Porous Silicon Thesis

Porous Silicon Thesis-89
Porous silicon microreactors for lab-on-a-chip based flow through catalytical processes as well as continuous synthesis.

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Photonic crystals (PCs) are new smart composite structures could control the propagation of electromagnetic waves with different frequencies.

The novel phenomenon appeared on PCs is the photonic band gap.

Based on these remarkable physical and engineering applications, PCs inspired researchers to replicate this idea on different types of waves e.g., elastic, acoustic, surface, electric and magnetic waves.

The PSi is a form of the silicon wafer that has introduced nanopores in its microstructure.

TY - THEST1 - Micromachining Based On Porous Silicon AU - Sun, Xiao PY - 2016Y1 - 2016N2 - 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).

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).In the present work, we present a novel metal/PSi-1DPC as a liquid sensor based on Tamm/Fano resonances.The operating wavelength range is from 6.35 to 9.85 μm in the mid-infrared (MIR) spectral region.The 1DPC sensor showed a sensitivity of about 200 nm/RIU, and it can be used for the determination of organic content in different liquid solutions.In addition to that, the well-known phenomenon Tamm resonance has been achieved in PCs and it has been used in the optical sensing techniques of PCs structures.Within the band gap, all frequencies of the incident electromagnetic waves are effectively attenuated.Breaking the periodicity of PCs and generating resonant modes inside the photonic band gaps increase the novelty of such periodic structures more than the perfect ones.The PSi-1DPC is a ternary structure composed of three different PSi layers repeated in N = 25 unit cells with a metal layer on the top of the ternary structure; Si/[PSi/metal.Also, we will study the optical properties and sensitivity of the proposed metal/PSi-1DPC sensor.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.

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    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…

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    Currently she focuses on study of porous silicon for biomedicine. Special interest is directed to development of SERS-active substrates based on metallized porous silicon for performing an extremely accurate analysis of physiological liquids.…

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    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.…

  • ABSTRACT APPLICATION OF POROUS SILICON IN TERAHERTZ.
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    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.…

  • PSi About - Porous Silicon
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    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.…

  • ENGINEERING POROUS SILICON PHOTONIC STRUCTURES TOWARDS FAST.
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    ENGINEERING POROUS SILICON PHOTONIC STRUCTURES. presented in this thesis was funded in part by the Army Research Office W911NF-09-1-0101 and W911NF-15-1-0176.…

  • NJIT ETD "The photolithographic patterning of porous silicon.
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    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.…

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    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…

  • Control of Pore Characteristics of Porous Silicon Using Non.
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    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…

  • Porous silicon and its application for micromachining.
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    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.…

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