White Papers

Ultra Low Thermal Resistant Adhesives for Electronic Applications

As advances in epoxy and silicone materials constantly evolve, manufacturers of advanced electronic systems will find that adhesives offer the ability to meet nearly any combination of requirements for thermal, environmental, and structural stability. As product manufacturers face greater challenges in assembling die, package, and other components into products able to cope with increasing heat loads, adhesives are particularly versatile for bonding, sealing and coating. Moreover, the use of filler materials in adhesives can help to fine tune the specific performance demands required to extend product life cycles and meet manufacturing requirements. Learn more about why and how ultra low thermally conductive adhesives are the preferred fastening approach in applications requiring careful thermal management.

Posted in: White Papers, Electronics & Computers
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Conductive Coatings Protect Circuitry from EM/RF and ESD

With the trend toward smaller and smaller electronic devices, unintentional EMI/RFI interference has become more of an issue. Shielding of these interferences is critical and coatings can be successfully applied as protection on the materials used. In this paper, the different sources of interference are explored, as well as how coatings can play a critical role in protecting these sensitive components and boards.

Posted in: White Papers, Electronics & Computers, RF & Microwave Electronics
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Biomarker Sensor System and Method for Multi-Color Imaging and Processing of Single-Molecule Life Signatures

NASA’s Jet Propulsion Laboratory offers a method to manufacture biomarker sensor arrays with nanoscale resolution and active regions on the order of 1 micron by applying nanolithographic direct-write techniques to the fabrication of Silane chemistry sensors on a transparent substrate. This novel technology enables extremely fine patterns of detectors suitable for multicolor imaging of single-molecule samples at resolutions far below the diffraction limit. The extremely small size of these sensors allows for rapid, highly specific screening for hundreds of functionalities within a single, small, integrated microfluidics chip.

Posted in: Briefs, White Papers, Sensors, Integrated circuits, Sensors and actuators, Integrated circuits, Sensors and actuators, Biological sciences, Fabrication, Biomaterials
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Unique Method for Orifice Production

To produce accurate, repeatable orifices, all the variables that might influence the Cd Value (Coefficient of Discharge) must be controlled during production. This includes the orifice hole length, edges, surface finishes, roundness and the elimination of all tool marks, burrs, ragged edges and irregularities. If any one of these areas is not perfectly managed, the orifice flow rates will vary from piece to piece thereby making it impossible to predict flow with any accuracy.

Posted in: White Papers, White Papers, Mechanical Components, Mechanics
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How New Angular Positioning Sensor Technology Opens A Broad Range of New Applications

A new generation of touchless position sensors solves a number of new problems while simplifying existing on-line control applications by providing design engineers with an opportunity to reduce implementation and maintenance costs. This technology can solve problems from measuring through materials to existing shaft alignment issues.

Posted in: White Papers, White Papers, Sensors
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Performance Characteristics of Digital Frequency Discriminators

Digital frequency discriminators are key components of instantaneous frequency measurement (IFM) receiver systems as well as many other complex electronic warfare (EW) systems. However, to obtain optimum results it is essential to match DFD performance levels to a specific application. DFDs are integral components of IFM receiver systems; they may also be imbedded into a wide range of military systems such as radar warning receivers (RWRs), electronic countermeasures (ECM) systems, and electronic support measures (ESM) platforms, where they help provide instantaneous frequency measurement capability.

Posted in: White Papers, White Papers, Electronics & Computers
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Machine Positioning Uncertainty with Laser Interferometer Feedback

Laser interferometers are used as a measurement reference for machine correction and accuracy validation in the production of many high precision motion systems. Under controlled environmental conditions, laser interferometer measurement can provide low measurement uncertainty relative to the achievable accuracy of most commonly used motion control devices. As such, when processes require the utmost precision, laser interferometer measurement near the machine’s work point is frequently used as the feedback mechanism for machine control. In these instances, the use of laser interferometry to characterize the machine’s motion is unjustified because the measurement uncertainty of the metrology system is equivalent or higher than the motion error. The accuracy of these machines’ motion must be equated to an uncertainty in the feedback system’s measurement of the defined work point’s motion.

Posted in: White Papers, Mechanical Components, Mechanics
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High-Speed Cameras Help Digital Image Correlation Show Its Strength

Digital Image Correlation (DIC) using high-speed cameras is gaining in popularity as a method for measuring material deformation and strain. That popularity is based on some real advantages of DIC over traditional sensors, and supported by advances in camera capabilities, integrator software, and new measurement techniques.

Posted in: White Papers, Coatings & Adhesives, Materials, Physical Sciences, Test & Measurement
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High-Speed Switched Serial Fabrics Improve System Design

Well into its third decade of widespread deployment, VME adopted the new VXS gigabit serial interface, clearly representing the most significant leap in backplane data transfer rates throughout its entire history. Because VXS delivered such a dramatic improvement in embedded system performance, the use of gigabit serial technology was extended to create VPX. The OpenVPX initiative followed shortly thereafter, as risk-averse government agencies mandated the need for industry-wide standards. The hallmark of any successful standard is that it continues to evolve with technology, and none offers a better example than VME’s evolution to VXS and VPX.

Posted in: White Papers, White Papers, Electronics & Computers
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High-Speed Real Time Recording Systems

In today’s world of high-speed A/D converters operating in the gigahertz range, real-time signal recording has become a challenging task that requires specialized hardware and intelligent application software. When designing a real-time recorder capable of streaming sustained data to disk at rates of up to 5 GB/sec and higher, the system developer has to consider the limitations presented by the recorder’s operating and file systems, the limitations of disk drive technology, the hardware interfaces, and the RAID controller technology.

Posted in: White Papers, White Papers, Electronics & Computers
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