A linear CMOS image sensor（CIS） with 16-stage time-delay integration（TDI） is proposed in this paper for bio-microfluidic imaging system. Compared to the traditional CIS for bio-microfluidic applications, this CIS ...
详细信息
ISBN:
(纸本)9781467397209
A linear CMOS image sensor（CIS） with 16-stage time-delay integration（TDI） is proposed in this paper for bio-microfluidic imaging system. Compared to the traditional CIS for bio-microfluidic applications, this CIS achieves high speed and high sensitivity in low illumination condition, which is suitable for biomicrofluidic. Moreover, a simple voltage accumulator and 10-bit full-differential single-slope analog-to-digital converter（ADC） are deployed for high-speed and lownoise readout.
In this paper, we present our recent progress of a high sensitivity complementary metal-oxide semiconductor-microelectromechanical systems (CMOS-MEMS) inertia sensor and its application to early-stage diagnosis of Par...
详细信息
ISBN:
(纸本)9781509029723
In this paper, we present our recent progress of a high sensitivity complementary metal-oxide semiconductor-microelectromechanical systems (CMOS-MEMS) inertia sensor and its application to early-stage diagnosis of Parkinson's disease. The feature of the CMOS-MEMS sensor is the use of gold proof mass. High density of gold enables us to increase sensitivity by reducing thermo-mechanical noise that is inversely proportional to proof mass. We then show the developed CMOS-MEMS multi-physics design environment. An equivalent circuit of a MEMS accelerometer has been designed to simultaneously understand both the mechanical and the electrical behaviors. One of the potential applications of the high sensitivity inertia sensor is also discussed by focusing on early-stage diagnosis of Parkinson's disease.
This presentation will discuss the latest developments in solidstate image sensor technology. Topics include 3D stacked image sensors, photon counting arrays, image sensors with phase detection pixels and time of fli...
详细信息
With the development of new technologies, researchers have recently focused their interest on flexible electronics to improve the interaction between users and devices. In this context, integrated ultra-low-pressure s...
详细信息
ISBN:
(纸本)9781538627334
With the development of new technologies, researchers have recently focused their interest on flexible electronics to improve the interaction between users and devices. In this context, integrated ultra-low-pressure sensors remain a technological challenge. Here, we show that organic single crystal-based air-gap transistors fabricated by soft lithography are extremely sensitive to mechanical strain and pressure. When low forces are applied to the suspended semiconducting crystal (rubrene), the gated transistors show that drain currents as output signals are extremely sensitive to the deformations. Incredibly high gauge factors, over 4000, are measured using this technique. Further investigation shows that the contact resistance at the rubrene-gold interface is responsible for the high sensing performances. Such a platform is also able to detect sound waves with high sensitivity, making these simple devices suitable for applications in pressure sensing.
Magnetoresistive devices are important components in a large number of commercial electronic products in a wide range of applications including industrial position sensors, automotive sensors, hard disk read heads, ce...
详细信息
Magnetoresistive devices are important components in a large number of commercial electronic products in a wide range of applications including industrial position sensors, automotive sensors, hard disk read heads, cell phone compasses, and solidstate memories. These devices are commonly based on anisotropic magnetoresistance (AMR) and giant magnetoresistance (GMR), but over the past few years tunneling magnetoresistance (TMR) has been emerging in more applications. Here we focus on recent work that has enabled the development of TMR magnetic field sensors with 1/f noise of less than 100 pT/rtHz at 1 Hz. Of the commercially available sensors, the lowest noise devices have typically been AMR, but they generally have the largest die size. Based on this observation and modeling of experimental data size and geometry dependence, we find that there is an optimal design rule that produces minimum 1/f noise. This design rule requires maximizing the areal coverage of an on-chip flux concentrator, providing it with a minimum possible total gap width, and tightly packing the gaps with MTJ elements, which increases the effective volume and decreases the saturation field of the MTJ freelayers. When properly optimized using this rule, these sensors have noise below 60 pT/rtHz, and could possibly replace fluxgate magnetometers in some applications. (C) 2017 Author(s).
The feasibility of the scheme to realize the novel bulk acoustic wave (BAW) sensor readout circuit has been verified by simulation, but further experimental verification is needed. Using the film bulk acoustic resonat...
详细信息
ISBN:
(纸本)9781467397193
The feasibility of the scheme to realize the novel bulk acoustic wave (BAW) sensor readout circuit has been verified by simulation, but further experimental verification is needed. Using the film bulk acoustic resonator (FBAR) with about 1.5 GHz series resonant frequency as the device under test (DUT), we designed and fabricated microstrip six-port network and detector on PCB which meet the requirements of FBAR resonant frequency measurement bandwidth (1.3 - 1.7 GHz). We obtained the measurement result of the reflection coefficient frequency (F-f) curve of the simulated DUT (50 Omega SMA matched load) by using radio frequency signal generator and oscilloscope. Comparing the measurement results from six-port reflectometer and vector network analyzer (VNA), we found they were quite consistent. We verified through experiment that "the six-port reflectometer- based BAW sensor readout circuit" can be used for the measurement of FBAR resonant frequency. Our research is useful for the practical BAW sensordevelopment and the VNA on a chip (VNA-on-chip) design.
Light propagation in strip and slot waveguide arrays for sensing are proposed and analyzed with a new theory of quantum walk. The waveguide arrays are designed on silicon-on-insulator and can be fabricated with mature...
详细信息
ISBN:
(数字)9781510604704
ISBN:
(纸本)9781510604698;9781510604704
Light propagation in strip and slot waveguide arrays for sensing are proposed and analyzed with a new theory of quantum walk. The waveguide arrays are designed on silicon-on-insulator and can be fabricated with mature and cost-efficient complementary metal-oxide semiconductor technology. A new slot waveguide array modified by conventional strip waveguide array with electric field mainly confined in the cladding region is investigated. Quantum walks have an exact mapping to classical phenomena as verified by experiments using bright laser light, so that they are introduced in our work as theoretical foundation. We take the width of waveguide of 450 nm and the coupling distance of 200 nm for strip waveguide array, and 420 nm and 180 nm for slot waveguide array, but with a 100nm slot in the center of waveguide. At last the waveguide array covered by a thin layer of graphene is investigated, which brings higher sensing property as well as a much better biocompatibility. With the monochrome light injection the intensity distribution at the end of the arrays changes with the refractive index of the sensing area (cladding region) and it can be explained by quantum walks theory. The designed waveguide arrays can possess compact footprint and high refractive index resolution, reaching 1E-11 RIU theoretically.
The beam quality mismatch of laser diode stacks in both axes limits many direct applications for fiber or solid laser pumping and material processing. In this paper, a one-step cutting-rotating beam shaping system has...
详细信息
The beam quality mismatch of laser diode stacks in both axes limits many direct applications for fiber or solid laser pumping and material processing. In this paper, a one-step cutting-rotating beam shaping system has been designed to homogenize the beam quality of two polarization-multiplexing laser diode stacks. Coupling laser diode stacks consisting of eight bars into a standard fiber with a core diameter of 600 mu m and an NA of 0.22 is achieved. The simulative result shows that the system will have an output power over 1056 W. By using the technique, the production of compact and high brightness fiber-coupling diode lasers can be directly used for laser cladding and laser surface hardening processes. (C) 2016 Optical Society of America
This paper describes a low-power fully differential cyclic analog-to-digital converter（ADC） for CMOS image sensor readout circuits. The Cyclic ADC with redundant signed digital（RSD） algorithm has various obviously...
详细信息
ISBN:
(纸本)9781467397209
This paper describes a low-power fully differential cyclic analog-to-digital converter（ADC） for CMOS image sensor readout circuits. The Cyclic ADC with redundant signed digital（RSD） algorithm has various obviously advantages, such as simpler circuit configuration and more tolerance to offset error of comparator. An operational amplifier with gain-boosting is used to increase the accuracy of the ADC. A prototype ADC is fabricated in 0.15 um 1P6M CMOS technology. The results indicate that the ADC has a signal-to-noise and distortion ratio（SNDR） of 72.4dB and a spurious free dynamic range（SFDR） of 80.4d B. The power dissipation is 140 uW with a 5V supply, and the chip size is 9um×570um.
The first ASIC-based Gauss error function(GEF module is proposed and fabricated in SMIC 180-nm process in this paper. A novel method is proposed to be used in the design. Experimental results show tha compared with th...
详细信息
ISBN:
(纸本)9781467397209
The first ASIC-based Gauss error function(GEF module is proposed and fabricated in SMIC 180-nm process in this paper. A novel method is proposed to be used in the design. Experimental results show tha compared with the design based on Taylor expansion method, the proposed design decreases the absolute erro by 99.21%, reduces the area by 77.21% and reduces the delay by 11.96%. It can be used as a Soft Intellectua Property（IP） Core or Digital Signal Processor（DSP） to be easily applied to all kinds of Neural Network applications. The design proposed and the corresponding design and optimization methods can promote the research and development of the implantable neura prosthesis bio-chip and neural network.
暂无评论