Integrated circuit elastomers

BS7917 Elastomer insulated fire resistant (limited circuit integrity) cables for fixed wiring in ships and on mobile and fixed off-shore units. Requirements and test methods. 

ALLOYS, PURE silicon) and in epitaxial siUcon deposition (see Electronic materials Integrated circuits Semiconductors) as selective reducing agents as monomers and as elastomer intermediates (see Elastomers, SYNTHETIC). Not least is the use of these materials as intermediates for production of other silanes and sihcones. 

C. P. Wong, Improved Eoom-Temperature Wulconicyed Silicone Elastomers as Integrated Circuit Encapsulants, Polymer Materials for Electronics Applications, American Chemical Society Symposium Series, Washington, D.C., Nos. 184, 171, 1982. 

Improved Room-Temperature Vulcanized (RTV) Silicone Elastomers as Integrated Circuit (IC) Encapsulants... 

In this paper, the thermal stability of the silicone elastomers, base silicone resins, fillers, and their interactions with each other within the silicone matrix are described. Thermal decomposition volatiles, obtained indirectly through solvent extractables, reaction kinetics of the materials as integrated circuit (IC) devices encapsulants will be discussed. 

Based on the high elasticity of PDMS, the elementary microfluidic unit operation is a valve which is typically made of a planar glass substrate and two layers of PDMS on top of each other. One of the two elastomer layer contains the fluidic ducts while the other elastomer layer features pneumatic control channels. To realize a microfluidic valve, a pneumatic control channel crosses a fluidic duct as depicted in Fig. 9a. A pressure p applied to the control chaimel squeezes tlie elastomer into the lower layer, where it blocks the liquid flow. Because of the small size of this valve in the order of 100 x 100 pm, a single integrated fluidic circuit can accommodate thousands of valves. Comparable to developments in microelectronics, this approach is called microfluidic large scale integration (LSI) [122]. 

Consequently, the fabrication of a DE actuator (DEA) that can produce linear motion, called a multi-stacked actuator is presented in this chapter [Chuc et al. (2011)]. It is made of the aforementioned synthetic elastomer, which is a kind of DE as introduced in Chapter 6. The proposed actuator does not need any pre-strain to amplify the displacement and force. It just includes multiple, synthetic elastomer layers, where the electrode layers are connected in parallel. To improve the performance of the proposed actuator, the shape of the actuator is optimized to yield large deformations. Moreover, a high-voltage switching circuit is developed to drive the proposed actuator. In this circuit, the pulse-width-modulated proportional-integral-derivative (PWM-PID) feedback controller is incorporated. The performance of this controller is compared with that of a continuous PID controller via experiments. 

RTV silicone elastomer, an organosiloxane, is one of the most effective encapsulants used for temperature cycling and moisture protection of IC devices. Since World War II, silicones (organosiloxane polymers) have been used in a variety of applications where properties of high thermal stability, hydrophobicity, and low dielectric constant are necessary, e.g., as encapsulants or conformal coatings for integrated circuits. In 1969 it was demonstrated that room temperature vulcanized (RTV) silicones exhibited excellent performance as moisture protection barriers for IC devices and a number of different RTV silicone have been adapted For use in the elec-tronics industry... 

Keywords Antennas, elastomers, galinstan, integrated circuits (ICs), liquid alloy, microfluidics, planar inverted cone antenna (PICA), polydimethylsiloxane (PDMS), radiofrequency (RF), sensors, silicones, stretchable electronics, ultrawideband (UWB), voltage-controlled oscillators (VCOs)... 

For electrical insulation applications silicone elastomers retain their excellent dielectric properties over a wide range of operating temperatures. Even when exposed to flame conditions, the elastomer will burn or degrade to a non-conducting silica ash which will often maintain the electrical integrity of a circuit. The extreme resistance of silicones to ozone is of particular benefit in areas where corona discharge occurs. 

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