公开(公告)号：US20240174197A1

公开(公告)日：2024-05-30

申请号：US18523977

申请日：2023-11-30

Applicant: Purdue Research Foundation

Inventor： Mukerrem Cakmak ,  Armen Yildirim ,  Jesse Grant ,  Mahmoud Yousef Ghannam ,  Nagarpita Vidyanag

IPC: B60R21/34 ,  B60R19/48 ,  B60R21/0136 ,  H10N30/04 ,  H10N30/092 ,  H10N30/30 ,  H10N30/85 ,  H10N30/87

CPC classification number: B60R21/34 ,  B60R19/483 ,  B60R21/0136 ,  H10N30/04 ,  H10N30/092 ,  H10N30/302 ,  H10N30/852 ,  H10N30/878

Abstract: Flexible piezoelectric composite films, flexible piezoelectric impact sensors, pedestrian protection systems, and related methods. Such a flexible piezoelectric composite film includes a flexible matrix and a plurality of piezoelectric particles dispersed and embedded within the flexible matrix. The piezoelectric particles are arranged in columns aligned in a Z-direction along a thickness of the flexible matrix.

公开(公告)号：US11957058B2

公开(公告)日：2024-04-09

申请号：US18111545

申请日：2023-02-18

Applicant: Purdue Research Foundation

Inventor： Mukerrem Cakmak ,  Armen Yildirim ,  Rahim Rahimi

IPC: C08K3/04 ,  H01L41/08 ,  H01L41/18 ,  H04R17/00 ,  H10N30/85 ,  H10N30/87

CPC classification number: H10N30/852 ,  H04R17/005 ,  H10N30/875 ,  H10N30/878

Abstract: A method of transducing electrical energy to sound is disclosed which includes providing a transducer, the transducer includes lead zirconate titanate (PZT) particles mixed with graphene nanoplatelets (GNPs) in a flexible substrate aligned in a first direction, forming a transducer subsystem, a first conductive protective electrode having a width and a length configured to provide a first electrical connectivity to an external circuit, and a second conductive protective electrode having the width and the length and configured to provide a second electrical connectivity to the external circuit, wherein the transducer subsystem is sandwiched between the first and second conductive protective electrodes, and providing an external circuit configured to provide an electrical signal to the first and second conductive protective electrodes to thereby transduce the electrical signal to sound.

公开(公告)号：US20230407524A1

公开(公告)日：2023-12-21

申请号：US18453224

申请日：2023-08-21

Applicant: Purdue Research Foundation

Inventor： Mukerrem Cakmak

IPC: D01D5/00 ,  B29C39/14 ,  B29C39/18 ,  B29C59/04 ,  B32B27/00 ,  B29C41/28

CPC classification number: D01D5/0007 ,  B29C39/146 ,  B29C39/18 ,  B29C59/046 ,  B32B27/00 ,  B29C41/28 ,  B05C5/0245

Abstract: A roll-to-roll manufacturing machine suitable for processing and producing polymer films that contain nanostructures, including but not limited to multifunctional polymer films. The machine applies a liquid polymer on a substrate to form a liquid polymer film, at least partially embeds nanostructures into the liquid polymer film, melt casts a layer of a molten polymer on the liquid polymer film to produce a thin polymer film, organizes the nanostructures in a thickness direction of the thin polymer film comprising applying an electric field to the thin polymer film, aligns the nanostructures in the thin polymer film by simultaneously subjecting the thin polymer film to heat and a field that aligns the nanostructures, and solidifies the thin polymer film to freeze the nanostructures along nanocolumns in a thickness direction of a solidified polymer film resulting therefrom.

公开(公告)号：US20230240146A1

公开(公告)日：2023-07-27

申请号：US18111545

申请日：2023-02-18

Applicant: Purdue Research Foundation

Inventor： Mukerrem Cakmak ,  Armen Yildirim ,  Rahim Rahimi

IPC: H10N30/85 ,  H04R17/00 ,  H10N30/87

CPC classification number: H10N30/852 ,  H04R17/005 ,  H10N30/875 ,  H10N30/878

Abstract: A method of transducing electrical energy to sound is disclosed which includes providing a transducer, the transducer includes lead zirconate titanate (PZT) particles mixed with graphene nanoplatelets (GNPs) in a flexible substrate aligned in a first direction, forming a transducer subsystem, a first conductive protective electrode having a width and a length configured to provide a first electrical connectivity to an external circuit, and a second conductive protective electrode having the width and the length and configured to provide a second electrical connectivity to the external circuit, wherein the transducer subsystem is sandwiched between the first and second conductive protective electrodes, and providing an external circuit configured to provide an electrical signal to the first and second conductive protective electrodes to thereby transduce the electrical signal to sound.

公开(公告)号：US11588097B2

公开(公告)日：2023-02-21

申请号：US16699084

申请日：2019-11-28

Applicant: Purdue Research Foundation

Inventor： Mukerrem Cakmak ,  Armen Yildirim ,  Rahim Rahimi

IPC: C08K3/04 ,  H01L41/08 ,  H01L41/18 ,  H04R17/00 ,  H01L41/047

Abstract: A transducer is disclosed which includes lead zirconate titanate (PZT) particles mixed with graphene nanoplatelets (GNPs) in a flexible substrate aligned in a first direction, forming a transducer subsystem, a first conductive protective electrode having a width and a length providing an electrical connectivity to an external circuit, a second conductive protective electrode having the width and the length providing an electrical connectivity to the external circuit, wherein the transducer subsystem is sandwiched between the first and second conductive protective electrodes.

公开(公告)号：US20220074662A1

公开(公告)日：2022-03-10

申请号：US17526080

申请日：2021-11-15

Applicant: Purdue Research Foundation

Inventor： Mukerrem Cakmak ,  Alina Alexeenko

IPC: F26B5/06 ,  F26B13/24 ,  A23L3/44 ,  A61K9/19 ,  G01N30/72 ,  G01N30/86

Abstract: Roll-to-roll freeze-drying (lyophilization) system and process for facilitating freeze-drying processes and enabling the collection of data by which a freeze-drying process can be monitored and evaluated. Such a system includes a roll-to-roll freeze-drying apparatus adapted to continuously freeze and dry a liquid to form a freeze-dried and encapsulate freeze-dried sheet portions of the freeze-dried sheet to create premeasured pouches containing the freeze-dried sheet portions. The system further includes a metrology section that monitors any of the freeze-dried sheet and the freeze-dried sheet portions during the freezing and drying of the liquid to generate data for controlling the freezing and drying of the liquid.

公开(公告)号：US11175092B2

公开(公告)日：2021-11-16

申请号：US16338532

申请日：2017-10-10

Applicant: Purdue Research Foundation

Inventor： Mukerrem Cakmak ,  Alina Alexeenko

IPC: F26B5/06 ,  F26B13/24 ,  A23L3/44 ,  A61K9/19 ,  G01N30/72 ,  G01N30/86

Abstract: Roll-to-roll freeze-drying (lyophilization) system and process for facilitating freeze-drying processes and enabling the collection of data by which a freeze-drying process can be monitored and evaluated. Such a system includes a roll-to-roll freeze-drying apparatus adapted to continuously freeze and dry a liquid to form a freeze-dried and encapsulate freeze-dried sheet portions of the freeze-dried sheet to create premeasured pouches containing the freeze-dried sheet portions. The system further includes a metrology section that monitors any of the freeze-dried sheet and the freeze-dried sheet portions during the freezing and drying of the liquid to generate data for controlling the freezing and drying of the liquid.

公开(公告)号：US20200013946A1

公开(公告)日：2020-01-09

申请号：US16571794

申请日：2019-09-16

Applicant: Purdue Research Foundation

Inventor： Mukerrem Cakmak ,  Armen Yildirim ,  Rahim Rahimi ,  Saeed Mohammadi ,  Ali Shakouri

IPC: H01L41/193 ,  G01L1/18 ,  G01L9/06 ,  H01L41/047 ,  H01L41/113 ,  H01L41/08 ,  H01L41/09 ,  H01L41/187

Abstract: A sensor is disclosed which includes a piezoelectric layer, a piezoresistive layer, one or more electrode layers coupled to the piezoelectric layer and to the piezoresistive layer, the piezoelectric layer configured to provide an electrical signal in response to application of a dynamic disturbance, and the piezoresistive layer configured to provide a change in resistivity in response to application of a static disturbance.