A5100453307- Advanced Memory and Neural Computing
- Semiconductor materials and devices
- Analytical Chemistry and Sensors
- Ferroelectric and Negative Capacitance Devices
- Analog and Mixed-Signal Circuit Design
- Advancements in Semiconductor Devices and Circuit Design
- Gas Sensing Nanomaterials and Sensors
- Neuroscience and Neural Engineering
- Nanowire Synthesis and Applications
- Electronic and Structural Properties of Oxides
- Transition Metal Oxide Nanomaterials
- Perovskite Materials and Applications
- Nanopore and Nanochannel Transport Studies
- Electrochemical Analysis and Applications
- Acoustic Wave Resonator Technologies
- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Microfluidic and Capillary Electrophoresis Applications
- Advancements in PLL and VCO Technologies
- Radio Frequency Integrated Circuit Design
- Photoreceptor and optogenetics research
- Photonic and Optical Devices
- Electrical and Bioimpedance Tomography
- Semiconductor materials and interfaces
- Ferroelectric and Piezoelectric Materials
Northwest Institute of Nuclear Technology
2023
Peking University
2023
Yangzhou University
2023
Maxim Integrated (United States)
2016-2018
Zhengzhou University
2018
Michigan State University
2015-2016
George Mason University
2012-2014
National Institute of Standards and Technology
2014
Nanjing University
2010-2011
National Laboratory of Solid State Microstructures
2010-2011
Airborne pollutants are a leading cause of illness and mortality globally. Electrochemical gas sensors show great promise for personal air quality monitoring to address this worldwide health crisis. However, implementing miniaturized arrays such demands high performance instrumentation circuits that simultaneously meet challenging power, area, sensitivity, noise dynamic range goals. This paper presents new multi-channel CMOS amperometric ADC featuring pixel-level architecture sensor arrays....
Well-developed bipolar resistive switching behaviors have been revealed in Pt/GaOx/ITO stacks without an electroforming process. By substituting platinum with titanium as the top electrode, polarity changed from “counter-Figure-8” to “Figure-8.” The modulation of Schottky barrier at Pt/GaOx interface induced by migration oxygen vacancies was proposed explain stacks, while Ti/GaOx/ITO ascribed redox reaction Ti/GaOx interface. Our experimental result further confirms vicinity electrode area...
High-density on-chip electrochemical biosensor arrays are advancing toward a crucial role in health monitoring and development of new medicines medical treatments. Nanopore ion channel based sensors especially have great potential but present demanding resolution/speed/power/area requirements on instrumentation circuits. This paper presents pixel-level current readout circuit group-cluster architecture to address the challenges high-performance arrays. Fabricated 0.5 μm CMOS, this...
In this work, multi-bit flash-like memory cell based on Si nanowire field-effect transistor and multiple Ta2O5 charge-trapping stacks have been fabricated fully characterized. The cells exhibited staircase, discrete charged states at small gate voltages. Such one is attractive for high density. These non-volatile devices fast programming/erasing speed, excellent retention, endurance, indicating the advantages of integrating multilayer charge-storage channel. high-performance can be...
The growing demand for personal healthcare monitoring requires a challenging combination of performance, size, power, and cost that is difficult to achieve with existing gas sensor technologies. This paper presents new CMOS monolithic microsystem meets these requirements through unique electrochemical readout circuits, post-CMOS planar electrodes, room temperature ionic liquid (RTIL) sensing materials. architecture design the CMOS-RTIL-based are described. device occupies less than 0.5mm2...
The resistive switching properties in the amorphous Lu2O3 films deposited by pulsed laser deposition have been investigated. Well unipolar behaviors of Pt/Lu2O3/Pt stacks were obtained. memory cells exhibited a high resistance ratio over 1×103, fast programming speed within 30 ns, and no obvious degradation after an endurance 300 cycles duration 3.2×106 s. first-principles calculation indicates that oxygen vacancies cubic will form defective energy level below bottom conduction band, reduce...
In depth characterization of nanopores such as ion channel proteins holds great value for medical and pharmaceutical applications. this paper, an electrochemical interface circuit (EIC) is presented that enables both readout individual high throughput implementation within a lab-on-CMOS array platform. The EIC was designed microsystem would facilitate proteomics research via parallel multiple with single resolution. Fabricated in 0.5 μm AMI CMOS, the can record rapid extremely weak current...
In this paper, tantalum pentoxide (Ta <formula formulatype="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex Notation="TeX">$_{2}$</tex></formula> O Notation="TeX">$_{5}$</tex></formula> ) has been investigated as the charge-storage dielectric for discrete, multibit memory applications. Two Ta containing stacks, Al xmlns:xlink="http://www.w3.org/1999/xlink"> <tex Notation="TeX">$_{3}$</tex></formula> /Ta /SiO and /Al , have fabricated...
The morphology control of CH3NH3PbI3 (MAPbI3) thin-film is crucial for the high-efficiency perovskite solar cells, especially their planar structure devices. Here, a feasible and effective post-treatment method presented to improve quality MAPbI3 films by using methylamine (CH3NH2) vapor. This process studied thoroughly, with smooth surface, high preferential growth orientation large crystals are obtained after 10 s treatment in MA atmosphere. It enhances light absorption, increases...
This paper presents instrumentations for high throughput single ion channel recording array used proteomics. The incorporates two-stage amplifier using shared operational transconductance structure. proposed sensor frontend reduces power consumption and area of circuit without any performance degradations in terms bandwidth noise. Two compact, low noise, circuits are introduced to address the As a results, over 400 channels implemented on chip. Design #1 is suitable currents as 20pA within...
Chronoamperometric gas sensor arrays show great promise for ultra-low power consumption and low cost wearable sensing devices human safety health monitoring. This paper presents a novel efficient instrumentation circuit with high sensitivity large dynamic range chronoamperometric arrays. combines an input digital modulation technique semi-synchronous incremental ΣΔ ADC structure to achieve very efficiency over sensitivity. The proposed was implemented in 0.5 μm CMOS technology. Measurement...
We have proposed a kind of memristive device based on the junctions employing Ti as reactive electrodes. The role electrically-derived redox in such switching is shown. structural and chemical evidence oxidation presented by TEM XPS experiment, respectively. Due to top electrode consequent drift oxygen vacancies, shows two distinct resistance states under sweeping voltage loading. ON state controlled tunneling process, while OFF Schottky emission conductive mechanism. failure behaviors are...
We have successfully fabricated an inverter based on ambipolar Si nanowire FETs. The is consisted of two identical FETs a single nanowire. engaged showed asymmetric characteristics under positive and negative gate bias. A CMOS-like can be realized the nanowire, where one devices behaves as nMOSFET other pMOSFET.
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