Porous Silicon Thesis

We predict the proposed sensors can be easily fabricated and we expect them to show higher performance than other reported sensors of this type.Therefore, it will be of interest in the field of optical sensing in different fields.

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AB - Detailed investigations have been carried out into micromachining processes that will facilitate scalable, complex and uniform porosity structures based on porous silicon (PS) microelectromechanical systems (MEMS).It can be easily formed by electrochemical etching of silicon wafers in hydrofluoric acid (HF) electrolyte under an applied electric current.The electrochemical process allows for precise control over the properties of PSi such as porosity and thickness of the porous layer by adjusting the etching current density, time interval, and HF concentration.Different metals (Al, Ag, Au, and Pt) are attached to the top surface of the PSi-1DPCs structure to show Tamm/Fano resonances more clearly.To the best of our knowledge, it is the first time that Tamm/Fano resonances exhibit simultaneously in PSi-1DPCs within the same structure.The proposed structure has achieved a wavelength sensitivity of about 17 nm/RIU.In this work, we present a new theoretical study concerning Tamm/Fano resonance in a PSi-1DPC structure.The department has a long track record in the development of porous silicon microreactors for biocatalytic applications.A vast number of catalytic flow-through microsystems have been developed through out the years.The reflection spectra were calculated for the metal/PSi-1DPC structure by using the transfer matrix method (TMM) and the Bruggeman’s effective medium approximation (BEMA).The simulations show that the Tamm/Fano resonances are red-shifted towards the higher wavelengths with increasing the refractive index of the pores.


Comments Porous Silicon Thesis

  • Control of Pore Characteristics of Porous Silicon Using Non.

    Porous silicon has exhibited lower reflectance and higher surface area than the pristine silicon. This property of porous silicon can be applied to photovoltaic PV application for more efficient silicon solar cells and for higher performance of supercapacitors. NH4 Fl electrolytic etching solution has been used to fabricate porous…

  • Fabrication and Characterization of a Palladium/Porous.

    FABRICATION AND CHARACTERIZATION OF A PALLADIUM/ POROUS SILICON LAYER A Thesis presented to the Faculty of California Polytechnic State University, San Luis Obispo In Partial Fulfillment of the Requirements for the Degree Master of Science in Engineering, with Specializations in Materials Engineering by Nicholas Lui September 2013…

  • NJIT ETD "The photolithographic patterning of porous silicon.

    In this study, a simple photolithographic pattern process for porous silicon is described. The process utilizes silicon nitride or silicon carbide coated on the top of silicon wafer as a masks. Then a test pattern was projected on the sample by illumination during anodic etching in HFethanol solution which produced microcracks in regions illuminated during anodization.…


    IN POROUS SILICON A Thesis Submitted to the Faculty of Purdue University by Mawla Boaks In Partial Ful llment of the Requirements for the Degree of Master of Science in Electrical and Computer Engineering May 2018 Purdue University Indianapolis, Indiana…

  • Porous silicon and its application for micromachining.

    N2 - Truncated abstract Porous silicon PS, which exhibits valuable characteristics including photoluminescence, easily tunable refractive index, and large surface area, has gained enormous attention worldwide for innovative photoelectronic applications, such as light-emitting diodes, photodetectors, and sensors.…

  • PSi About - Porous Silicon

    Porous Silicon. From Austin, Texas Born June 14, 1979 Starting in 2005 as a regional process engineer for a globally active semiconductor machine manufacturer Semitool Inc. I learned to optimize and create chemical and mechanical processes to fulfill customer desires in wafer surface preparation, etching and deposition with wet chemsitry.…


    Porous silicon has the advantage that it can be easily fabricated, and offers the possibility of forming multilayer and graded index structures for more advanced filters.…

  • Porous silicon technology as a new route to monolithic.

    Changes of optical properties of porous silicon and oxidized porous silicon with respect to the bulk silicon are explained by effective media approach. Conclusions are made for suitability of porous silicon and oxidized porous silicon for silicon photonics applications. Various approaches for porous silicon localization are reviewed.…

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