NanoTechnology: Materials, Processes & Devices

We present a mm-sized, ultrasonically powered lensless CMOS image sensor as a progress towards wireless fluorescence microscopy. Access to biological information within the tissue has the potential to provide insights guiding diagnosis and treatment across numerous medical conditions including cancer therapy. This information, in conjunction with current clinical imaging techniques that have limitations in obtaining images continuously and lack wireless compatibility, can improve continual detection of multicell clusters deep within tissue. The proposed platform incorporates a...

Midwave infrared (MWIR) is significant for applications such as sensing, imaging, and spectroscopy. Traditional materials in this wavelength range, III-V and II-VI semiconductors, has poor performance due to their high Auger recombination rate and large dark currents. Due to the better properties of black phosphorus (BP) such as its low Auger recombination coefficient, BP-based mid-infrared light emitters and detectors have shown to outperform the state-of-the-art commercial devices. However, the scalability of these devices remains questionable because of the limitations of...

Integrated silicon photonic switches enable routing of optical signals and real-time reconfiguration of the optical networks in data centers and high performance computers. Reducing the operating voltage while preserving the required switching properties is vital to realize their full potential for real-time routing driven by CMOS electronics. Silicon photonic MEMS switches, based on electrostatic actuation, have employed high voltages because of constraints in mechanical designs aimed at eliminating parasitic effects. On the other hand, recent developments in piezoelectric thin...

Silicon, a mature platform for the semiconductor industry, has become a leading platform for future quantum technologies. As a high-purity material, it serves as a low-noise host for a variety of spin qubits. As a low-loss material, it is a desirable substrate and material platform for next generation quantum devices. In this project, we aim to engineer a hybrid quantum system on silicon with superconducting circuits and acceptor-based spin qubits. We plan to fabricate high-impedance resonators using high kinetic inductance superconductors to enable strong electric dipole coupling between...