Silver paste

The first observations of electroluminescence from organic materials were made in the 1950s [1]. Interest in this phenomenon was fueled by the work of Pope et al. [2], who observed electroluminescence from single crystals of anthracene. A voltage was applied between silver paste electrodes that were placed on the opposite sides of an anthracene... 

Figure 3.25 — Electrolytic flow-cell of the tubular type. (A) Whole cell. (B) Detail of working micro-electrode 1 Working electrode 2 reference electrode (Ag/AgCl) 3 counter-electrode (Pt wire) 4 acrylic tube 5 rubber cup 6 electrolyte solution (mobile phase) 7 fused-silica tube (50- or 100-/tm ID) 8 Ni wire (diameter 25 or 50 im, length 5 mm) 9 PTFE tube (0.1-mm ID, 2-mm OD) 10 hole 11 adhesive resin 12 glass pipette 13 silver paste 14 insulator 15 electric wire, (Reproduced from [184] with permission of Elsevier Science Publishers).

Figure 2 Schematic diagram of applied contact pads with gold film, silver paste and gold wire. (Ref. Sugimoto, I., Tajima, Y., Hikita, M., Low Resistance Ohmic Contact for Oxide Superconductor Eu-Ba-Cu-O, Jpn. J. Appl. Phys. 27 L864 (1988).

NADH can be readily monitored electrochemically, and can be used as a simple and effective method to monitor metal ion concentrations. Such an approach has been recently utilised by Rodriguez et al. [149] for an SPCE-based biosensor for the amperometric detection of Hg2+, Cu2+, Cd2+, Zn+ and Pb2+. Devices used in this study were printed onto 250 pm thick polyester sheet. The working electrode (planar area 0.16 cm2) was fabricated from a commercially available carbon powder containing 5% rhodium plus promoters, which was made into a screen-printable paste by mixing 1 4 in 2.5% (w/v) hydroxyethyl cellulose in water. The reference electrode ink contained 15% silver chloride in silver paste. The counter electrode and basal tracks were fabricated... 

Synthesis of single crystals of TBPDA (Cgo)2 was described elsewhere [4], Photoconductivity was excited by white light of a 150 W halogen tube. Photoconductivity was characterized by current T running through indium contacts attached to one of the faces of the samples with silver paste. The contacts were under direct voltage of 10-50 V. Current values were measured with a charge amplifier connected with PC. The cell filled with the sample was put in a resonator of a standard Radiopan SE/X 2547 spectrometer. 

The electric current flowing through indium contacts served as a measure of conductivity. The contacts were fixed on one of the sample surface by silver paste. The voltage U applied to the contacts was equal to 50-70 V. Samples were exposed to P-irradiation with the use of a radioactive source 90Sr +90Y. The mean energy of electrons was equal to 0.536 MeV. All measurements were carried out at room temperature. 

Acetylcholineesterase and choline oxidase Prepared by mounting a carbon fiber (200 pm diam) in a glass capillary with silver paste and epoxy resin, electrochemically pretreating the electrode from 0 to 1.2 V for 15 min, and dipping the electrode in 11% PVA-Styryl pyridinium solution containing AChE and ChO. The calibration graph was rectilinear from 0.2 to 1 mM of ACh. The response time was 0.8 min. [76]... 

Apiezon Wax Sample base plate Silver paste Sample substrate... 

Ataka and Tanaka (1980) measured the d.c. conductivity of lysozyme single crystals at different temperatures. They attributed their results to protons originating from residual water molecules. The contact between electrode and crystal was made with silver paste, a possible flaw in the experimental method. 

Figure 69. A. Upper pyrophylliie lid filled with two alumina insulating sleeves the latter sleeves are each cemenled to the lid with an inorganic adhesive agent, and the thermocouples 1 and 2 arc each inserted into the sleeves and are each supported and insulated by the sleeves B. Aluminium cylinder this is connected with the thermocouple 3 attached on the outside surface of the cylinder with silver paste for the cell-heating control and is covered with the lower pyrophyllite lid at the base.

The third example of field emission from Si-based nanowires is from the aligned SiC nanowires. The field emission measurements [68] were carried out in a vacuum chamber at a pressure of 5 x 10 Torr at room temperature. An oriented SiC nanowire array, which was used as the cathode, was stuck to a stainless steel substrate by silver paste with the bottom end of the nanowires facing upward. A copper plate with a diameter of 1 cm, mounted on a precision linear feedthrough, was used as the anode. Field emission current densities of 10 pA cm were observed at applied fields of 0.7-1.5 V pm and current densities of 10 mA cm were realized at applied fields as low as 2.5-3.5 V pm , as shown in Figure 10.35. These results represent one of the lowest fields ever reported for any field-emitting materials at technologically useful current densities. We attributed this emission... 

Electrical Resistivity. The electrical resistivity of these materials was measured from room temperature to 15 K at 5 K intervals on bars, 6-10 mm long and 1 mm square, using a DC four-probe method. The electrical contacts were made with fine platinum wire and silver paste. A constant current of <10 mA was used. The voltage difference was measured to 0.1 fiV. The temperature of the specimen was maintained by a closed-cycle cryogenic system and measured using a calibrated silicon diode. 

The discs or wafers are contacted by a silver paste on two opposite surfaces and are fitted with leads. While discs are produced to the final size, wafers are cut to a final chip size depending on the resistance of the wafer. Usually a coating and special aging process follows to ensure long-term stability. The innovative waver technology was the breakthrough to cost-effective mass production of accurate NTCs with defined properties. 

DC electrical resistivity measurements were carried out using LCR Macroni bridge with two probe conductivity arrangement. The end faces of each pellet were coated with a thin layer of conducting silver paste which was activated in an oven for 5h. Resistivity was measured from room temperature to 773 K. An electric field of 20 V cm" was applied across the pellet for these measurements. 

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