Optimizing a polydimethylsiloxone(PDMS) into flexographic printing process for RFID biomedical devices and cell cultures

Perforated PVP encapsulated AgNWs for high mass loading in silver nanowire inks for printed RFID integrated wearable smart bands

“…Furthermore, test inks were prepared such that the concentration of PVP@AgNWs was 12,18,22,27,31,36, and 41 wt% of the total solid content. The compositions were prepared from PVP@AgNWs from each wash cycle.…”

“…Radio Frequency Identification (RFID) tags are the most popular among them, often used for asset tracking and monitoring. 17,18 Ultra-high frequency (860–960 MHz or UHF) based tags are ideal for integration with wearable systems, such as wristbands, and could function as human asset trackers in outdoor and indoor environments where the conventional global positioning system (GPS) fails. 19 UHF RFID-assisted outdoor localization has recently gained considerable attention in human position determination, especially in rescue operations in natural calamities and asset management.…”

Smart Manufacturing Technologies for Printed Electronics

“…A wide variety of ink including but not limited to solvent-based, wafer-based, UV-curable inks and two parts chemically curing inks, etc. can be processed to pattern high-resolution structures on target surfaces [18,61,62]. The Anilox cylinder picks up the ink from the reservoir, and upon contacting the inked areas with the plate cylinder, it transfers the ink and prints on the running substrate between plate and impression cylinders as shown in Figure 9.…”

“…A proper balance between the solution properties such as nanoparticles mixing ratios plus the carrier fluids is essentially required for filling the Anilox engraved cells. Relatively higher-solution concentrations are required within the specific range of viscosities to achieve good resolution patterns [18,61,62]. Typical resolution obtained with flexographic printing is in the range of 50-100 μm; however, further higher resolutions down to ~20 μm could be made possible by proper tuning the solution properties and process the parameters [18,61,62].…”

“…Maintenance plus observation of the engraved cells is very important, as the blockade or erosion of any of the cells could lead to discontinuous printed patterns. An acceptable margin in terms of resolution needs to be allowed, as the pattern dimensions could vary as a result of pressure from impression cylinder on the flexible or polymer plate [18,27,[61][62][63]. An optimum range of width and thickness is needed for the printed patterns to decrease the ohmic losses and also increase the efficiency of the printed devices [47].…”