Abstract: A multiband sensing system includes an active multiband sensing unit configured to transmit a radio frequency (RF) signal in multiple bands and communicate with a network. The active multiband sensing unit includes at least one transmitting antenna configured to transmit the RF signal. The multiband sensing system includes a passive multiband sensing unit including at least one receiving antenna configured to receive the RF signal, an acoustic actuator powered by the received RF signal including an actuating sensor element configured to actuate in response to receiving extracted modulated information of the RF signal, and an acoustic detector. The acoustic detector includes a detector transmitting antenna configured to backscatter a new frequency band signal to the active multiband sensing unit and a detector sensor element configured to sense data. The sensed data is modulated over the received RF signal to produce the new frequency band signal.

Abstract: The disclosure relates to wireless detection of analytes (such as bacteria) labeled by electrically, dielectrically, or magnetically active nanoparticles, for example in quality control monitoring for food supply chain management. The disclosed apparatus includes a detection vessel or vial, a resonant sensor tag, an inductively coupled reader to induce and detect resonance in the sensor tag, and an active nanoparticle for labeling. The disclosed wireless detection apparatus and methods use active nanoparticles for the development of wireless sensor systems which can be designed to be compatible with the existing RFID technology infrastructure. For example, commercial RFID readers (e.g., hand-held) used for tracking and tracing operation can be used with the disclosed apparatus to induce and measure a corresponding resonance frequency.

Abstract: The disclosure relates to wireless detection of analytes (such as bacteria) labeled by electrically, dielectrically, or magnetically active nanoparticles, for example in quality control monitoring for food supply chain management. The disclosed apparatus includes a detection vessel or vial, a resonant sensor tag, an inductively coupled reader to induce and detect resonance in the sensor tag, and an active nanoparticle for labeling. The disclosed wireless detection apparatus and methods use active nanoparticles for the development of wireless sensor systems which can be designed to be compatible with the existing RFID technology infrastructure. For example, commercial RFID readers (e.g., hand-held) used for tracking and tracing operation can be used with the disclosed apparatus to induce and measure a corresponding resonance frequency.

Abstract: A multiband sensing system includes an active multiband sensing unit configured to transmit a radio frequency (RF) signal in multiple bands and communicate with a network. The active multiband sensing unit includes at least one transmitting antenna configured to transmit the RF signal. The multiband sensing system includes a passive multiband sensing unit including at least one receiving antenna configured to receive the RF signal, an acoustic actuator powered by the received RF signal including an actuating sensor element configured to actuate in response to receiving extracted modulated information of the RF signal, and an acoustic detector. The acoustic detector includes a detector transmitting antenna configured to backscatter a new frequency band signal to the active multiband sensing unit and a detector sensor element configured to sense data. The sensed data is modulated over the received RF signal to produce the new frequency band signal.