Search Results - shantanu+chakrabartty

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Quasi-Static Self-Powering, Sensing, and Data Logging

Executive SummarySlowly acting events can be very difficult to sense, especially for self-powered sensors. Most sensors require an external energy source in order to detect the desired property and report results. For some applications however, a self-powered sensor is desirable that uses energy from the object being sensed in order to record the data....
Published: 6/8/2021   |   Inventor(s): Nizar Lajnef, Shantanu Chakrabartty, Rigoberto Burgueno, Borchani Wassim
Keywords(s):   Category(s): Devices, Test and Measurement, Mechanical

Self-Powered Timer

Executive SummaryRemotely powered sensors are used in a wide variety of fields from medical devices to structural health monitoring. Most applications need to know the what, where and when of the recorded data. Currently sensors have limited ability to time-stamp events without incorporating power consuming peripherals. There is therefore a need to...
Published: 2/17/2023   |   Inventor(s): Shantanu Chakrabartty
Keywords(s):   Category(s): Devices, Test and Measurement

Non-Volatile Memory with Linear Hot-Electron Injection Technique and Strain Gauge

Executive SummaryA linear hot-electron injection technique is developed that simplifies the programming procedure for a non-volatile computer memory as well as a self-powered strain gauge enabled by this technique. Description of TechnologyA linear hot-electron injection technique is provided for a non-volatile memory arrangement. The non-volatile memory...
Published: 6/8/2021   |   Inventor(s): Shantanu Chakrabartty
Keywords(s):   Category(s): Test and Measurement, Devices, Subassemblies and Components

Temperature Compensation for Floating-Gate Memory Circuit

IntroductionNonvolatile computer memory is a type of memory chip that retains its data even when its power supply is turned off. One example is the erasable, programmable read-only memory chip (EPROM). Nonvolatile memory can store multiple bits per cell by storing a range of charge levels in a floating-gate analog memory cell. One of the challenges...
Published: 2/17/2023   |   Inventor(s): Shantanu Chakrabartty, Ming Gu, Chenling Huang
Keywords(s): Analog nonvolatile memory, EPROM, Floating-Gate Category(s): Electrical

Method and Apparatus for Autonomous Self-Powered Integrated Piezo-Floating Gate Sensors

IntroductionEach year, hundreds of thousands of hip and knee replacement surgeries are performed in the United States. Most of these prosthetic implants are expected to last for at least 20 years after which revision and replacement surgery will be required. In many cases, however, excessive wear and loosening of artificial joints leads to joint swelling,...
Published: 4/28/2023   |   Inventor(s): Shantanu Chakrabartty, Nizar Lajnef, Niell Elvin, Amit Gore
Keywords(s): Biomechanical Implants, Piezo-Electric Transducer, Structural Monitoring, Ultra-low Power Sensors, Wireless Sensors Category(s): Electrical, Devices, Test and Measurement