• Analysis of an Approximated Model for the Depletion Region Width of Planar Junctionless Transistors 

      Nowbahari, Arian; Roy, Avisek; Akram, Muhammad Nadeem; Marchetti, Luca (Peer reviewed; Journal article, 2019)
      In this paper, we investigate the accuracy of the approximated analytical model currently utilized, by many researchers, to describe the depletion region width in planar junctionless transistors (PJLT). The proposed analysis ...
    • Carbon Nanotube Growth on the Polysilicon Layers of CMOS 

      Roy, Avisek; Aasmundtveit, Knut Eilif (Peer reviewed; Journal article, 2023)
      Direct synthesis of CNTs in an established IC technology such as CMOS can effectively utilize CNT properties in smart sensing applications. With that vision, we designed and fabricated polysilicon microheaters in CMOS chips ...
    • Carbon Nanotubes Directly Integrated in CMOS by Local Synthesis - Towards a Wafer-Level Process 

      Aasmundtveit, Knut; Roy, Avisek; Ta, Bao Quoc (Chapter, 2019)
      Integrating nanomaterials in electronic circuitry and in microsystems is highly desired for fully exploiting the functionality of nanomaterials such as Carbon Nanotubes (CNTs), utilizing the signal processing of ...
    • Design and fabrication of CMOS microstructures to locally synthesize carbon nanotubes for gas sensing 

      Roy, Avisek; Azadmehr, Mehdi; Ta, Bao Quoc; Häfliger, Philipp; Aasmundtveit, Knut (Peer reviewed; Journal article, 2019)
      Carbon nanotubes (CNTs) can be grown locally on custom-designed CMOS microstructures to use them as a sensing material for manufacturing low-cost gas sensors, where CMOS readout circuits are directly integrated. Such a ...
    • Design of Silicon Cap for Hermetic Packaging of Microbolometer Focal Plane Arrays 

      Xia, Hexin; Akram, Muhammad Nadeem; Roy, Avisek; Bardalen, Eivind; Nguyen, Hoang Vu; Hoivik, Nils; Aasmundtveit, Knut Eilif; Ohlckers, Per (Peer reviewed; Journal article, 2021)
      A microbolometer array is used as a detector in an infrared camera. It converts the temperature change induced by the incoming longwave infrared light into an electrical signal for obtaining the thermal image information. ...
    • Direct Synthesis of Carbon Nanotubes in CMOS-Layout of Micro-heaters 

      Roy, Avisek; Azadmehr, Mehdi; Häfliger, Philipp; Ta, Bao Quoc; Aasmundtveit, Knut (Peer reviewed; Journal article, 2019)
      Direct integration of Carbon Nanotubes (CNTs) in CMOS is important for commercially manufacturing low-cost CNT-based sensors. In such compact sensors, CNTs would act as sensing element, and CMOS circuits would process ...
    • Embedding of Ultra-thin Monolithic Active Pixel Sensor (MAPS) 

      Loaiza Jaramillo, Pedro Fernando (Master thesis, 2023)
      The ongoing technological advances in the field of flexible electronics using ultra-thin chips due to their extraordinary properties, offer lightweight and adaptable electronic systems for multiple applications. These ...
    • Evaluation of Silicon Diaphragms for Hermetic Packaging of Microbolometer Arrays 

      Xia, Hexin; Akram, Muhammad Nadeem; Bardalen, Eivind; Roy, Avisek; Aasmundtveit, Knut; Øhlckers, Per (Chapter, 2020)
      Hermetic packaging is a critical requirement for microbolometers to maintain long-term reliability. A thinner diaphragm is desirable for vacuum packaging of microbolometers to obtain higher infrared light transmission. ...
    • Local Synthesis of Carbon Nanotubes on CMOS-MEMS Microheaters for Sensing Applications 

      Roy, Avisek (Doctoral dissertations at the University of South-Eastern Norway;84, Doctoral thesis, 2020)
      Research on nanomaterials is growing rapidly due to their extraordinary properties, which can significantly differ from their bulk form. The physicochemical properties of nanoscale materials are diverse and can be engineered ...
    • Post-CMOS processing challenges and design developments of CMOS-MEMS microheaters for local CNT synthesis 

      Roy, Avisek; Ta, Bao Quoc; Azadmehr, Mehdi; Aasmundtveit, Knut Eilif (Peer reviewed; Journal article, 2023)
      Carbon nanotubes (CNTs) can be locally grown on custom-designed CMOS microheaters by a thermal chemical vapour deposition (CVD) process to utilize the sensing capabilities of CNTs in emerging micro- and nanotechnology ...
    • Wafer Level Capping Technology for Vacuum Packaging of Microbolometers 

      Zoschke, Kai; Manier, Charles Alix; Oppermann, Hermann; Meier, Dirk; Malik, Nishant; Zakizade, Elahe; Michel, Marvin; Roy, Avisek; Nguyen, Hoang-Vu; Nguyen, Thanh Phuc (Chapter, 2023)
      This paper presents novel technology developments for vacuum wafer level packaging of microbolometer arrays for thermal infrared sensors targeting applications in automotive, safety, and security/surveillance. The concept ...