Silver Nanoparticle Synthesis Using an Inkjet Mixing System

Abstract

Individual nanoscale silver particles were produced using an inkjet mixing system. First, the behaviors of colliding droplets were investigated to prepare to conduct the synthesis without splitting merged droplets. When small droplets collided, they merged to form droplets that stayed in a state of coalescence at a higher discharging velocity. In addition, by changing the orientation at the collision point, the droplet velocity could be increased. Then, silver nanoparticle synthesis was conducted under conditions that avoided droplet splitting. Smaller particles were produced by higher-velocity collisions for all the examined droplet sizes. When droplets were 50–100 μm, an average particle diameter of 2.5 nm was produced. In addition, when droplets of different sizes collided, they formed a continuous supply of precursor, which subsequently resulted in production of particles with uniform size.

Flash precipitation of random copolymers in a micro-mixer for controlling the size and surface charge of nanoparticles

“…It obviously indicates that the faster mixing in the FNP facilitates rapid nucleation and homogeneous precipitation. 26 Moreover, the P-NPs prepared from P(St-MA) at a concentration of 7 mg mL −1 in a turbulent jet flow mode showed an average size of 141 nm, respectively, whereas the P-NPs obtained from P(MMA-MAA) under the same conditions were measured at 197 nm.…”

Complex Polymer Nanoparticle Synthesis and Morphology Control Using an Inkjet Mixing System

“…Our previous study confirmed that by increasing B , the once merged droplets were prevented from splitting apart over a wider range of u . This, therefore, resulted in a wider range of We and increased the mixing performance in the merged droplets normalW normale = ρ d 1 u 2 σ B = b d 2 …”

“…This, therefore, resulted in a wider range of We and increased the mixing performance in the merged droplets. 24 = d u We (1)…”

“…Our group has previously reported silver nanoparticle synthesis using an inkjet mixing system (IMS). , This recently developed inkjet technology is a highly reproducible method that continuously discharges droplets (less than a picoliter) with precisely controlled amounts, orientations, velocities, and frequencies. The technology has many applications beyond conventional paper printing, such as 3D printing, electronics, and biomedicine .…”

Design Strategy for Performance Enhancement of Vertical Plate Microdistillators

“…In particular, there are many reports on device development, including reactors, mixers, and pumps [1][2][3][4]. There are also a wide variety of reports on reaction operations [5,6], especially mixing, that take advantage of the tiny mixing space in micro-devices and the resulting short diffusion distance [7]. However, most of these reports focus on separation and specifically on extraction [8][9][10].…”