Synthesis of silver nano particles and fabrication of aqueous Ag inks for inkjet printing

Abstract

The main problem in preparing stable and printable inks containing nanoparticles for inkjet printing is to overcome the strong agglomeration of the particles in dispersion medium. In this study, the silver particles with diameter around 50 nm were produced by a simple wet chemistry method. Stable aqueous printable inks were formulated by using the combination of a triblock copolymer and high intensity focused ultrasound (HIFU). Various factors that affect the ink stability, such as, copolymer content and time of HIFU treatment, were investigated. The ink containing 5 wt% silver has a viscosity of about 2 mPas and surface tension 30 mN/m at 25 • C, which meet inkjet printer requirements. Such inks have been successfully printed on Al 2 O 3 ceramics and low-temperature co-fired ceramics (LTCC) and the printed films show low resistivity.

Silver nanoparticles: synthesis, properties, and therapeutic applications

“…By contrast, physical methods do not involve toxic chemicals and usually have fast processing times. Such methods include physical vapor condensation [11], Arc-discharge [12], energy ball milling method [13], and direct current (DC) magnetron sputtering [14]. Another advantage of physical methods is that the AgNPs formed have a narrow size distribution [14]; however, a major drawback is their high energy consumption.…”

Nanosilver: new ageless and versatile biomedical therapeutic scaffold

“…The most important physical techniques frequently used for the preparation of AgNPs include evaporation/vapor condensation, 22,102,108 arc discharge, 109 energy ball milling, 110 and direct current magnetron sputtering method. 23 Compared to chemical methods, physical methods are generally less time consuming and do not involve any type of hazardous chemicals.…”

“…23 Compared to chemical methods, physical methods are generally less time consuming and do not involve any type of hazardous chemicals. 110 However, high energy consumption and requirement of long time for thermal stability are still the bottlenecks of these methods. 22,111,112 Tsuji et al used the small ceramic heater and laser ablation method, respectively, to synthesize AgNPs.…”

Freeform fabrication of nanobiomaterials using 3D printing

“…A large proportion of the atoms is in the surface of NPs which results in favourable properties such as a reduction in the melting point of metal biomaterials. The size of NPs should normally be 100 times less than the diameter of the jetting nozzle to avoid nozzle clogging (Kosmala et al ., 2011). At the same time, ink containing bio-NPs should be non-viscous, and volatility of solvent should be adequately low to prevent nozzle clogging.…”

“…Nanobioceramic ink containing nanotitanium dioxide (TiO 2 ) has been inkjet printed on glass substrate (Hosseini and SoleimaniGorgani). Gold (Fuller et al ., 2002) and silver (Kosmala et al ., 2011) NPs have been extensively investigated for inkjet printing. Hwan Ko et al .…”