A new cost-effective and efficient approach is proposed for texturing the crystalline silicon using the gas lift effect (GLE). The advantages of this approach over the conventional ones are that significantly lower amounts of IPA is used and much shorter etching time is required to achieve the same reflectivity. GLE is generated by taking advantage of the hydrogen bubbles evolved between the si...

Experiments were performed to examine the efficiency of surfactants to remove multi-walled carbon nanotubes (MWCNTs) from silicon substrates with nano and microscaled features. In the first set of experiments, nanoscale features were induced on silicon wafers using SF6 and O2 plasma. In the second set, well-defined microscale topological features were induced on silicon wafers using photo litho...

In this paper, dry etching of silicon micro-trenches were completed with a time multiplexed inductively coupled plasma (ICP) etcher. By change the time of etching and passivation cycles, applied electrode and coil powers, gas flow rates and the gas flow overlap due to the finite time response of the mass flow controllers, the etch rate of silicon and mask materials, aspect ratio, the profiles o...

We present a simulation of the Bosch process using the feature-scale modeling software FPS3D. FPS3D is a generic simulator that can be applied to any set of materials, plasmas, reactive gases, and reactions for both 2D and 3D simulations of etching and deposition. FPS3D can simulate multi-time-step processes for which the fluxes, species, reactions, ion energies, angular distributions, and othe...

Purpose: The aim of the study was to evaluate micro-tensile bond strength and the conditioning patterns of a self-etching primer bonding system to un-etched (with extended priming) and etched ground fluorosed enamel. Materials and Methods: Extracted premolars were classified according to severity of fluorosis using Thylstrup and Fejerskov index (TFI: 0, normal; 1-3, mild fluorosis; and 4-6, mod...

Background and aims. Er:YAG laser irradiation has been claimed to improve the adhesive properties of dentin; therefore, it has been proposed as an alternative to acid etching. The aim of this in vitro study was to investigate the shear bond strength of an etch-and-rinse adhesive system to dentin surfaces following Er:YAG laser and/or phosphoric acid etching. Materials and methods. The roots of ...

AIM The purpose of this review is to represent acids that can be used as surface etchant before adhesive luting of ceramic restorations, placement of orthodontic brackets or repair of chipped porcelain restorations. Chemical reactions, application protocol, and etching effect are presented as well. STUDY SELECTION Available scientific articles published in PubMed and Scopus literature databas...

In this work, the empirical parameterization describing the alpha particles’ track depth in CR-39 detectors is extended to describe longitudinal track profiles against etching time for protons and alpha particles. MATLAB based software is developed for this purpose. The software calculates and plots the depth, diameter, range, residual range, saturation time, and etch rate versus etching time. ...