We demonstrate a nonvolatile electrically programmable phase-change silicon photonic switch and phase shifter leveraging a monolayer graphene heater with record-high programming energy efficiency (8.7±1.4 aJ/nm3)...
详细信息
Traumatic brain injury(TBI)is a global cause of morbidity and *** management and risk stratification of patients with TBI is made difficult by the relative insensitivity of screening radiographic studies as well as by...
详细信息
Traumatic brain injury(TBI)is a global cause of morbidity and *** management and risk stratification of patients with TBI is made difficult by the relative insensitivity of screening radiographic studies as well as by the absence of a widely available,noninvasive diagnostic *** particular,a blood-based biomarker assay could provide a quick and minimally invasive process to stratify risk and guide early management strategies in patients with mild TBI(mTBI).Analysis of circulating exosomes allows the potential for rapid and specific identification of tissue *** applying acoustofluidic exosome separation—which uses a combination of microfluidics and acoustics to separate bioparticles based on differences in size and acoustic properties—we successfully isolated exosomes from plasma samples obtained from mice after *** isolation eliminated interference from other blood components,making it possible to detect exosomal biomarkers for TBI via flow *** cytometry analysis indicated that exosomal biomarkers for TBI increase in the first 24 h following head trauma,indicating the potential of using circulating exosomes for the rapid diagnosis of *** levels of TBI biomarkers were only detected in the samples separated via acoustofluidics;no changes were observed in the analysis of the raw plasma *** finding demonstrated the necessity of sample purification prior to exosomal biomarker *** acoustofluidic exosome separation can easily be integrated with downstream analysis methods,it shows great potential for improving early diagnosis and treatment decisions associated with TBI.
Origami structures have been widely explored in robotics due to their many potential advantages. Origami robots can be very compact, as well as cheap and efficient to produce. In particular, they can be constructed in...
详细信息
Light microscopes are the most widely used devices in life and material sciences that allow the study of the interaction of light with matter at a resolution better than that of the naked *** microscopes translate the...
详细信息
Light microscopes are the most widely used devices in life and material sciences that allow the study of the interaction of light with matter at a resolution better than that of the naked *** microscopes translate the spatial differences in the intensity of the reflected or transmitted light from an object to pixel brightness differences in the digital ***,a phase microscope converts the spatial differences in the phase of the light from or through an object to differences in pixel *** microscopy,a phase-based approach,has found application in various *** interferometry has brought nanometric axial resolution,the lateral resolution in quantitative phase microscopy(QPM)has still remained limited by diffraction,similar to other traditional microscopy *** the resolution has been the subject of intense investigation since the invention of the microscope in the 17th *** the past decade,microsphere-assisted microscopy(MAM)has emerged as a simple and effective approach to enhance the resolution in light *** can be integrated with QPM for 3D label-free imaging with enhanced ***,we review the integration of microspheres with coherence scanning interference and digital holographic microscopies,discussing the associated open questions,challenges,and opportunities.
Hypertension is a noncommunicable disease (NCD) that causes global concern, high costs and a high number of deaths. Internet of Things, Ubiquitous Computing, and Cloud Computing enable the development of systems for r...
详细信息
In this paper, we demonstrated a highly sensitive microwave-based resonator sensor capable of detecting variations in an aqueous medium of up to 0.94 mg/dL. In the presented device, the intrinsic resonant response (re...
In this paper, we demonstrated a highly sensitive microwave-based resonator sensor capable of detecting variations in an aqueous medium of up to 0.94 mg/dL. In the presented device, the intrinsic resonant response (resonant amplitude, resonant frequency, and quality factor) is capacitively perturbed in reaction to the sample presence. To achieve higher sensitivity, the sample under testing generally is placed on the resonator surface, where the electric field is highly concentrated at the operating frequency. Thus, demonstrating excellent results in terms of sensitivity and reproducibility.
A new platform for position and polarization aligned 2D single-photon emitter integration within background-free silicon-nitride microring resonator is presented. Emitters achieve a cavity-enhanced coupling efficiency...
详细信息
The effect of medium fluences (from 1019 е/cm2 to 1020 е/cm2) of fast electron irradiation or the change in the praseodymium concentration in the range 0.0 ≤ z ≤ 0.5 on the excess conductivity of optimally oxygen-...
详细信息
Acoustic meta-structures,because of their flexible and unprecedented proprieties,such as negative dynamic density,negative bulk modulus and refractive index of negative,near-zero or extremely large value,enable new ap...
详细信息
Acoustic meta-structures,because of their flexible and unprecedented proprieties,such as negative dynamic density,negative bulk modulus and refractive index of negative,near-zero or extremely large value,enable new applications to manipulate sound waves propagation and control energy transfer[1].Over the past decades,the development of acoustic meta-structures has not only provided advanced functionalities but also tackled the problem of limited device ***,the meta-structures are explored based on two different kinds of unit cells:locally resonant and non-resonant *** acoustic components with the Helmholtz resonator[2],membrane structure[3]or other structured composites were investigated to realize local *** this circumstance,their resonant behaviors are sensitive to the frequency,where the desirable properties can be obtained in the vicinities of the resonant ***,they suffer from the inherent“narrow band”,resulting in large sound attenuation when the frequency is off *** the non-resonant meta-structures,the unit cell with convoluted waveguides such as space-coiling sound channels[4],labyrinthine[5]or tapered structures[6]were proposed to achieve unusual effective properties over a wider ***,the impedance mismatch between the meta-structure and the environmental fluid leads to a large energy reflection and sound attenuation inside the waveguides due to thermo-viscous loss in the narrow sound ***,it is still an open problem in both industry and academia to optimize the broadband performance of the meta-structure devices.
In the development process of polyester powder coating materials, it has great guiding significance for the development of new materials as the polyester material properties can be predicted through the given monomer ...
详细信息
暂无评论