Antibacterial Efficacy Comparison of Electrolytic and Reductive Silver Nanoparticles Against .

The aim of this study was to develop an electrolysis system to produce silver nanoparticles free from toxic gases, as the most common reduction and electrolysis techniques produce nitrogen dioxide (NO) as a byproduct, which is harmful to human health. The new electrolysis system used two identical silver plate electrodes, replacing silver and carbon rods, and used water as the electrolyte instead of silver nitrate (AgNO) solution since AgNO is the source of NO. The electrolytic silver nanoparticles (ESNs) produced by the new system were characterized and compared with reductive silver nanoparticles (RSNs).

Antibacterial activity of Bajakah Kalalawit phenolic against Staphylococcus aureus and possible use of phenolic nanoparticles.

Dayak tribes indigenous to the Indonesian island of Borneo has been using Bajakah Kalalawit (Uncaria gambir Roxb.) as traditional medicine for ages. This inspired us to develop phenolic from Bajakah Kalalawit extract as antibacterial agent.

Light scattering with single-mode fiber collimators.

The recent development and availability of fiber-optic components including graded-index (GRIN) microlenses and the unique optical properties of single-mode optical fibers make it possible to build ideal detector systems for light-scattering measurements. We show that the simple coupling of a 0.25-pitch GRIN lens and a single-mode optical fiber to form a collimator makes a nonimaging detector system with properties that are superior to conventional setups based on pinholes and that approaches the theoretical limit of a perfectly coherent detector.