We report a new type of water-soluble ultrathin Au-Ag alloy nanowire (NW), which exhibits unprecedented behavior in colloidal solution. Upon growth thin metal (Pd, Pt, or Au) layer, the NW winds around itself to give metallic double helix. propose that winding originates from chirality within as-synthesized NWs, were induced untwist upon deposition.

We show that the microstructures of polycrystalline ice can serve as a confining template for one-dimensional assembly colloidal nanoparticles. Upon simply freezing an aqueous colloid, nanoparticles are excluded from grains and form chains in veins. The nanoparticle transferable be strengthened by polymer encapsulation. After coating with polyaniline shells, simple sedimentation is used to remove large aggregates, enriching single-line 40 nm gold total length several micrometers. When...

This letter proposes a frequency modulated continuous wave radar transceiver chip and method to position objects as well detect human limb motions. Implemented in 65-nm CMOS, the presents 2-GHz bandwidth centered at 15 GHz consumes only 210 mW, with performance among best of state art. Using chip, imaging experiments for moving targets arm raisings are carried out. In addition, demonstration both object positioning limb-motion detection by FMCW mode is believed be first time. beneficial...

This paper presents a mathematic method and cost-efficient circuit to measure the value of each component bio-impedance model at electrode-electrolyte interface. The proposed current excited triple-time-voltage oversampling (TTVO) deduces values by solving triple simultaneous electric equation (TSEE) different time nodes during excitation, which are voltage functions time. equations (TSEEs) allows random selections nodes, hence numerous solutions can be obtained single excitation. Following...

A Service-Oriented Architecture is essentially a collection of independent services with well-defined interfaces that can be accessed without knowledge their implementation. The architecture widely used in Grid computing to achieve resource virtualization, on-demand provisioning, and service (resource) sharing. As the has shown its potential as suitable environment for simulation modeling, Distributed Simulation on (SOAr-DSGrid) was proposed. Like other systems, time management crucial part...

This article presents a broadband single-pole ten-throw (SP10T) switch with low insertion loss (IL) performance. With the proposed three topologies, design breaks constraints between bandwidth (BW) and IL. The topologies include: 1) employing one-for-all symmetrically routed structure that achieves similar transfer functions for all pole-to-throw paths, hence, one matching network covers branches impedance matching; 2) series-transmission-line (TL)-shunt unit optimizes IL 3) 3-in-1...

This letter proposes a control parameter extraction (CPE) model for the reconfigurable bandpass filter (RBPF) to achieve fast reconfiguration of center frequency and broadband. The CPE consists an automatic hyperparameter generation (AHG) module multioutput XGBoost (MO-XGB) module. AHG, based on Bayesian optimization, is used generate MO-XGB hyperparameters. Through experiments fabricated circuit, extracted parameters RBPFs in 15 ms with root mean square error (RMSE) 0.0098 0.0129 bandwidth,...

This paper presents an equivalent circuit model for the electrode-electrolyte interface and aims at improving modeling accuracy of parasitic effects frequencies up to 300 MHz. Different from conventional model, electrode inductances, body loss capacitances, resistances are all included in proposed hybrid-π model. In addition, S-parameters obtained by a vector network analyzer innovatively used extract parameters frequency range 10 Hz Since reactance is proportional frequency, technique can...

Nowadays, more researchers in the simulation field are interested use of a service-oriented architecture and component-based system order to design efficient large-scale distributed systems. A Service-Oriented Architecture (SOA) is collection independent services with well-defined interfaces that can be accessed without knowledge their implementation. approach separates whole into different parts based on functionalities. In this paper, framework for Grid (SOAr-DSGrid) introduced. One major...

Simulation is a low cost alternative to experimentation on real-world physical systems. In light of the prevalence web services, issues relating distributed simulation using services have come fore in recent years. We proposed service-oriented architecture for simulations Grid (SOAr-DSGrid). SOAr-DSGrid facilitates development and execution different views (i.e., component-based view execution). At run time, one component may require information from another or decision-making. SOAr-DSGrid,...

Fiber Bragg grating (FBG)-based strain and temperature sensor array were embedded into the concrete structure in order to provide real-time information on its distribution. The sensors wavelength- multiplexed along a single fiber. specially designed optimized for their measurands. calibration experiments of those FBG sensors, parameter monitoring during structural curing processes also presented this paper. These fiber optic show many advantages over traditional electrical gauges thermocouples.

The static and switching characteristics of a novel wavelength-switching fiber laser source for an optically controlled phased-array antenna (OCPAA) has been studied experimentally. was configured within unidirectional ring cavity, with tunable Fabry-Perot filter, containing two sampled Bragg gratings wavelength spacing about 1.6 nm. It can individually scan the 25 required wavelengths in grating array OCPAA 0.08 s. speed, limited by relaxation oscillation, analyzed. polarization...

It is known that certain design consideration must be given to the concrete structures cater for possible ambient temperature variations. The thermal stress results from these changes can cause damage in ifthey are restrained or ignored stage. effects mainly due surrounding environmental conditions and some other special effects, such as heat of hydration during construction casting bitumen. In this paper, we present our preliminary on monitoring non-linear profiles simulated bridge decks...

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Layered transition metal dichalcogenides (TMDs) have been attracting great interest due to their excellent electrical, optical, and electrochemical properties they exhibit when exfoliated down mono- or a few-layer material. Driven by the unique properties, numerous methods developed isolate few-layered TMDs. In this study, lithium intercalation route which is initially established for MoS 2 WS has adopted exfoliate vanadium (VS , VSe VTe ). Following inherent of these bulk were studied along...

In this paper, we report the development of an Er3-doped dual-wavelength fiber laser constructed from a quasi-ring structure incorporated with two cascaded Bragg gratings (FBGs). A total output power 8.5 dBm and mode suppression ratio more than 50 dB have been obtained in cw operation case. The competition phenomenon for dual wavelengths lasing has investigated by reducing wavelength spacing FBGs. With locking, switching one to other, between single- dual- demonstrated adjusting rf frequency...

We report here a method to obtain the noise information on pulse width, intensity, cross-correlation of width and timing jitter by comparing power spectra fundamental second harmonic (SH) from CW mode-locked laser source. The experimental results parameters an active Nd:LiYF/sub 4/ system are also presented.