Angstron Materials Inc. has invented a graphene-based supercapacitor with ultra high energy density. Along with the capacitors, Angstron offers a variety of graphene materials for use in electromagnetic interference, electrostatic discharge, lightning strike and other functional and structural composite applications. Angstron's graphene-based supercapacitor has demonstrated an … [Read more...]
Things to Consider When Specifying Conductive Plastics
In an article discussing conductive plastics, Plastics Today says that stainless steel fibers (SSF) provide good electromagnetic shielding properties, making compounds with this type of filler suitable to protect electric devices from electromagnetic interference. Learn more from Plastics Today. … [Read more...]
Micaclad Conductive Silver Glass Spheres
Micaclad Conductive Silver Glass Spheres (CSGS) is a highly conductive silver sphete with a dry bulk resistivity of .001 ohms/cm. The CSGS line not only improves compatibility with conductive film and circuit board applications but physically improves impact strength. It provides excellent conductivity and electromagnetic interference shielding protection, reducing or … [Read more...]
New Life for Magnetic Tape
A boost in storage density could keep magnetic tapes spinning for years, thanks to new research from IBM and Fujifilm. Increasing the density of data that can be stored on a tape makes it more difficult to reliably read information, which is already a problem because of electromagnetic interference and because the heads themselves will retain a certain amount of residual … [Read more...]
Simple Lab Techniques of Comparing EMI/RFI Absorber Materials
Surface current numbers can be used to pinpoint a material with the best absorption characteristics in a given frequency range. David R. Pacholok, Creative Electronics Consultants, Sleepy Hollow, IL, USA. With engineers facing ever increasing radiated EMI regulatory compliance concerns, various types of EMI absorber materials have come on the market. These are usually … [Read more...]
Shielding of an EMG Machine Utilizing a Conductive Tent
Testers seek to remedy the longstanding problem of “noisy’ responses from an EMG instrument. Terence P. O’Laughlin and Michael J. Oliver, MAJR Products, Saegertown, Pennsylvania, USA INTRODUCTION This paper presents a shielding methodology and test in which an electromyography (EMG) instrument is shielded from spurious electromagnetic and radio frequency interference … [Read more...]
Low Frequency Magentic Shielding: An Integrated Solution
Innovative direct coating technique as an alternative to conventional foils Rich Emrich and Andrew Wang, Integran Technologies Inc.; Toronto, Canada INTRODUCTION Many electrically sensitive devices, such as transducers, sensors, detectors, and test instrumentation require protection from electromagnetic interference (EMI). Higher frequency interference is normally shielded … [Read more...]
Researchers Find That Sticky Tape Emits Powerful X-Rays
New Scientist reports that by using a motor to unwind a roll of sticky tape, researcher Seth Putterman and colleagues from the University of California, Los Angeles recorded the electromagnetic emissions produced by ripping the tape from its roll at 3 centimeters per second. This action generated X-ray bursts of 15 kiloelectronvolts – each lasting one-billionth of a second, and … [Read more...]
Conductive Materials Available in a Wide Variety of Formulations
E-Fill™ from Sulzer Metco is an aluminum compatible nickel graphite conductive filler that offers advanced corrosion resistance and stability in harsh environments. It is especially well suited to applications involving coated flanges. The angular shape of E-Fill™ coupled with a proprietary hard nickel coating gives gaskets the necessary “bite” needed to ensure optimal … [Read more...]
Sheet Solutions Are Designed With High Permeability and High Temperature Resistance
The WX Series from ARC Technologies provides superior EMI absorption by combining proprietary, high-performance magnetic materials into a flexible, resilient elastomer. Precisely blending refined fillers in exacting ratios with polymer substrate materials creates a thin, flexible EMI-absorbing sheet that will attenuate from 100 MHz to 3 GHz. Surface resistance is >3 MΩ. WS … [Read more...]
