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Tunable resonant surface plasmons based on graphene nanoribbon are studied to detect nanoscale protein molecules in mid-infrared region. High sensitivity in the detection of the refractive index and the protein chemical vibrations is achieved.
We demonstrate the enhanced performances of perovskite solar cells based on electrosprayed TiO2 nanoporous hemisphere (NHS) arrays. The optimized PCE is 19.3% with a JSC of 23.8mA/cm2, VOC of 1.14V and FF of 0.71.
There is an increase in the number of elderly people living alone, whose children make living in other cities or even other countries. Once they are ill or in an accident, they can only depend on staff of nursing care centers, instead of their children. Therefore, a system which help the elderly to live in their apartment alone is needed. Through the investigation of the elderly living in the community,...
With the development of unmanned aerial vehicles (UAVs) and the relevant techniques, UAVs become common and popular for civilian applications such as remote sensing tasks. The reason is because they are cheap, flexible, and easy to set up. Car park occupancy analysis is important for authorities to make decisions on the design, plan and management of car parks. To have a quick knowledge of current...
Percutaneous therapy is a common clinical operation in minimally invasive surgery. Yet, learning curve of this skillful manual operation is steep, which imposes negative impacts on its further advances. In this paper, we proposed a novel workflow to simulate percutaneous therapy through visuo-haptic rendering based on the clinical trials. Intraoperative puncture data, obtained by our 6DOF force recording...
Based on the unstable walking gait of the straight legs and arc foot model of the biped robot, this paper studies the essential characteristics of gait changes affected by slope angle. When the slope angle changes, the dynamic characteristics of the robot gait from the period doubling bifurcation to the chaos are analyzed, and we will also study the inherent law such as the iterative sequence of the...
Same frequency networking (SFN) technology is widely used in modern wireless network to achieve high area spectrum efficiency. However, it brings the inter-cell interference to the users at the cell edge. Frequency allocation and power control is extensively used to diminish the effect of the interference. Most of the researches are focus on the downlink data transmission due to the fact that the...
With the building of the energy Internet of Things (IoT), the establishment of a private network dedicated to the control and management of the grid to provide reliable and secure power services is attracting more and more attention. Meanwhile, owing to the rapid development of wireless wideband communication technologies, today's wireless communications are increasingly considered by power communication...
Thermal effects of the Tm:YAP crystal and the ZGP crystal that used in 5W Mid-infrared solid-state laser are the important factor which affects the laser output characteristic and the reliability. Starting with the thermal conduction function, Tm:YAP and ZGP crystals thermal effects simulation models are build by using finite element simulation technology, the numerical value of the highest temperature...
A method of fabricating silicon microsphere resonators feathered high quality factor whispering gallery modes of ∼ 0.8 × 106 is demonstrated. We fabricate the silicon microspheres from silica-cladding/silicon-core fiber based on the CO2 laser induced in-fiber capillary instability phenomenon.
We utilize tunable graphene plasmons to study nanometric-size molecular refractive index and vibrational modes sensing by a graphene integrated silicon grating. The great electric field enhancement and wide tunability of the localized graphene plasmons enable the proposed device accurate label-free identification of the molecular refractive index and the mid-infrared vibrational modes by detecting...
A simulation design was presented to optimise the model of long period grating based fibre devices. The simulation used a modified phase matching condition to better estimate the resonance wavelengths in the transmission profile. Experiments were conducted to verify the results obtained in the simulation. The experimental results matched closely with the simulations.
Programs that take highly-structured files as inputs normally process inputs in stages: syntax parsing, semantic checking, and application execution. Deep bugs are often hidden in the application execution stage, and it is non-trivial to automatically generate test inputs to trigger them. Mutation-based fuzzing generates test inputs by modifying well-formed seed inputs randomly or heuristically. Most...
We demonstrate a cylindrically symmetric radial laser emission from a CdSe/CdS/ZnS quantum dots doped hexane plug in an omnidirectional photonic-bandgap fiber cavity. The lasing threshold, polarization dependence and quality factor of lasing mode are characterized.
We design a high-birefringent microstructured optical fiber for surface plasmon resonance sensor. Our proposed sensor provides birefringence as large as 4.2×10−4, which effectively reduces the measurement offset induced by polarization crosstalk.
We demonstrate an all-in-fiber optofluidic refractive index sensor based on a long-period grating in a side-channel photonic crystal fiber. We achieve fast liquid circulation and a sensitivity of ∼1042 nm/RIU over the range of 1.33∼1.36.
We experimentally demonstrate a side-polished optical fiber based graphene-on-gold biosensor. Single layer of graphene is deposited to improve the sensitivity in single-stranded DNA detection. Our proposed biosensor provides a detection limit lower than 1 pM.
We demonstrate an in-fiber microsphere fabrication method with great precision and controllability based on laser-induced thermal effect. The smallest amplification ratio of 3.88 between the microsphere and the fiber core is achieved experimentally.
To satisfy the QoS requirements and improve the reliability of the network, we propose a load-balancing-based fault-tolerant mapping method (LFMM) in smart grid virtual networks. The process of LFMM is divided into two stages, one is node mapping stage, and the other is link mapping stage. During node mapping stage, we present a load-balancing-based virtual node mapping (LVNM) algorithm. We choose...
Percutaneous nephrolithotomy is one of the most effective and invasive surgeries in renal calculi therapies. Traditional puncture training simulation is conducted by animals' organs or bench models which does not represent neither visual nor tactile clues through the actual procedure. In addition, the accuracy of the training results is also debatable due to the artificial setup. In this paper, we...
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