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We demonstrate a long-term stable fiber laser mode-locked by a solution deposited and encapsulated black phosphorus (BP) saturable absorber. Our work highlights the potential of BP-based devices for photonic applications when operating under ambient conditions.
This paper uses the simplified charge-based EKV MOSFET model for studying the effects of total ionizing dose (TID) on analog parameters and figures-of-merit (FoMs) of 28nm bulk MOSFETs. These effects are demonstrated to be fully captured by the five key parameters of the simplified EKV model. The latter are extracted from the measured transfer characteristics at each TID. Despite the very few parameters,...
This paper considers the problem of active object recognition using touch only. The focus is on adaptively selecting a sequence of wrist poses that achieves accurate recognition by enclosure grasps. It seeks to minimize the number of touches and maximize recognition confidence. The actions are formulated as wrist poses relative to each other, making the algorithm independent of absolute workspace...
We introduce a novel approach to shape-based object classification and recognition through the use of a continuum manipulator. Noticing the fact that when a continuum manipulator wraps around an object in a whole-arm grasping, its own shape is indicative of the shape of the object, our approach enables learning and recognition of object classes based on the shapes of continuum wraps. It offers the...
To miniature RLG, the path length limit for navigation grade performance is estimated, and dither frequency and amplitude is increased to improve random walk coefficient; dither motor is optimized to obtain minimum size and good vibration performance; a structural, piezoelectric coupled finite element model for path length control (PLC) transducer is established, to increase the compensation ability...
The SnSbNi solder pastes were reflowed at 270°C and 280°C between the MvpLED chip and the AlN ceramic substrate, and then the SnSbNi solder joints were aged respectively at 200°C for 1h and at 250°C for 3h. The interfacial microstructure and constituents were investigated by SEM and EDS. After the reflow reactions, a thin layer of IMCs was formed at the chip/solder and solder/substrate interfaces,...
In this work, we proposed to demonstrate the entire 3D coronary tree using panoramic maximum intensity projection (MIP) of coronary arteries, and to detect and quantify coronary stenosis from computed tomography coronary angiography (CTCA). The performance of the proposed method was assessed in comparison with invasive coronary angiography (ICA) as reference standard. Six anonymized CTCA datasets...
A concatenated soft-decision channel coding scheme consisting of an inner LDGM code and an outer staircase code is proposed. The soft-decision LDGM code is used for error reduction while the majority of bit errors are corrected by the low complexity hard-decision staircase code. Decoding complexity of the concatenated code is quantified by a score based on the number of edges in the LDGM code Tanner...
DC, RF and noise parameters of GaAs pHEMTs with 100 nm gate length and widths (μm) of 2×10, 2×15, 2×25, 2×50, 2×75, 4×50 were investigated with the focus on test structure with gate width of 2 × 50 µm. Using a Maury Microwaves ATS system in the 8–50 (K, Ka), 50–75 (V) and 75–110 GHz (W) frequency band, the noise parameters were measured and calculated employing the Y-Factor method. The sources of...
We demonstrate a multipoint-to-point network architecture for optical metro networks with distributed FEC encoding based on modified staircase codes. We present a simple rate-adaptation scheme and demonstrate throughput maximization on the network.
Two dimensional (2-D) inter-symbol-interference (ISI), consisting of ISI in the down track direction and inter-track interference (ITI) along the cross-track direction, is a major factor that severely degrades the performance of ultra-high density magnetic recording systems.
Deposition is found in many engineering processes, such as the asphaltene deposition in oil pipelines/wellbores, and biological and chemical foulings in pipes or heat exchangers. These deposition processes usually occur in a two-phase flow environment. This study develops a model for two-phase flow with deposition in vertical pipes. The model consists of three modules: Fluid Transport, Particle Transport,...
Asphaltene deposition in wellbores/pipelines causes serious production losses in the oil and gas industry. This work presents a numerical model to predict asphaltene deposition in wellbores/pipelines. This model consists of two modules: a Thermodynamic Module and a Transport Module. The Thermodynamic Module models asphaltene precipitation using the Peng-Robinson Equation of State with Peneloux volume...
Slot antennas on dielectric-coated perfectly conducting objects have extensively been studied by many investigators. For these problems, exact analytic solutions are available only for a limited number of geometries. These geometries include circular and elliptic cylinders, as well as, spheres and spheroids. Since these solutions maintain mathematical rigor, they provide not only exact solutions for...
Lattice Gas Automata (LGA) can be considered as an alternative to the conventional differential equation description of problems in electromagnetics. LGAs are discrete dynamical systems that are based on a microscopic model of the physics being simulated. The basic constituents of an LGA are discrete cells. These cells are interconnected according to certain symmetric requirements to form an extremely...
Lattice gas automata (LGA) are an alternative to the traditional differential equation based numerical methods now widely used in computational electromagnetics [1]. Lattice gas automata are based on studying the behaviour of an extremely large array of simple cells. The states of the cells are very simple, usually consisting of only a few bits per cell. A lattice gas is a microscopic description...
The study of wave mechanics in electromagnetism has traditionally been approached from a differential equation description of the physics. An alternative are Lattice Gas Automata, which arc discrete dynamical systems and are based on a microscopic model of the physics being simulated. A lattice gas automaton (LGA) is an extremely large regular lattice of simple interconnected cells where each cell...
The characteristics of a prolate spheroidal antenna, excited by a rotationally symmetric narrow slot, have been discussed by Wait [1]. Sinha and MacPhie[2] have discussed the admittance characteristics of an antenna system consisting of two symmetrically center-fed prolate spheroids in parallel configuration. Ciric and Cooray[3] have further investigated such two spheroidal dipole antennas in an arbitrary...
We demonstrate a self-starting dual-wavelength ytterbium-doped fiber laser Q-switched by using a solution processed few-layer tungsten disulfide (WS2)-polymer composite saturable absorber, operating at the wavelength of 1030.2 nm and 1034.5 nm, respectively.
We demonstrate mode-locked pulse generation in an Er-doped fiber laser by using a microfiber-based TiS2 saturable absorber. The edge-induced sub-bandgap absorption is proposed as the primary explanation for saturable absorption in this material.
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