Fabrication and Performance Analysis of PMMA Substrate Diffuser/Nozzle Micro-Pump by CNC Milling Machine

2009 ◽  
Vol 60-61 ◽  
pp. 198-201
Author(s):  
Li Tian ◽  
Wei Wang ◽  
Xiao Wei Liu ◽  
Ying Zhang ◽  
Shu Yi Ji
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Maximum Flow ◽  
Microfluidic System ◽  
Milling Process ◽  
Cnc Milling ◽  
Micro Pump ◽  
Orifice Flow ◽  
And Performance ◽  
Nozzle Structure

A new low cost high performance PMMA micropump, developed for microfluidic system, is presented. According to the orifice flow theory, a diffuser/nozzle structure is fabricated with precision milling process, and packaged with the film-sealing at the condition of thermal bonding process. The size parameter of the diffuser/nozzle structure is 2.5mm *150µm, 8° conical angle, the volume of PMMA micropump is 14×14×2.5 mm3. And experimental results show that the PMMA micropump can produce a maximum back pressure of 1906.1Pa and a maximum flow rate of 564µL/min under 220 V, 500Hz squired wave power supply.

RF-MEMS Components and Networks for High-Performance Reconfigurable Telecommunication and Wireless Systems

2012 ◽  
Vol 81 ◽  
pp. 65-74 ◽  
Author(s):  
Jacopo Iannacci ◽  
Giuseppe Resta ◽  
Paola Farinelli ◽  
Roberto Sorrentino
Keyword(s):  
High Performance ◽  
Microelectromechanical Systems ◽  
Rf Mems ◽  
Low Cost ◽  
Impedance Matching ◽  
Phase Shifters ◽  
Rf Systems ◽  
Mems Technology ◽  
And Performance ◽  
Rf Performance

MEMS (MicroElectroMechanical-Systems) technology applied to the field of Radio Frequency systems (i.e. RF-MEMS) has emerged in the last 10-15 years as a valuable and viable solution to manufacture low-cost and very high-performance passive components, like variable capacitors, inductors and micro-relays, as well as complex networks, like tunable filters, reconfigurable impedance matching networks and phase shifters, and so on. The availability of such components and their integration within RF systems (e.g. radio transceivers, radars, satellites, etc.) enables boosting the characteristics and performance of telecommunication systems, addressing for instance a significant increase of their reconfigurability. The benefits resulting from the employment of RF-MEMS technology are paramount, being some of them the reduction of hardware redundancy and power consumption, along with the operability of the same RF system according to multiple standards. After framing more in detail the whole context of RF MEMS technology, this paper will provide a brief introduction on a typical RF-MEMS technology platform. Subsequently, some relevant examples of lumped RF MEMS passive elements and complex reconfigurable networks will be reported along with their measured RF performance and characteristics.

Advanced SiP Packaging Technologies of IPD for Mobile Applications

2010 ◽  
Vol 2010 (DPC) ◽  
pp. 1-20
Author(s):  
Geun Sik Kim ◽  
Kai Liu ◽  
Flynn Carson ◽  
Seung Wook Yoon ◽  
Meenakshi Padmanathan
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Autonomous Systems ◽  
System Level ◽  
Design And Technology ◽  
Wafer Level ◽  
Future Technology ◽  
Rf Transceivers ◽  
And Performance ◽  
3D Stacking

IPD technology was originally developed as a way to replace bulky discrete passive components, but it¡¯s now gaining popularity in ESD/EMI protection applications, as well as in RF, high-brightness LED silicon sub-mounts, and digital and mixed-signal devices. Already well known as a key enabler of system-in-packages (SiPs), IPDs enable the assembly of increasingly complete and autonomous systems with the integration of diverse electronic functions such as sensors, RF transceivers, MEMS, power amplifiers, power management units, and digital processors. The application area for IPD will continue to evolve, especially as new packaging technology, such as flipchip, 3D stacking, wafer level packaging become available to provide vertical interconnections within the IPD. New applications like silicon interposers will become increasingly significant to the market. Currently the IPD market is being driven primarily by RF or wireless packages and applications including, but not limited to, cell phones, WiFi, GPS, WiMAX, and WiBro. In particular, applications and products in the emerging RF CMOS market that require a low cost, smaller size, and high performance are driving demand. In order to get right products in size and performance, packaging design and technology should be considered in device integration and implemented together in IPD designs. In addition, a comprehensive understanding of electrical and mechanical properties in component and system level design is important. This paper will highlight some of the recent advancements in SiP technology for IPD and integration as well as what is developed to address future technology requirements in IPD SiP solutions. The advantage and applications of SiP solution for IPD will be presented with several examples of IPD products. The design, assembly and packaging challenges and performance characteristics will be also discussed.

scholarly journals Properties of Foamed Lightweight High-Performance Phosphogypsum-Based Ternary System Binder

2020 ◽  
Vol 10 (18) ◽  
pp. 6222 ◽  
Author(s):  
Girts Bumanis ◽  
Jelizaveta Zorica ◽  
Diana Bajare
Keyword(s):  
Ternary System ◽  
High Performance ◽  
Raw Materials ◽  
Low Cost ◽  
Construction Materials ◽  
Mineralogical Composition ◽  
Point Of View ◽  
Raw Material ◽  
Total Energy Consumption ◽  
And Performance

The potential of phosphogypsum (PG) as secondary raw material in construction industry is high if compared to other raw materials from the point of view of availability, total energy consumption, and CO2 emissions created during material processing. This work investigates a green hydraulic ternary system binder based on waste phosphogypsum (PG) for the development of sustainable high-performance construction materials. Moreover, a simple, reproducible, and low-cost manufacture is followed by reaching PG utilization up to 50 wt.% of the binder. Commercial gypsum plaster was used for comparison. High-performance binder was obtained and on a basis of it foamed lightweight material was developed. Low water-binder ratio mixture compositions were prepared. Binder paste, mortar, and foamed binder were used for sample preparation. Chemical, mineralogical composition and performance of the binder were evaluated. Results indicate that the used waste may be successfully employed to produce high-performance binder pastes and even mortars with a compression strength up to 90 MPa. With the use of foaming agent, lightweight (370–700 kg/m3) foam concrete was produced with a thermal conductivity from 0.086 to 0.153 W/mK. Water tightness (softening coefficient) of such foamed material was 0.5–0.64. Proposed approach represents a viable solution to reduce the environmental footprint associated with waste disposal.

Recent Advances in Pyroelectric Ceramics and Thin Films for Applications in Uncooled Infra-Red Sensor Arrays

2006 ◽  
Vol 45 ◽  
pp. 2503-2513 ◽  
Author(s):  
Roger W. Whatmore
Keyword(s):  
Thin Films ◽  
High Performance ◽  
Spatial Information ◽  
Low Cost ◽  
Sensor Arrays ◽  
Production Costs ◽  
Healthcare Applications ◽  
Infra Red ◽  
And Performance ◽  
Materials Used

Pyroelectric infra-red detector arrays provide an attractive solution to the problem of collecting spatial information on the IR distribution in a scene. They have the property that they are only sensitive to changes in the IR flux. This means that they are particularly-well suited to the monitoring of movements of people in applications such as retail outlets and in safety and healthcare applications. The applications of low cost arrays with limited (few hundred elements) for people sensing and imaging radiometry will be illustrated. The performances and costs of uncooled pyroelectric arrays are ultimately driven by the materials used. For this reason, continuous improvements in materials technology are important. In the area of bulk ceramics, it is possible to obtain significant improvements in both production costs and performance though the use of tape-cast, functionally-gradient materials. The use of directly-deposited ferroelectric thin films on silicon ASIC’s is offering considerable potential for low cost high performance pyroelectric arrays. The challenges involved in developing such materials will be discussed.

scholarly journals A 79 dBΩ 1.2 GHz Low-Noise Single-Ended CMOS Transimpedance Amplifier for High-Performance OTDR Applications

2019 ◽  
Vol 15 (2) ◽  
pp. 113-118
Author(s):  
Agata Romanova ◽  
Vaidotas Barzdenas
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Low Noise ◽  
Cmos Process ◽  
Transimpedance Amplifier ◽  
Output Buffer ◽  
Noise Current ◽  
Resistive Feedback ◽  
Optical Time ◽  
And Performance

AbstractThe work reports on the design and performance of a low-noise low-cost CMOS transimpedance amplifier (TIA). The proposed circuit shall be employed in optical time-domain reflectometers and is implemented using an affordable 0.18 µm 1.8 V CMOS process. The approach preserves the benefits of a classical feedback structure while addressing the noise problem of conventional feed-forward and resistive feedback architectures via the usage of noise-efficient capacitive feedback. Circuit-level modifications are proposed to mitigate the voltage headroom and DC current issues. The suggested design achieves a total gain of 82 dBΩ (79 dBΩ after the output buffer) within the bandwidth of 1.2 GHz while operating with a total input capacitance of 0.7 pF. The simulated average input-referred noise current density is below 1.8 pA/sqrt(Hz) with the power consumption of the complete amplifier including the output buffer being 21 mW.

scholarly journals Thermal Investigation of Aluminium – 11.8% Silicon (LM6) Reinforced SiO2-Particles

2011 ◽  
Vol 264-265 ◽  
pp. 620-625 ◽  
Author(s):  
Mohd Sayuti ◽  
S. Suraya ◽  
Shamsuddin Sulaiman ◽  
T.R. Vijayaram ◽  
Mohd Khairol A. Arifin ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Metal Matrix ◽  
High Performance ◽  
Low Cost ◽  
Hardness Test ◽  
Weight Fraction ◽  
Matrix Composites ◽  
Casting Technique ◽  
And Performance ◽  
Commercial Applications

High performance automotive, aerospace, electronics and other industrial and commercial applications are finding tremendous advantages in using metal matrix composites. The reinforcement is very important because it determines the mechanical properties, cost and performance of a given composite. An excellent in mechanical properties, combined with the ease of formability and low cost makes the application of metal matrix composite of aluminium-11.8% silicon reinforced SiO2 to increase steadily. This paper investigates the interrelationships between thermal properties and reinforcement content, microstructure and hardness of LM6 reinforced SiO2 composites. Specimens were fabricated by casting technique for 5, 10, 15 and 20% weight fractions of SiO2 particulate and mesh of: 65 micron. The experimental results show that the thermal diffusivity and thermal conductivity decreases as SiO2 wt.% of the composite increases and under hardness test, it was found that the hardness value had increased gradually with the increased addition of quartz particulate by weight fraction percentage.

Engine Cycle Selection and Propulsion System Integration for Future High Performance Fighter Aircraft

1977 ◽  
Author(s):  
G. W. Lind ◽  
J. Protopapas
Keyword(s):  
System Integration ◽  
High Performance ◽  
Low Cost ◽  
Propulsion System ◽  
Fighter Aircraft ◽  
Performance Constraints ◽  
Design Variables ◽  
And Performance ◽  
Time Required ◽  
Engine Cycle

The selection and optimization of propulsion systems can be a costly and time-consuming process, especially when there are diverse performance requirements placed on the overall weapon system. Computerized procedures have been developed within the Grumman Propulsion Department to mechanize this capability and yet maintain the man-m-the-loop for full visibility during the evaluation of a candidate design concept. The system permits low cost, rapid, multidiscipline. interactive engine cycle selection and propulsion system integration to be effectively performed early in the preliminary design process of a high performance fighter aircraft. For example, the computer running time required to select a point design within a matrix of design variables and performance constraints has been reduced by 85 percent over previous techniques. This paper describes these propulsion evaluation procedures and cites a specific example of their application to the analysis of an advanced interceptor requirement.

scholarly journals DEVELOPMENT OF THE BRICAN TD100 SMALL UAS AND PAYLOAD TRIALS

2015 ◽  
Vol XL-1/W4 ◽  
pp. 143-149 ◽  
Author(s):  
B. Eggleston ◽  
B. McLuckie ◽  
W. R. Koski ◽  
D. Bird ◽  
C. Patterson ◽  
...  
Keyword(s):  
Forest Fire ◽  
High Performance ◽  
Low Cost ◽  
Fire Research ◽  
The Arctic ◽  
Ir Camera ◽  
Bowhead Whales ◽  
Engine Version ◽  
And Performance ◽  
Made In

The Brican TD100 is a high performance, small UAS designed and made in Brampton Ontario Canada. The concept was defined in late 2009 and it is designed for a maximum weight of 25 kg which is now the accepted cut-off defining small civil UASs. A very clean tractor propeller layout is used with a lightweight composite structure and a high aspect ratio wing to obtain good range and endurance. The design features and performance of the initial electrically powered version are discussed and progress with developing a multifuel engine version is described. The system includes features enabling operation beyond line of sight (BLOS) and the proving missions are described. The vehicle has been used for aerial photography and low cost mapping using a professional grade Nikon DSLR camera. For forest fire research a FLIR A65 IR camera was used, while for georeferenced mapping a new Applanix AP20 system was calibrated with the Nikon camera. The sorties to be described include forest fire research, wildlife photography of bowhead whales in the Arctic and surveys of endangered caribou in a remote area of Labrador, with all these applications including the DSLR camera.

Design of Advanced High Performance Bus Tracer in System on Chip Using Matrix Based Compression for Low Power Applications

2020 ◽  
Vol 17 (4) ◽  
pp. 1852-1856
Author(s):  
P. Bhuvaneshwari ◽  
T. R. Jaya Chandra Lekha
Keyword(s):  
Low Power ◽  
High Performance ◽  
Performance Monitoring ◽  
Low Cost ◽  
System On Chip ◽  
Consumer Electronics ◽  
Compression Scheme ◽  
Control Signals ◽  
And Performance ◽  
On Chip

This project proposes multilayer advanced high-performance bus architecture for low power applications. The proposed AHB architecture consists of the bus arbiter and the bus tracer (A.R.M.A., 1999. Specification (Rev 2.0) ARM IHI0011A). The bus arbiter, which is self motivated selects the input packet based on the control signals of the incoming packet. So that arbitration leads to a maximum performance. The On-Chip bus is an important system-on-chip infrastructure that connects major hardware components. Monitoring the on-chip bus signals is crucial to the SoC debugging and performance analysis/optimization (Gu, R.T., et al., 2007. A Low Cost Tile-Based 3D Graphics Full Pipeline with Real-Time Performance Monitoring Support for OpenGL ES in Consumer Electronics. 2007 IEEE International Symposium on Consumer Electronics, June; IEEE. pp.1–6). But, such signals are difficult to observe since they are deeply embedded in a SoC and there are often no sufficient I/O pins to access these signals. Therefore, a straightforward approach is to embed a bus tracer in SoC to capture the bus signal trace and store the trace in on-chip storage such as the trace memory which could then be off loaded to outside world for analysis. The bus tracer is capable of capturing the bus trace with different resolutions, all with efficient built in compression mechanisms such as dictionary based compression scheme for address and control signals and differential compression scheme for data. To improve the compression ratio matrix based compression which is lossless compression is used instead of differential compression. This system is designed using Verilog HDL, simulated using Modelsim and synthesized using Xilinx software.

Shooting Down the Server Front-End Bottleneck

2020 ◽  
Vol 38 (3-4) ◽  
pp. 1-30
Author(s):  
Rakesh Kumar ◽  
Boris Grot
Keyword(s):  
High Performance ◽  
State Of The Art ◽  
Low Cost ◽  
Branch Prediction ◽  
Control Flow ◽  
Trade Off ◽  
Front End ◽  
Working Set ◽  
And Performance ◽  
Fundamental Limitation

The front-end bottleneck is a well-established problem in server workloads owing to their deep software stacks and large instruction footprints. Despite years of research into effective L1-I and BTB prefetching, state-of-the-art techniques force a trade-off between metadata storage cost and performance. Temporal Stream prefetchers deliver high performance but require a prohibitive amount of metadata to accommodate the temporal history. Meanwhile, BTB-directed prefetchers incur low cost by using the existing in-core branch prediction structures but fall short on performance due to BTB’s inability to capture the massive control flow working set of server applications. This work overcomes the fundamental limitation of BTB-directed prefetchers, which is capturing a large control flow working set within an affordable BTB storage budget. We re-envision the BTB organization to maximize its control flow coverage by observing that an application’s instruction footprint can be mapped as a combination of its unconditional branch working set and, for each unconditional branch, a spatial encoding of the cache blocks around the branch target. Effectively capturing a map of the application’s instruction footprint in the BTB enables highly effective BTB-directed prefetching that outperforms the state-of-the-art prefetchers by up to 10% for equivalent storage budget.

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