-
Patent number: 10536281Abstract: A magnetic random access memory (MRAM) physically unclonable function (PUF) device that uses the geometric variations in magnetic memory cells to generate a random PUF response is described herein. Within the MRAM, one or more magnetic memory cells can be used for the PUF. The PUF response is generated by destabilizing the one or more magnetic memory cells and then allowing them to relax. The MRAM PUF has also a relatively small footprint among all other silicon PUFs. Timing and control signals for the MRAM PUF are also described along with power and delay characteristics for use with field and spin transfer torque driven destabilization operations.Type: GrantFiled: May 28, 2015Date of Patent: January 14, 2020Assignee: University of South FloridaInventors: Jayita Das, Kevin P. Scott, Drew H. Burgett, Srinath Rajaram, Sanjukta Bhanja
-
Patent number: 10517533Abstract: Provided is a Coupled Domain Sensor (CDS) that can be used to, for example, evaluate hydration and occlusion of blood in patients with edema using electrical and optical measurements. Advantageously, the CDS provides a quicker, more effective and accurate way of monitoring this medical condition.Type: GrantFiled: May 16, 2016Date of Patent: December 31, 2019Assignees: The Florida International University Board of Trustees, University of South FloridaInventors: Shekhar Bhansali, Karina Rincon, Jessica Ramella-Roman, Sanjukta Bhanja
-
Patent number: 10198402Abstract: A magnetic system for solving one or more quadratic optimization problems by associating each of a plurality of variables of a quadratic optimization problem with a nanomagnet subset of a nanomagnet array, driving the nanomagnets of the nanomagnet subset to an excited state, allowing the nanomagnets of the nanomagnet subset to enter a relaxed state after being driven to an excited state, wherein the nanomagnets magnetically couple with one another in the relaxed state to minimize the total magnetic coupling energy of the nanomagnet array, and sensing a magnetic coupling of the nanomagnets of the nanomagnet subset to solve the quadratic optimization problem.Type: GrantFiled: July 31, 2017Date of Patent: February 5, 2019Assignee: University of South FloridaInventors: Sanjukta Bhanja, Sudeep Sarkar, Ravi Panchumarthy, Dinuka K. Karunaratne
-
Patent number: 9720599Abstract: A magnetic system for solving a quadratic optimization problem by associating each of a plurality of variables of a quadratic optimization problem with a nanomagnet of a nanomagnet array, driving the nanomagnets of the nanomagnet array to an excited state, allowing the nanomagnets of the nanomagnet array to enter a relaxed state after being driven to an excited state, wherein the nanomagnets magnetically couple with one another in the relaxed state to minimize the total magnetic coupling energy of the nanomagnet array, and sensing a magnetic coupling of the nanomagnets of the nanomagnet array to solve the quadratic optimization problem.Type: GrantFiled: June 24, 2016Date of Patent: August 1, 2017Assignee: University of South FloridaInventors: Sanjukta Bhanja, Sudeep Sarkar, Ravi Panchumarthy, Dinuka K. Karunaratne
-
Publication number: 20170214532Abstract: A magnetic random access memory (MRAM) physically unclonable function (PUF) device that uses the geometric variations in magnetic memory cells to generate a random PUF response is described herein. Within the MRAM, one or more magnetic memory cells can be used for the PUF. The PUF response is generated by destabilizing the one or more magnetic memory cells and then allowing them to relax. The MRAM PUF has also a relatively small foot-print among all other silicon PUFs. Timing and control signals for the MRAM PUF are also described along with power and delay characteristics for use with with field and spin transfer torque driven destabilization operations.Type: ApplicationFiled: May 28, 2015Publication date: July 27, 2017Applicant: University of South FloridaInventors: JAYITA DAS, KEVIN P. SCOTT, DREW H. BURGETT, SRINATH RAJARAM, SANJUKTA BHANJA
-
Publication number: 20170060417Abstract: A magnetic system for solving a quadratic optimization problem by associating each of a plurality of variables of a quadratic optimization problem with a nanomagnet of a nanomagnet array, driving the nanomagnets of the nanomagnet array to an excited state, allowing the nanomagnets of the nanomagnet array to enter a relaxed state after being driven to an excited state, wherein the nanomagnets magnetically couple with one another in the relaxed state to minimize the total magnetic coupling energy of the nanomagnet array, and sensing a magnetic coupling of the nanomagnets of the nanomagnet array to solve the quadratic optimization problem.Type: ApplicationFiled: June 24, 2016Publication date: March 2, 2017Applicant: University of South FloridaInventors: Sanjukta Bhanja, Sudeep Sarkar, Ravi Panchumarthy, Dinuka K. Karunaratne
-
Publication number: 20160331314Abstract: The subject invention provides a Coupled Domain Sensor (CDS) that can be used to, for example, evaluate hydration and occlusion of blood in patients with edema using electrical and optical measurements. Advantageously, the CDS provides a quicker, more effective and accurate way of monitoring this medical condition.Type: ApplicationFiled: May 16, 2016Publication date: November 17, 2016Applicants: The Florida International University Board of Trustees, University of South FloridaInventors: Shekhar BHANSALI, Karina RINCON, Jessica RAMELLA-ROMAN, Sanjukta BHANJA
-
Patent number: 9286687Abstract: A system and method for image-processing that will facilitate automatically analyzing and estimating atomic force microscopy (AFM) images and magnetic force microscopy (MFM) images of fabricated nanomagnetic arrays to identify the magnetization states of the nanomagnets in the array. The system and method will automatically estimate the magnetization states of nanomagnetics disks into one of a plurality of energy minimum magnetization state configurations and provide an annotated image of the results of the estimation.Type: GrantFiled: August 25, 2014Date of Patent: March 15, 2016Assignee: University of South FloridaInventors: Ravi Panchumarthy, Dinuka K. Karunaratne, Sudeep Sarkar, Sanjukta Bhanja
No comments:
Post a Comment