Experiment study of using parallel plate sensor for the detection of conductive material

Abstract

Gold is the yellow precious metal that has been used in many applications likes medicine, electronics, jewelry, investment and others. Thus, gold is one of the commodities which has high demand in the global market. In other to secure the purity of gold and to protect the retailer and consumer from fraud, the detection of gold is very important in the industry. There are many techniques have been used to detect the purity of gold material and those techniques must consider a several factors such as non-destructive, inexpensive, precise, simple and widely accepted by the jewelry industries. Electrical capacitance tomography (ECT) is the most mature non-destructive technique among various tomography. The advantages of ECT are non-radioactive, non-intrusive, high imaging speed and low cost. This paper introduces the ECT using the square sensor. The aim of his paper this to present a new method of verifying the conductive materials using a parallel plate sensor which adopted from the ECT system.

From Droplets to Devices: Recent Advances in Liquid Metal Droplet Enabled Electronics

“…Surface tension [mN m −1 ] Gallium 302.8 [18] 5.91 [18] 6.73 × 10 6 [ 18] −21.6 [18] 40.6 [18] 0.373 [18] 711 19] EGaIn 288.7 [20] 6.28 [20] 3.4 × 10 6 [ 18] 0.002-0.0126 [21] 26.4 [18] 468 [22] 624 [23] Galinstan 283 [24] 6.44 [25] 3.46 × 10 6 [18] -16.5 [26] 0.296 [26] 718 [26] Water 273 [18] 0.997 [18] <1 × 10 −6 [ 17] −12.96 [18] 0.61 [18] 4.18 [18] 71.99 [19] PEDOT:PSS >573.15 [27] 1.011 [27] <1×10 3 [17] -0.17-1 [17] 2360 [17] -Carbon (graphite 4762 [18] 2.2 [18] 2-3 ×10 3 [ 28] −6 [18] 250/80 [29] 0.709 [18] -Gold 1337.2 [18] 19.3 [18] 4.11×10 7 −28 [18] 317 [18] 0.129 [18] 1145 [19] Silver 1234.95 [27] 10.5 [18] 6.3 × 10 7 [30] −19.5…”

Design of a conductive material detection system

“…One indicator in measuring the quality of medicines is to be free from conductive materials such as metals. If the drug contains metal, the health of the users deteriorates and the drug industry experiences a decline in consumers and decreases in company profits [1][2][3][4][5]. The quality of other products that must be considered such as food products such as ready-to-eat products, baby food, and other foods.…”