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公开(公告)号：US20240345060A1
公开(公告)日：2024-10-17
申请号：US18135539
申请日：2023-04-17
发明人： Maha Nour , Ayman Amer , Abdullah Hassan Bukhamsin , Esraa Fakeih , Sumana Bhattacharjee , Khaled Nabil Salama
CPC分类号： G01N33/28 , G01N31/223
摘要： A system and methods for detecting aromatic compounds mixed with aliphatic compounds are provided. An exemplary system includes a lower substrate, a polymer film including a resistor mesh disposed on the polymer film, and an upper substrate disposed over the polymer film, wherein the upper substrate includes an opening exposing the resistor mesh.
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公开(公告)号：US20240336476A1
公开(公告)日：2024-10-10
申请号：US18297949
申请日：2023-04-10
发明人： Nadeem Qaiser , Maha Nour , Vincent Tung
CPC分类号： B81B7/0096 , H05B3/26 , H05B6/44 , H05B2203/003
摘要： Example methods and devices for improving uniformity of temperature distribution of a microheater or a microheater array are disclosed. One example method includes determining that a temperature of a first coil segment of multiple coil segments of a microheater is lower than a temperature of a second coil segment of the multiple coil segments, where the first coil segment is closer to an edge of the microheater than the second coil segment, and the microheater is a heating component of a microelectromechanical systems (MEMS) based device. A resistance of the first coil segment is increased through a reduction of a width of the first coil segment. After the reduction of the width of the first coil segment, a width of the second coil segment is adjusted based on a difference between the temperature of the first coil segment and the temperature of the second coil segment.
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公开(公告)号：US20240345062A1
公开(公告)日：2024-10-17
申请号：US18298776
申请日：2023-04-11
发明人： Maha Nour , Khawlah Kharashi , Khaled Nabil Salama , Abdullah Hassan Bukhamsin , Esraa Fakeih , Sumana Bhattacharjee
CPC分类号： G01N33/2888 , G01N27/002
摘要： A fuel detection film includes a cyclic olefin copolymer that is insoluble in acyclic saturated hydrocarbons. The fuel detection film has a porous structure that defines a plurality of pores. The plurality of pores are configured to allow flow of a lubrication oil through the fuel detection film via the plurality of pores. A housing is configured to couple to a pipe flowing the lubrication oil. The housing defines a slot. The slot is configured to hold the fuel detection film. The fuel detection film, while held by the slot of the housing that is coupled to the pipe as the lubrication oil flows in the pipe, is configured to at least partially dissolve in a presence of an aromatic hydrocarbon in the lubrication oil flowing through the fuel detection film.
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4.发明公开公开(公告)号：US20240329030A1
公开(公告)日：2024-10-03
申请号：US18128903
申请日：2023-03-30
发明人： Maha Nour , Abdullah Hassan Bukhamsin , Esraa Fakeih , Sumana Bhattacharjee , Khaled Nabil Salama
IPC分类号： G01N33/28
CPC分类号： G01N33/2835 , G01N33/2888
摘要： Systems and methods include a computer-implemented method for determining hydrocarbon fuel concentrations. A thin Cyclic Olefin Copolymer (COC) film of a COC layer with a conductive trace that completes an electrical circuit is sputtered. The thin COC film is positioned under tension so that the thin COC film is configured to dissolve upon contact with alkyl aromatic compounds present in hydrocarbon fuels. A sample of a hydrocarbon fuel is positioned on the thin COC film. A determination is made, in response to positioning the sample, that a dissolution of the thin COC film has broken the conductive trace and has rendered the electrical circuit open. A time duration is measured from an introduction of the sample during positioning to an opening of the electrical circuit. A concentration of the hydrocarbon fuel in the sample is determined based on the time duration.
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公开(公告)号：US20230384210A1
公开(公告)日：2023-11-30
申请号：US17828912
申请日：2022-05-31
发明人： Amjad Felemban , Maha Nour , Hamad Al Saiari
IPC分类号： G01N21/03 , G01N21/3577 , G01N33/28
CPC分类号： G01N21/0303 , G01N21/3577 , G01N33/28 , G01N2021/0389 , G01N2021/0321
摘要： A method includes providing a cuvette containing a fluid sample having a first substance and emitting light from a light source through the cuvette containing the fluid sample for a duration of time. The cuvette is made of a material that at least partially dissolves in the presence of the first substance. Over the duration of time, the cuvette at least partially dissolves and an intensity of light that passes through the cuvette and the fluid sample changes at a rate. The method also includes receiving, by a light detector, the light that passed through the cuvette, measuring a change in intensity of the received light over the duration of time, and determining that the rate of change in intensity of the light over the duration of time is greater than a threshold rate of change.
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公开(公告)号：US20240345064A1
公开(公告)日：2024-10-17
申请号：US18301610
申请日：2023-04-17
发明人： Maha Nour , Esraa Fakeih , Sumana Bhattacharjee , Khaled Nabil Salama , Abdullah Hassan Bukhamsin
IPC分类号： G01N33/28
CPC分类号： G01N33/2888
摘要： A system and method for detecting aromatic compounds mixed with aliphatic compounds are provided. An exemplary system includes a lower substrate including a test magnet, a polymer film including a film magnet, and an upper substrate disposed over the polymer film, wherein the upper substrate includes an opening extending to the polymer film.
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公开(公告)号：US20230149921A1
公开(公告)日：2023-05-18
申请号：US17529956
申请日：2021-11-18
发明人： Maha Nour , Amjad Felemban , Hamad Al Saiari
CPC分类号： B01L3/502715 , B01L3/5023 , B01L7/52 , G01N21/78 , G01N33/28 , B01L2400/0442 , B01L2300/18 , B01L2300/08 , B01L2300/0627 , B01L2200/147
摘要： A system includes a microfluidic device having a substrate, a reservoir defined in the substrate a microfluidic channel formed in the substrate, a microheater, and a detector. The reservoir is configured to store a fluid sample to be tested for the presence or absence of a compound. The microfluidic channel extends from the reservoir and includes a first portion fluidically connected to the reservoir, a second portion, and a detection portion fluidically connected between the first and second portions. The microheater is arranged adjacent to the reservoir and is configured to heat the fluid sample to a temperature at which the fluid sample releases a byproduct in response to being heated. The detector is arranged in the detector portion and is configured to indicate a presence or absence of the compound in the byproduct released from the heated sample.
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公开(公告)号：US10317388B2
公开(公告)日：2019-06-11
申请号：US16056020
申请日：2018-08-06
发明人： Ezzat Hegazi , Vincent Cunningham , Maha Nour
摘要： Methods, systems, and apparatus to diagnose lubrication oil deterioration. In one aspect, a method includes irradiating a lubrication oil sample with a light beam to emit a light-induced fluorescence, detecting and processing the light-induced fluorescence signal to determine a temporal variation of a fluorescence intensity, identifying a steady state of the light-induced fluorescence signal, processing the temporal variation of the fluorescence intensity to determine a lubrication oil parameter, and correlating the oil parameter to a calibration curve to diagnose the lubrication oil deterioration.
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公开(公告)号：US20180348192A1
公开(公告)日：2018-12-06
申请号：US16056020
申请日：2018-08-06
发明人： Ezzat Hegazi , Vincent Cunningham , Maha Nour
CPC分类号： G01N33/2888 , G01J3/4406 , G01J3/46 , G01N21/6402 , G01N21/6408 , G01N21/643 , G01N2021/6482 , G01N2201/129
摘要： Methods, systems, and apparatus to diagnose lubrication oil deterioration. In one aspect, a method includes irradiating a lubrication oil sample with a light beam to emit a light-induced fluorescence, detecting and processing the light-induced fluorescence signal to determine a temporal variation of a fluorescence intensity, identifying a steady state of the light-induced fluorescence signal, processing the temporal variation of the fluorescence intensity to determine a lubrication oil parameter, and correlating the oil parameter to a calibration curve to diagnose the lubrication oil deterioration.
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公开(公告)号：US20240345063A1
公开(公告)日：2024-10-17
申请号：US18301581
申请日：2023-04-17
发明人： Khawlah Kharashi , Maha Nour , Khaled Nabil Salama
CPC分类号： G01N33/2888 , G01N1/44 , G01N33/2835
摘要： Hydrocarbon contaminant detection system using polymer film includes a sensor assembly, a syringe, a heater assembly and a controller. The sensor assembly includes a cyclic olefin copolymer (COC) film including electrically conductive materials, and can complete an electrical circuit. The COC film can dissolve in a presence of a hydrocarbon contaminant, breaking the electrical circuit. The syringe can carry a lubrication oil sample to be tested using the sensor assembly. The syringe is operable to contact the lubrication oil sample with the COC film of the sensor assembly. The heater assembly can heat the lubrication oil sample before the lubrication oil sample is loaded to the syringe. The controller can perform operations including operating the syringe to flow the heated lubrication oil sample onto the COC film of the sensor assembly at a pre-determined flowrate.
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