The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
We demonstrated a GaN-InGaN core-shell nanorod periodic array lasing under room temperature. Optical simulations and photoluminescence measurement revealed optically-coupled whisper gallery modes. The threshold pumping density was 80 kW/cm2 with a quality factor of 1940.
By implementing surface structures in vertical cavity surface emitting lasers as manifolds for curved space, we experimentally study the impacts of geometrical constraints on wave localization. We observe localized waves pinned to the maximal curvature in an elliptical-ring, and confirm the reduction in the localization length of waves by measuring near and far field patterns, as well as the corresponding...
Recently, the performance evaluation of V2X(Vehicle to Vehicle, Infrastructure, Pedestrian and so on, or namely Vehicle to Everything) Communication System becomes more and more imperative because of the rapid development and urgently-needed deployment of Intelligent Transportation System. 802.11p and LTE-V are the main communication technologies which would be used in V2X system. Performance evaluation...
This paper addresses three issues in integrating part-based representations into convolutional neural networks (CNNs) for object recognition. First, most part-based models rely on a few pre-specified object parts. However, the optimal object parts for recognition often vary from category to category. Second, acquiring training data with part-level annotation is labor-intensive. Third, modeling spatial...
The worldwide first 100MHz dynamic oxide semiconductor RAM (DOSRAM) is successfully demonstrated using a new high-mobility crystalline In-Ga-Zn-O (IGZO) material. The new IGZO exhibits around two times carrier mobility of conventional IGZO, while still achieving an extremely low off-state leakage (Ioff) at ∼10−21A (zA) level. Attributed to DOSRAM performance improvement, 100MHz normally-off (Noff)...
This paper presents the modified least squares iteration (MLSI). It is calculated by the least squares and trilateration to reduce positioning errors. In this study, environment model curves build to estimate the distance by ZigBee received dB value. Then, use trilateration to measure distance of reference and destination nodes. When the position errors appear, it will affect the obtained trilateration...
The worldwide first 100MHz dynamic oxide semiconductor RAM (DOSRAM) is successfully demonstrated using a new high-mobility crystalline In-Ga-Zn-O (IGZO) material. The new IGZO exhibits around two times carrier mobility of conventional IGZO, while still achieving an extremely low off-state leakage (Ioff) at ∼10−21A (zA) level. Attributed to DOSRAM performance improvement, 100MHz normally-off (Noff)...
In the clutch-to-clutch shifting control of automatic transmission system, the precise control of oil pressure in the clutch chamber is crucial, for which the proportional solenoid is the key component. The electrical parameters of solenoid will change considerably due to temperature variation, which will result in the change of input-output characteristics of solenoid and the deterioration of shifting...
With the rapid development of information technology and digital communication, the data types are more abundant by integration of various technologies. In this paper, based on the analysis of a large number of historical data of oil and water wells, the changes of some important parameters of the wells can be monitored and then used in the trend prediction and the early warning system. Subsequently,...
We develop an efficient general-purpose no-reference (NR) image quality assessment (IQA) model that based on a hypothesis that an effective combination of image features can be used to develop NR-IQA approaches having competitive performance with the state-of-the-art. First, we design a collection of features, then evaluate the usefulness of each feature on different kinds of distortions using different...
We report on plasmonic lasers with ZnO nanowire lying on single-crystalline silver film with different SiO2 thickness spacer. Spacer thickness were optimized to adjust the surface plasmon dispersion curve and resulting different group index.
We report the enhanced lasing performance in lead-halide perovskites covered with PMMA and Ag. Not only the perovskite can be protected from hydrolysis, but also the lasing thresholds can be greatly reduced resulting from the plasmonic effect.
QD based Bragg gratings surface emitting lasers using ITO as transparent cladding layers were demonstrated. Measured lasing peak locates at 1298nm and threshold current density of 210 A/cm2. The laser shows extremely small divergence surface-emitted beam and thermal redshift of 0.08 nm/K in peak wavelength.
Metal-insulator-semiconductor structures has widely adopted in plasmonics lasers. However, we found that the insulator is not necessary if permittivity combination of laser structures is properly designed. Single-mode laser operation was demonstrate in devices without artificial insulator layers. Moreover, the operation temperature can achieve to 353 K.
We have performed the condition to simultaneously triggered exciton-related polariton lasing and P-line exciton lasing in a ZnO micorcavity and verified the characteristics of their lasing behaviors. In addition, the threshold energy, linewidth, phase diagram, and angular dispersion are verified and discussed.
We study the mode switching behavior of GaAs-based high index contrast photonic crystal lasers influenced by deeply-etched air holes. Higher order guiding waves could coherently couple out of photonic crystal and affect the laser output characteristics which are observed by angular resolved photoluminescence spectra when the air filling factor increased.
No Reference Image Quality Assessment (NR-IQA) refers to automatic quality assessment of an image using an algorithm such that the only information that the algorithm receives is the distorted image. Moreover, the general purpose NR-IQA algorithms predicts the quality of image with no information about the distortion that affecting the tested image. BIQI framework [1] classifies the distortions in...
Through-silicon via (TSV) based 3-D ICs provide a promising solution for miniaturizing chips. However, thermal issue in 3-D ICs cannot be ignored. In this paper, we proposed a method based on 3-D transmission line matrix (3-D TLM) method to calculate heat generation in the lossy silicon substrate caused by TSV induced electrical field. Pseudo random bit sequences (PRBS) at different bit rates are...
Pinhole-array-based hand-held light field cameras can be used to capture 4-dimensional light field data for different applications such as digital refocusing and depth estimation. Our previous experiences suggest the design of the pinhole array mask is very critical to the performance of the camera, and the selection of mask parameters could be very different between applications. In this paper, we...
Traditionally, sequence alignment is done by software. In this paper, we design a special processor based on Basic Local Alignment Search Tool for Nucleotides (BLASTn) with a new Banded Two-hit method. When compared to the results obtained from the ungapped BLASTn software, NCBI v2.2.31+, our hardware always gives equal or better alignment results along with 2 to 6 times speed-up and a power consumption...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.