公开(公告)号：US11536664B2

公开(公告)日：2022-12-27

申请号：US17705325

申请日：2022-03-27

Applicant: KING FAISAL UNIVERSITY

Inventor： Chawki Awada ,  Mohammed Ba Abdullah

IPC: G01J3/44 ,  G01N21/65

Abstract: The method for detecting a biomolecule by surface-enhanced Raman spectroscopy is a spectroscopic method of detecting a virus in a biological sample. A target substrate is prepared by depositing nanoparticles of a metal on a substrate of silicon nanowires. The nanoparticles may be gold, silver or a combination thereof. The far-field Raman spectra of at least one biomolecule associated with the virus are obtained. The biological fluid sample to be tested is then applied on the target substrate, and the surface-enhanced Raman spectroscopy spectra of the biological fluid sample on the target substrate are obtained. The far-field Raman spectra of the at least one biomolecule are compared against the surface-enhanced Raman spectroscopy spectra of the biological fluid sample on the target substrate.

公开(公告)号：US11946839B1

公开(公告)日：2024-04-02

申请号：US18242144

申请日：2023-09-05

Applicant: KING FAISAL UNIVERSITY

Inventor： Chawki Awada

IPC: B08B7/00 ,  B08B7/04 ,  G01N1/34 ,  G01N21/65

CPC classification number: G01N1/34 ,  B08B7/0057 ,  G01N21/658

Abstract: Methods for cleaning dye molecules on a surface of a metal/metal oxide nanocomposite substrate by irradiating the substrate with UV-visible light. The cleaning of the adsorbed dye molecules is confirmed using an ultrasensitive optical method.

公开(公告)号：US11815351B1

公开(公告)日：2023-11-14

申请号：US18210253

申请日：2023-06-15

Applicant: KING FAISAL UNIVERSITY

Inventor： Chawki Awada ,  Sayeed Rushd ,  Nagih Shaalan

IPC: G01N27/22 ,  G01B7/06 ,  G01N17/00

CPC classification number: G01B7/085 ,  G01N17/008 ,  G01N27/22

Abstract: The device for monitoring internal pipe deposit accumulation is a capacitance-based sensor for monitoring changes in thickness of deposits accumulating on an internal surface of a pipe. The device includes a pipe segment having opposed first and second open ends with at least one valve releasably sealing at least one of the first and second open ends. A first electrode, in the form of an electrically conductive cylindrical shell, is mounted on and surrounds a portion of an external surface of the pipe segment. A second electrode, in the form of an electrically conductive rod, is mounted coaxially within an interior of the pipe segment. An electrical power source is electrically connected across the first and second electrodes to form a cylindrical capacitor and changes in capacitance of the cylindrical capacitor are monitored by a controller.

公开(公告)号：US12098506B1

公开(公告)日：2024-09-24

申请号：US18442895

申请日：2024-02-15

Applicant: KING FAISAL UNIVERSITY

Inventor： Chawki Awada ,  Mohd Al Saleh Al Othoum ,  Mohammed Ibrahim Albossed

IPC: D21C3/02 ,  D21C9/16 ,  D21H11/12 ,  D21H27/06

CPC classification number: D21C3/022 ,  D21C9/163 ,  D21H5/0077 ,  D21H11/12

Abstract: A method of forming glass-like sheets using date palm seeds is provided. The method includes milling date palm seeds to form a powder. The powder is compressed to form discs, after which the discs are immersed in a delignification solution followed by removal from the delignification solution and washing. The discs formed from the date palm seed powder are immersed in a bleaching solution until a change in color is observed from opaque to transparent. The transparent discs thus formed are then hardened through application of an epoxy resin. The initial grinding procedure may be substituted by an initial slicing step of the date palm seeds in a similar method of forming the glass-like sheets.

公开(公告)号：US11939228B1

公开(公告)日：2024-03-26

申请号：US18141863

申请日：2023-05-01

Applicant: KING FAISAL UNIVERSITY

Inventor： Nagih Shaalan ,  Chawki Awada ,  Faheem Ahmed ,  Shalendra Kumar

IPC: C23C8/10 ,  C01G23/047 ,  C23C22/05 ,  C23C22/78 ,  C23C22/82 ,  C23C8/06

CPC classification number: C01G23/047 ,  C23C22/05 ,  C23C22/78 ,  C23C22/82 ,  C01P2002/82 ,  C01P2006/80

Abstract: Methods of obtaining a titanium dioxide nanofilm or microfilm are provided herein. A pure sheet of titanium is irradiated with a CO2 laser to produce the titanium dioxide nanofilm or microfilm. The titanium sheet can optionally be doped with an oxide, such as barium oxide. The method produces titanium dioxide nanofilms or microfilms that can be produced in more than one phase, such as a rutile phase, an anatase phase, or both combined. The titanium dioxide nanofilms or microfilms can be directly fabricated with high purity without any further processing.