Badri N. Tiwari

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Infrared (IR) detectors have been fabricated consisting of antenna-coupled metal-oxide-metal diodes (ACMOMDs). These detectors were defined using electron beam lithography with shadow evaporation metal deposition. They are designed to be sensitive to the IR range and work at room temperature without cooling or biasing. In order to achieve large arrays of(More)
The response of a bowtie antenna-coupled thermocouple operating at 10.6 μm is studied for varying lengths of a transmission line, which connects the antenna to the thermocouple and functions as an impedance-matching element. Peaks in the response are observed for several lengths of transmission line. Most notably, the response of a device with a(More)
We report experimental and simulation studies of the effect of interconnects on the polarization characteristics of nanoscale dipole antennas. In the long-wave infrared (LWIR) regime, isolation of the postdetection dc circuit and the optical-frequency antenna currents is difficult because the wavelength of the incident radiation is comparable to the(More)
In the late 1960s, a new concept was proposed for an infrared absorbing device called a “rectenna” that, combining an antenna and a nanoscale metal-insulator-metal diode rectifier, collects electromagnetic radiation in the terahertz regime, with applications as detectors and energy harvesters. Previous theories hold that the diode rectifies(More)
We review our previous work demonstrating planar dipole antenna structures which operate in the LW-IR regime (30 THz). Integrated metal-oxide-metal tunnel diodes are used as the rectifying element. These nanoantenna structures exhibit a polarization and length dependence expected from classical dipole antennas. We measure specific detectivities of(More)
Summary form only given. The integration of nanoelectronic sensor devices with silicon CMOS devices is an important avenue in nanoelectronics. There are countless nanoelectronic devices currently being explored, but they must be integrated with current technologies in order to be utilized in the near future. In this paper, we report on infrared sensors that(More)
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