Communication: Triplet electron‐transfer salts are predicted to exhibit bulk ferromagnetic behavior at higher temperatures than their singlet analogues. To test this expected trend, the title compound, which is isostructural with [FeCp ] ⊙⊕ [TCNE] ⊙⊖ (Cp * = pentamethylcyloopentadienide; TCNE tetracyanoethylene) exhibits a Curie temperature, T c , of 4.8 K has been synthesized. The synthesis and magnetic characterization new found have 8.8 K, reported.

CdS nanoparticles exhibit size dependent optical and electrical properties. We report here the photocurrent I–V characteristic studies of nanoparticle devices. A sizable short circuit was observed in detection range governed by clusters. speculate on mechanisms leading to emission these nanometer scale systems.

We report ultra large photo responsivity ℜ (ratio of photo-generated current to absorbed power) in a single nanowire (NW) device made from strand (diameter ~30nm and length ~200nm) an organomettalic semiconducting charge transfer complex material CuTCNQ. The shows 8x10(4) A/Watt at 1 volt applied bias with enhancement over the dark exceeding 10(5) zero bias. observed has spectral dependence that strongly follows main absorption peak (close 405 nm) showing primary role carriers.

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAn upper critical point in a lamellar liquid crystalline phaseJ. Ockelford, B. A. Timimi, K. S. Narayan, and G. J. T. TiddyCite this: Phys. Chem. 1993, 97, 26, 6767–6769Publication Date (Print):July 1, 1993Publication History Published online1 May 2002Published inissue 1 July 1993https://pubs.acs.org/doi/10.1021/j100128a003https://doi.org/10.1021/j100128a003research-articleACS PublicationsRequest reuse permissionsArticle...

We investigate polymer bilayer structures that can be utilized effectively for efficient photovoltaic properties. The transport characteristics of photogenerated free charge carriers across the interface a consisting p-type poly(3-octyl thiophene) (P3OT) or poly(2-methoxy, 5-(2-ethylhexoxy)-1, 4-phenylene vinylene) (MEHPPV) and n-type poly(benzamidazobenzo phenanthroline) (BBL) are studied using photocurrent spectral response, intensity modulated spectra, current-voltage, thermally...

The analysis of a fully integrated optofluidic lab-on-a-chip sensor is presented in this paper. This device comprised collinear input and output waveguides that are separated by microfluidic channel. When light passed through the analyte contained fluidic gap, optical power loss occurs owing to absorption light. Apart from absorption, mode-mismatch between when propagates gap. degree quantum due fluid form basis our analysis. can detect changes refractive index concentration species analyte....

A novel lateral dual-axis a-Si/SiO2 waveguide Bragg grating based quad-beam accelerometer with high-resolution and large linear range has been presented in this paper. The sensor consists of silicon bulk micromachined proof mass suspended by silica beams. Three ridge gratings are positioned on the suspending beam to maximize sensitivity reduce noise. Impact external acceleration sensing direction wavelength MEMS structure modelled including effects strain, stress temperature variation....

The electron-transfer salt 3[Mn(C5Me5)2]:+[DDQ]˙–, isomorphous to orthorhombic [Fe(C5Me5)2]˙+[DDQ]˙–, has been prepared. It exhibits a complex field-dependent magnetic pahse diagram at low temperatures with evidence for ferromagnetic coupling as well moment state below 4 K zero-field cooled samples.

A simulation and analysis of a ring resonator-based sensor are presented. The resonator structure has two bus waveguides rings with gap between the waveguide. radius each is designed to be 3.1 μm. such that both exhibit resonance at 1550 nm, it analyzed mid-infrared wavelengths 1500 1600 nm. guided signal launched through waveguide determine spectral properties, as free range quality (Q-) factor. An improved Q-factor observed in results for optimized design. allows us analyze use sensing...

The linear chain S =1/2 molecular ferromagnet decamethylferrocenium tetracyanoethanide [(DMeFc)(TCNE)] has been studied by frequency-dependent ac susceptibility experiments. χ′(T) and χ″(T) exhibit maxima in the temperature range of 4.8–4.9 K, which corresponds to transition three-dimensional (3D) ferromagnetic ground state. 3D ordering is due presence a finite interchain interaction, as determined earlier dc magnetic specific heat results measurements below Tc are analyzed terms Debye-like...

We propose the application of MEMS capacitive pressure sensor for continuous glucose monitoring in diabetic patients. Two electrically charged parallel plates separated by a suitable dielectric medium, situated inside micro-chamber isolated from external environment felicitous semi-permeable membrane constitute fundamental portion device. Determination concentration is achieved through measurement changes experienced sensor, which result change viscosity test solution as an outcome...

We have systematically introduced spinless defects in the quasi-one-dimensional ferromagnetic system decamethylferrocenium tetracyanoethanide, [${\mathrm{FeCp}}_{2}^{\mathrm{*}}$][TCNE]. The three-dimensional ordering temperature ${\mathit{T}}_{\mathit{c}}$ decreases rapidly with concentration of sites. rate decrease is order exchange spatial anisotropy (i.e., ${\mathit{J}}_{\mathrm{interchain}}$/${\mathit{J}}_{\mathrm{intrachain}}$) parent sysem accordance long-standing theoretical predictions.

In this work, the device is integrated with two bus waveguides and three ring waveguides. The waveguide designed a width of 250nm height 400nm considered. mid infrared wavelength 1550nm considered as an input source for coupling light from to waveguide. between also observed. multimode takes place in configuration. guided mode resonance at four ports are placed inputs outputs Here structure analyzed spectral properties, where quality factor main concern. If has be implemented lab-on-a-chip...

In this paper, the integrated optical Mach-Zehnder Interferometer (IO-MZI) is designed for Biosensing application. A sensor arm with a liquid core waveguide in one of path considered Interferometer. work an Integrated Interferometeric biosensor proposed Rapid diagnostic test (RDT). The design IO-MZI done using COMSOL software.

Sensitivity analysis is an important aspect to be looked into while designing lab-on-a-chip systems. In this paper we will showing with appropriate design that the best sensitivity of fluorescence biosensor achieved for optimal width fluidic gap, corresponding a particular mode spot size. We also affected by efficiency light coupling, which influenced changes in refractive index fluid and higher order modes.

The design, modeling, and analysis of a silicon-on-insulator (SOI) grating coupler integrated with microfluidic channel for lab-on-a-chip applications are presented. was designed to operate at 1310 nm. simulated SOI structure consisted 220 nm top-Si device layer an waveguide, coupler, buried oxide 2 µm. A rectangular deposited on the optical light fluid interaction. fluidic flow through driven by centrifugal Coriolis forces. achieve maximum coupling efficiency optimized injection angle...

Design and analysis of high-sensitivity optical MEMS accelerometer based on waveguide Bragg grating integrated with Crab-leg beam for low frequency applications is presented in this paper. are used to suspend the proof-mass decrease spring stiffness device footprint. A positioned shin crab-leg maximize strain sensitivity. To compensate temperature dependence spectral properties, a reference used. Due excellent linear response, 184 pm/g fundamental frequency, proposed suitable microgravity...