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公开(公告)号：US11205737B1
公开(公告)日：2021-12-21
申请号：US17306243
申请日：2021-05-03
发明人： Abdullah G. Al-Sehemi , Ahmed A. Al-Ghamdi , Abul Kalam , Aysegul Dere , Fahrettin Yakuphanoglu
IPC分类号： H01L31/11 , H01L31/108 , H01L31/109 , H01L31/032
摘要： A photomemcapacitor device comprising a metal oxide semiconductor material is provided. The photocapacitor device comprises a p-n junction and a Schottky junction. A photomemcapacitor is provided for responding to photons at specified wavelengths.
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公开(公告)号：US10964899B1
公开(公告)日：2021-03-30
申请号：US17089796
申请日：2020-11-05
发明人： Abdullah G. Al-Sehemi , Ahmed A. Al-Ghamdi , Abul Kalam , Aysegul Dere , Fahrettin Yakuphanoglu
摘要： A hybrid junction solar light sensitive photodiode includes at least one inorganic p-n junction and at least one organic semiconductor p-n junction (pnpn) in series. The photoresponse properties of the photodiode is controlled using an inorganic layer and an organic layer. The photoactive layer is an organic semiconducting material having a mobility higher than 0.5 cm2/Vs. The metal oxide layer is an oxide semiconductor comprising of ternary oxides.
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公开(公告)号：US11214671B1
公开(公告)日：2022-01-04
申请号：US17199520
申请日：2021-03-12
发明人： Ahmed A. Al-Ghamdi , Abdullah G. Al-Sehemi , Abul Kalam , Aysegul Dere , Fahrettin Yakuphanoglu
摘要： A conductive nanocomposite which contains a mixed polymer matrix which contains a rubber and a polyether, carbon nanoparticles, and transition metal nanoparticles. The conductive nanocomposite has a nonlinear relationship between resistivity and temperature characterized by an exponential increase reaching a peak resistivity followed by an exponential decrease as temperature increases. Also disclosed is a method of forming the conductive nanocomposite involving mixing the components, aging, and pressing. The conductive nanocomposite forms a component of a heater that is self-regulating as a result of the nonlinear relationship between resistivity and temperature of the conductive nanocomposite. The nanocomposite also forms a component of a thermistor.
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公开(公告)号：US10982082B1
公开(公告)日：2021-04-20
申请号：US16995336
申请日：2020-08-17
发明人： Ahmed A. Al-Ghamdi , Abdullah G. Al-Sehemi , Abul Kalam , Aysegul Dere , Fahrettin Yakuphanoglu
摘要： A conductive nanocomposite which contains a mixed polymer matrix which contains a rubber and a polyether, carbon nanoparticles, and transition metal nanoparticles. The conductive nanocomposite has a nonlinear relationship between resistivity and temperature characterized by an exponential increase reaching a peak resistivity followed by an exponential decrease as temperature increases. Also disclosed is a method of forming the conductive nanocomposite involving mixing the components, aging, and pressing. The conductive nanocomposite forms a component of a heater that is self-regulating as a result of the nonlinear relationship between resistivity and temperature of the conductive nanocomposite. The nanocomposite also forms a component of a thermistor.
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5.发明授权公开(公告)号：US09803065B2
公开(公告)日：2017-10-31
申请号：US14789692
申请日：2015-07-01
CPC分类号： C08K7/00 , C08J3/203 , C08J3/215 , C08J3/28 , C08J5/18 , C08J7/047 , C08J2300/00 , C08J2329/04 , C08J2429/04 , C08K2003/0806 , C08K2201/001 , C08K2201/011 , H05K9/0007 , C08L29/04
摘要： A composite material for electromagnetic interference shielding is provided. The composite material comprises a polymer matrix with metal nanoparticles dispersed within the matrix. Methods of characterizing the nanocomposites are provided and demonstrate commercially relevant mechanical and electrical properties, particularly an electromagnetic interference shielding effectiveness in the microwave frequency. An economical process for preparing the nanocomposites is also provided.
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公开(公告)号：US09647223B2
公开(公告)日：2017-05-09
申请号：US14789622
申请日：2015-07-01
CPC分类号： H01L51/4233 , H01L51/0003 , H01L51/0073 , H01L51/4213 , H01L51/4293 , H01L2251/303 , Y02E10/549
摘要： A photoresponse device comprising a nanocomposite photoactive material is provided. The photoactive layer comprises a nanocomposite material of metal oxide nanoparticles dispersed within a photosensitizing organic semiconductor formed on a substrate. Methods of characterizing the nanocomposites are provided and demonstrate commercially relevant electrical and photodetection properties, particularly the ability to operate as a photodiode, photoconductor or photocapacitor. An economical process for preparing the nanocomposite and the photoresponse device is also provided as well as applications.
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公开(公告)号：US10181381B2
公开(公告)日：2019-01-15
申请号：US15240655
申请日：2016-08-18
IPC分类号： H01G7/04 , H01G5/017 , H01G7/02 , H01G4/20 , H01L41/193
摘要： A variable capacitor device that includes a dielectric layer comprising a shape-memory polymer, a first metal plate and a second metal plate, wherein the dielectric layer is sandwiched between the first and the second metal plates. The shape-memory polymer has a first thickness at a first temperature under a first external compressive load, a second thickness at a second temperature under a second external compressive load, wherein the first thickness is greater than the second thickness, the second temperature is greater than the first temperature, and the second external compressive load is greater than the first external compressive load. The shape memory polymer having the second thickness is configured to convert to the shape-memory polymer having the first thickness when sequentially subjected to the first external compressive load and the second temperature.
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公开(公告)号：US20180308998A1
公开(公告)日：2018-10-25
申请号：US15492267
申请日：2017-04-20
IPC分类号： H01L31/0352 , H01L31/0224 , H01L31/072 , H01L31/0336 , H01L31/18 , G01J1/42
CPC分类号： H01L31/035218 , G01J1/42 , G01J5/0853 , G01J5/28 , G01J2001/4266 , H01L31/022408 , H01L31/022425 , H01L31/0296 , H01L31/0336 , H01L31/035227 , H01L31/072 , H01L31/109 , H01L31/18 , Y02E10/50
摘要： A photodiode comprising a photoactive spinel oxide layer is described. This photoactive spinel oxide layer forms a contact with both a light absorption layer of quantum dots, quantum wires, or quantum rods, and an inorganic substrate layer. In some embodiments, the inorganic substrate layer and the photoactive spinel oxide layer form an isotype junction. Methods of characterizing the photodiode are provided and demonstrate commercially relevant electrical and optoelectronic properties, particularly the ability to operate as a photodetector with a high photosensitivity. An economical process for preparing the photodiode is provided as well as applications.
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公开(公告)号：US10923612B2
公开(公告)日：2021-02-16
申请号：US16944904
申请日：2020-07-31
IPC分类号： H01L31/00 , H01L31/0352 , H01L31/0224 , H01L31/072 , H01L31/0336 , H01L31/18 , G01J1/42 , G01J5/28 , H01L31/0296 , H01L31/109 , G01J5/08
摘要： A photodiode comprising a photoactive spinel oxide layer is described. This photoactive spinel oxide layer forms a contact with both a light absorption layer of quantum dots, quantum wires, or quantum rods, and an inorganic substrate layer. In some embodiments, the inorganic substrate layer and the photoactive spinel oxide layer form an isotype junction. Methods of characterizing the photodiode are provided and demonstrate commercially relevant electrical and optoelectronic properties, particularly the ability to operate as a photodetector with a high photosensitivity. An economical process for preparing the photodiode is provided as well as applications.
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公开(公告)号：US10240046B2
公开(公告)日：2019-03-26
申请号：US15203398
申请日：2016-07-06
发明人： Ahmed A. Al-Ghamdi , Omar A. Al-Hartomy , Falleh R. Al-Solamy , Nikolay Todorov Dishovsky , Petrunka Atanasova Malinova , Mihail Tsetskov Mihaylov
摘要： The method for fabricating a hybrid dual phase filler for elastomers includes: impregnation of carbon black with ethanol suspension of magnetite in a ball mill; drying of the dual phase mixture till constant weight; grinding of the dried product in a ball mill; thermal activation under vacuum in a specifically designed reactor followed by a grinding of the final product in a ball mill. The hybrid dual phase filler includes carbon black impregnated with ethanol suspension of magnetite, contains 5 to 50 mass % of magnetite and 95 to 50 mass % of carbon black. Magnetite is a powder and includes up to 5% of SiO2, particle size up to 50μ and density of 4.8-5.2 g/cm3 with a specific surface area (BET/) 400-900 m2/g; iodine number—370-750 mg/g; oil number 200-450 ml/100 g; total volume pore 0.5-1.5 cm3(STP)/g; micropore surface area 50-90 m2/g; external specific surface area 400-900 m2/g.
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