King Fahd University of Petroleum and Minerals

Mohammad Kamal Hossain

Qasem Ahmed Drmosh

Zain Hassan Yamani

Amar Kamal Mohamedkhair

Yukihiro Ozaki

Nouar Tabet

Abdulmajeed Hasan Hendi

Qasem Ahmed Qasem

Meer Abdul Mateen Khan

Umair Baig

Mohammed Ashraf Gondal

Abdullatif Mohammed Albaseer

Redhwan Abdo Moqbel

A surface plasmon resonance sensor system includes a sensor plate having a quartz glass substrate and a copper film sputtered onto the substrate and annealed for about two hours. A quartz prism is attached to a surface of the sensor plate, and a microfluidics unit containing carrier fluid is attached to the opposite surface. A target analyte reservoir is connected through a pump to inject target analytes into the microfluidics unit. A binder is attached to the copper film and binds to target analytes. A laser transmits a beam into the quartz prism at an incident angle that generates surface plasmons resonating with the copper film and reflects a phase shifted laser beam. Receive optics and a charge coupled device convert the phase shifted beam to electrical signals. A computing unit processes the electrical signals to compute refractive index changes based on phase shifts to indicate target analyte detection.

Hydrophobic copper thin film for surface plasmon resonance-based sensor

A hydrogen gas sensor with a substrate and a zinc oxide nanostructured thin film deposited on the substrate, wherein the zinc oxide nanostructured thin film has a lattice structure with a weight ratio of low binding energy Oions to medium binding energy oxygen vacancies in a range of 0.1 to 1.0, and a method of fabricating a gas sensor by thermally oxidizing a metal thin film under low oxygen partial pressure. Various combinations of embodiments of the hydrogen gas sensor and the method of fabricating the gas sensor are provided.

Method for making a zinc oxide thin film

Gas sensor assembly method

Method of forming a metal oxide nanostructured thin film

Method for fabricating a gas sensor with a metal oxide thin film

A surface-enhanced Raman scattering (SERS) substrate includes a silicon substrate having a surface having a plurality of silicon nanostructures (Si-NSs). The silicon nanostructures have a plurality of microscale valleys, and a plurality of terraces in the microscale valleys. The SERS substrate also includes a plurality of silver nanoparticles (Ag-NPs) disposed on the terraces of the silicon nanostructures. A method of preparing the SERS substrate, and a method for measuring SERS signal of an analyte.

Surface enhanced Raman scattering substrate

A method of increasing a surface-enhanced Raman scattering (SERS) signal of a compound is provided. The method includes dissolving the compound in water to form a solution, adding a substrate at least partially coated with gold nanoparticles to the solution to form a mixture, removing the substrate from the mixture and washing with water to form a SERS sample having at least a portion of molecules of the compound adsorbed to the gold nanoparticles on the substrate, and recording a SERS spectrum of the SERS sample. The gold nanoparticles are in a two-dimensional (2D) monolayer assembly on the substrate and are 10-250 nm in size. The SERS signal of the SERS spectrum is higher than a SERS signal of a SERS spectrum of the compound on the substrate without the gold nanoparticles.

Method for making SERS substrate

Method for forming substrate with gold surface

Method for making a gold-containing SERS substrate

A surface-enhanced Raman scattering (SERS)-active electrode include a solid support; a porous oxide layer containing transition metal oxide nanoparticles present on a surface of the solid support and has a mean pore size of 2 to 30 nm; and at least one of noble metal nanoneedles and noble metal nanorings present on the porous oxide layer. The noble metal nanoneedles have an average length of 350-800 nm, a flat end with an average width in a range of 100-150 nm, and a pointed end. The noble metal nanorings have a thickness of 50-300 nm and are present in the form of annular clusters having various elliptical shapes with an average diameter in a range of 35-60 nm.

SERS electrode having transition metal oxide nanoparticle layer

Method for making an SERS electrode

Method for improved Raman analysis with a monolayer-coated substrate

Method for measuring Raman nano-light spectra from solid support

Surface-enhanced Raman scattering-active electrode

A wind turbine control apparatus, method and non-transitory computer-readable medium are disclosed. The wind turbine control apparatus comprises a generator connected to a wind turbine with a drive train. The drive train comprises a rotor, a low speed shaft, a gear box, a high speed shaft, and a controller module. The controller module is configured to obtain a maximum power within a large range of varying wind velocities by operating the rotor at a neural network determined optimal angular speed for the current wind velocity.

Wind speed-tip speed ratio controlled wind turbine apparatus

Growing community of inventors

Dhahran, Saudi Arabia

Mohammad Kamal Hossain