serves as a compilation of technical references, case examples and guidance for applying nature-based solutions for treatment of domestic wastewater, and enables a wide variety of stakeholders to understand the design parameters, removal efficiencies, costs, co-benefits for both people and nature and trade-offs for consideration in their local context. Examples through case studies are from across the globe and provide practical insights into the variety of potentially applicable solutions. ISBN: 9781789062250 (Paperback) ISBN: 9781789062267 (eBook)

Robotic Bases

2013 ◽  
pp. 28-59
Keyword(s):  
Power Consumption ◽  
Mobile Robots ◽  
Low Cost ◽  
Complete Understanding ◽  
Sensors And Actuators ◽  
Detailed Review ◽  
Motion Models ◽  
Trade Offs ◽  
Localization And Mapping ◽  
And Performance

This is the second chapter of the first section. It presents the mechanical and physical foundations of mobile robots that are needed for a complete understanding of the concepts of further chapters, such as sensor and motion models. It provides a detailed review of the most common electro-mechanical components found in state-of-the-art mobile robots, emphasizing practical aspects, such as weight and size, power consumption, and performance trade-offs. Sensors and actuators, in particular, are stated as the hardware basis for coping with localization and mapping, and thus, specialized sections are devoted to them. The described devices range from low-cost sensors/actuators suitable for hobbyists to expensive professional-grade components.

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