Sequential Photodamage Driven by Chaotic Systems in NiO Thin Films and Fluorescent Human Cells

Abstract

A laser ablation process assisted by the feedback of a sensor with chaotic electronic modulation is reported. A synchronous bistable logic circuit was analyzed for switching optical signals in a laser-processing technique. The output of a T-type flip-flop configuration was employed in the photodamage of NiO films. Multiphotonic effects involved in the ablation threshold were evaluated by a vectorial two-wave mixing method. A photoinduced thermal phenomenon was identified as the main physical mechanism responsible for the nonlinearity of index under nanosecond irradiation at 532 nm wavelength. Comparative experiments for destroying highly transparent human cells were carried out. Potential applications for developing hierarchical functions yielding laser-induced controlled explosions with immediate applications for biomedical photothermal processes can be contemplated.

Chaotic systems with variable indexs for image encryption application

“…Based on the assigned value of a in system (2), the chaotic system with an adjustable number of unknown parameters can be obtained. Now a chaotic system with only one unknown parameter, given by system (6), is selected and compared with a chaotic system with two identical unknown parameters, given by system (7). This demonstrates the effect of unknown parameters on the dynamical behavior of chaotic systems.…”

“…This demonstrates the effect of unknown parameters on the dynamical behavior of chaotic systems. The obtained chaotic system with only one unknown parameter is shown in system (6); a chaotic system with two identical unknown parameters is shown in system (7).…”

“…The bifurcation diagram of Fig. 4 shows the difference between the dynamic behavior of systems ( 6) and (7), indicating the sensitivity of the chaotic system to the initial conditions. 2) has changed significantly after varying the number of the same unknown parameters.…”

“…Many scholars have begun to organically combine chaotic systems with other fields to promote the study and application of chaotic systems among interdisciplinary studies. For example, the chaotic system is applied to secure communication, image encryption, environmental pollution prevention, and soil salinization analysis, among many other fields [1][2][3][4][5][6][7][8] . For the interdisciplinary research of chaotic systems, the chaotic system model is the basis for development and application.…”