A New Modeling Approach for Stability of Micro/Nano Bubbles
Microbubbles and nanobubbles have several characteristics that are comparable with millimeter- and centimeter-sized bubbles. These characteristics are their small size, which results in large surface area and high bioactivity, low rising velocity, decreased friction drag, high internal pressure, large gas dissolution capacity, negatively charged surface, and ability to be crushed and form free radicals. Controlling and modeling fundamental properties such as nucleation and of the dynamics of these bubbles is key to successfully exploiting their potential in the growing number of applications such as biomedical diagnosis and therapy, antimicrobial in aquaculture, environment, engineering, stock raising and marine industry. Laser-generated bubble dimensions can be characterized with an optical setup employing a high power continuous wave green laser for bubble generation. In this work, non-resonant, self-excited due to structurally nonlinear properties of the hydrogel, bubble formation was modeled as functions of well-controlled parameters of the colloidal media that is multi-layered and anisotropic, engineered uniquely
Ultra‑stable nano‑micro bubbles in a biocompatible medium for safe delivery of anti‑cancer drugs
We generated long-lasting millimeter bubbles (MBs) around silver nanoparticles (AgNPs) using low-power laser excitation in a biocompatible nanocomposite, achieving lifetimes exceeding seven days—far longer than previously reported. These stable MBs, which showed a correlation between smaller size and longer duration, offer a promising method for targeted cancer drug delivery by encapsulating drugs and transporting them directly to tumor sites.
CERN CLIC Project
Developed microwave pulse compressors and high-frequency solid-state amplifiers in collaboration with the CLIC project group at CERN. With his doctoral student, he made significant contributions to the ATLAS TDAQ (trigger and data acquisition) group at CERN for two years.
CONCEPTUAL DESIGN OF AN X-FEL FACILITY USING CLIC X-BAND ACCELERATING STRUCTURE
Within last decade a linear accelerating structure with an average loaded gradient of 100 MV/m at 12 GHz has been demonstrated in the CLIC study. Recently, it has been pro- posed to use the CLIC structure to drive an FEL linac. In contrast to CLIC the linac would be powered by klystrons not by a drive beam. The main advantage of this proposal is achieving the required energies in a very short distance, thus the facility would be rather compact. In this study, we present the conceptual design parameters of a facility which could generate laser photon pulses covering the range of 1- 75 Angstrom. Shorter wavelengths could also be reached with slightly increasing the energy.