Aircraft icing refers to ice formation and accumulation on the windward surface of aircrafts. It is mainly caused by striking unstable supercooled water droplets suspended in clouds onto a solid surface. poses an increasing threat safety flight due damage aerodynamic shape. This review article provides comprehensive understanding preparation anti-icing applications superhydrophobic coatings applied The first section introduces hazards aircraft underlying mechanisms Although some current...

Abstract Materials decorated by the hierarchical micro‐nanostructures similar to lotus leaf surface topographies are firmly considered possess substantial anti‐icing functions, showing icing‐delay and low ice adhesion. Here, aim of this work is verify capacity in actual icing environment containing supercooled airflow. This study, therefore, develops both routes fabricate micro‐nanostructure single nanostructure superhydrophobic surfaces, first evaluates their based on routine measuring...

Bouncing dynamics of impact droplets on solid surfaces intensively appeal to researchers due the importance in many industrial fields. Here, we found that impacting onto dome convex superhydrophobic could rapidly bounce off with a 28.5% reduction contact time, compared flat surfaces. This is mainly determined by retracting process droplets. Under action convexity, droplet gradually evolves into an annulus shape special hydrodynamic distribution. As consequence, both inner and external rims...

The use of Unmanned Aerial Vehicles (UAVs) has increased significantly in recent years. On-board integrated navigation sensors are a key component UAVs' flight control systems and essential for safety. In order to ensure safety, timely effective sensor fault detection capability is required. this paper, novel data-driven Adaptive Neuron Fuzzy Inference System (ANFIS)-based approach presented the on-board faults UAVs. Contrary classic UAV algorithms, based on predefined or modelled faults,...

The accuracy of location information, mainly provided by the global positioning system (GPS) sensor, is critical for Internet-of-Things applications in smart cities. However, built environments attenuate GPS signals reflecting or blocking them resulting some cases multipath and non-line-of-sight (NLOS) reception. These effects cause range errors that degrade accuracy. Enhancements design antennae receivers deliver a level reduction multipath. NLOS signal reception residual are still to be...

Dynamic water repellency refers to the capacity of droplets rapidly detach from solid surfaces and is usually evaluated by contact time; it has diverse applications, such as anti-icing, proofing, self-cleaning, etc. Although various functional with nonwettability have been designed fabricated provide dynamic a certain extent application potential, underlying physics bouncing dynamics impact still needed be studied for more rational explanation some special phenomena, especially under...

Herein, we report a novel route to fabricate robust anti-icing superhydrophobic surface with hierarchical nanoflake–micropit structure (constructed by combination of lithography processing and chemical etching methods) on an aluminum substrate.

In urban environments, Global Positioning System (GPS) signals are often reflected or blocked by buildings causing multipath effects and Non-Line-Of-Sight (NLOS) reception. These degrade GPS positioning performance. Although improved receiver antenna design can reduce the effect to some extent, NLOS elimination is limited due sensor cost. Measurements based modelling methods have shown promise NLOS, while accuracy correct classification of signal reception types. limitations addressed in...

<h3>Abstract</h3> This paper builds on the machine learning research to propose two new algorithms based optimizing Adaptive Neuro Fuzzy Inference System (ANFIS) with a dual-polarization antenna predict pseudorange errors by considering multiple variables including right-hand circular polarized (RHCP) signal strength, strength difference between left-hand (LHCP) and RHCP outputs, satellites' elevation angle, residuals. The final position is calculated following application of predicted...

Biomimetic surfaces with various extents of liquid adhesion intensely appeal to many researchers due their academic significance and potential industry applications. The present work aims discuss the relationship between bouncing dynamics impact droplets static driven by micro/-nanostructure features. Here, we fabricated three types nanostructure (nanotube, nanomesh, nanowire) superhydrophobic based on TiO2 nanomaterials, all these resultant were endowed robust superhydrophobicity, showed...

Based on Fermi's golden rule and the theory of Boltzmann collision term approximation, hole scattering mechanism in strained Si/(001)Si1-xGex, namely, tetragonal Si is studied, including ionized impurity, acoustic phonon, non-polar optical phonon total rates. It found that rate Si/(001)Si1-xGex decreases obviously with increase stress when Ge fraction (x) less than 0.2 values continue to show a constant tendency. The about 66% at most comparison one unstrained Si. mobility enhancement...

A new type of tunable broadband fiber-optic acousto-optic sensor was experimentally demonstrated by utilizing a bubble-on-fiber (BoF) interferometer. single micro-bubble generated injecting heating laser at λ = 980 nm on the metalized facet an optical fiber. The BoF formed spherical micro-cavity in water whose acoustic deformation precisely detected using narrowband DFB 1550 nm. light and interrogating were fed into fiber probe wavelength division multiplexing (WDM) realizing small footprint...

Abstract The effect of pH at acidic range on the stability hydroxypropyl cellulose (HPC) and casein complexes was studied. Results suggested occurrence clear transparent appearance HPC‐casein 2.5 3. After storage for 3 weeks, maintained excellent stability, as HPC molecules attached onto surfaces micelles through electrostatic interactions with strong positive charges resulted in an interparticle repulsion, thereby preventing aggregation. particle size, zeta potential analysis, turbidity,...

The strain tensor arising from uniaxial stress along an arbitrary direction on the (001) surface of Si is calculated. With these tensor, band structure silicon material under calculated using K ·P perturbation theory coupled with linear deformation potential theory. relation between energy and parameters (type, direction, magnitude) was obtained. Finally, induced change, such as that conduction (CB) valence (VB) edge levels, CB VB splitting bandgap demonstrated. Results can be used a guide...

The increasing number of vehicles in modern cities brings the problem crashes. One applications or services Intelligent Transportation Systems (ITS) conceived to improve safety and reduce congestion is collision avoidance. This critical application requires sub-meter level vehicle state estimation accuracy with very high integrity, continuity availability, detect an impending issue a warning intervene case that not heeded. Because challenging city environment, date there no approved method...

A threshold voltage model is created by analyzing differents distributions of surface electric field and the condition avalanche breakdown, based on structure a novel high speed semiconductor device p-IMOS in this paper. Model verification carried out using 2D simulator ISE. By model, dependences drain-source voltage, Si layer thickness gate length are studied. The results good agreement with experimental ISE simulation results. proposed can also be easily used for reasonable analysis design p-IMOS.