Abstract X-ray diffraction (XRD) data acquisition and analysis is among the most time-consuming steps in development cycle of novel thin-film materials. We propose a machine learning-enabled approach to predict crystallographic dimensionality space group from limited number XRD patterns. overcome scarce problem intrinsic materials by coupling supervised learning with model-agnostic, physics-informed augmentation strategy using simulated Inorganic Crystal Structure Database (ICSD)...

Deep neural operators can learn mapping between infinite-dimensional function spaces via deep networks and have become an emerging paradigm of scientific machine learning. However, training usually requires a large amount high-fidelity data, which is often difficult to obtain in real engineering problems. Here we address this challenge by using multifidelity learning, i.e., learning from data sets. We develop operator based on network (DeepONet). A DeepONet includes two standard DeepONets...

In this work we analyze the coupled piezoelectric and semiconductive behavior of vertically aligned ZnO nanowires under uniform compression. The screening effect on field caused by free carriers in compressed zinc oxide (NWs) has been computed means both analytical considerations finite element calculations. We predict that, for typical geometries donor concentrations, length NW does not significantly influence maximum output piezopotential because potential mainly drops across tip, so that...

Abstract The main task of this research was to evaluate canopy temperature and C rop W ater S tress I ndex ( CWSI ) by assessing genotype variability maize performance for different water regimes. To that end, three hundred tropical subtropical hybrids with phenology in terms date anthesis were evaluated. influence on the change temperatures not equal during dates measurement. At end vegetative growth (82 days after sowing, DAS at blister stage 97), a high significant difference P <...

We study heating and heat dissipation of a single C(60) molecule in the junction scanning tunneling microscope by measuring electron current required to thermally decompose fullerene cage. The power for decomposition varies with energy reflects molecular resonance structure. When tip contacts can sustain much larger currents. Transport simulations explain these effects due resonant electron-phonon coupling cooling vibrational decay into upon contact formation.

In this paper, we present a framework for the simulation of electronic devices based on multiscale and multiphysics approach. A formal description is provided that includes both problems which can be linked to already established methods. We set simulations an AlGaN/GaN nanocolumn coupling between atomistic descriptions continuous media models, illustrating application such approach device simulation.

In this paper we discuss various aspects of energy dissipation and heating molecular junctions under bias. First-principles calculations based on density functional nonequilibrium Green's functions are used to compute the power emitted in a molecule due scattering with localized vibrations. context, present perturbation scheme electron-phonon coupling, that is found numerically reliable for computation power, because intrinsically it current conserving. The balance between rate phonons...

Nanostructured materials exhibit low thermal conductivity because of the additional scattering due to phonon-boundary interactions. As these interactions are highly sensitive mean free path (MFP) a given phonon mode, MFP distributions in nanostructures can be dramatically distorted relative bulk. Here we calculate distribution periodic nanoporous Si for different temperatures, using recently developed MFP-dependent Boltzmann Transport Equation. After analyzing contribution each branch...

Tuning thermal transport in nanostructured materials is a powerful approach to develop high-efficiency thermoelectric materials. Using recently developed based on the phonon mean free path dependent Boltzmann equation, we compute effective conductivity of nanoporous with pores various shapes and arrangements. We assess importance pore-pore distance suppressing transport, identify pore arrangement that minimizes conductivity, composed periodic two misaligned rows triangular pores. Such...

We develop a computational framework, based on the Boltzmann transport equation (BTE), with ability to compute thermal in nanostructured materials of any geometry using, as only input, bulk cumulative conductivity. The main advantage our method is twofold. First, while scattering times and dispersion curves are unknown for most materials, phonon mean free path (MFP) distribution can be directly obtained by experiments. As consequence, wider range simulated than frequency-dependent (FD)...

Here we study single-crystalline silicon nanobeams having 470 nm width and 80 thickness cross section, where produce tortuous thermal paths (i.e. labyrinths) by introducing slits to control the impact of unobstructed "line-of-sight" (LOS) between heat source sink. The labyrinths range from straight with a complete LOS along entire length in which ranges partially entirely blocked slits, s = 95, 195, 245, 295 395 nm. measured conductivity samples decreases monotonically ~47 W m-1 K-1 for beam...

In this work we analyze the role played by molecular resonances on thermal behavior of single molecule junction. We consider a fullerene Cu(110) substrate when current is driven across using an scanning tunnel microscope tip. Calculations based density-functional theory and nonequilibrium Green's functions have predicted lowering temperature whenever resonance gets close to injection window. This behavior, due interplay emission absorption phonon processes, can take place (at...

Water stress is one of the main causes yield reductions in crops, especially arid and semi-arid regions where water supply limited. Plant status frequently assessed by pre-dawn leaf potential (ΨPD) or stomata conductance (gL) measurements, support advanced irrigation scheduling. However, both methods are time labour consuming. A non-invasive approach to detection use infrared thermography (IRT). This experiment was conducted a greenhouse on two potted maize varieties under irrigated...

Image processing techniques are increasingly applied in sorting applications of agricultural products. This work has assessed the use image for inspecting surface color two Thai mango cultivars. A computer vision system (CVS) was developed and experiments were conducted to monitor peel change during ripening process. Conversion RGB CIE-LAB values done via prediction models estimate parameters from CVS data. Performance evaluations showed insufficient L (R2 = 0.42-0.58), but better results B...

Silicon nanoladders show that thermally dead volume minimally impacts on the ballistic effects.

Abstract A modular solar cabinet dryer equipped with an air collector including a drying chamber different tray arrangements was developed to determine moisture changes in sizes and forms (slices cubes) of apple carrot pieces carry out serial measurements temperatures, radiation, humidity distributions during the process. The initial final contents (w.b.) fresh products were 88 26% for 71 13% weights 1.56 3 kg, respectively. results revealed that temperature inside strongly negatively...

Pre-drying treatments are frequently employed to preserve fruit quality. The objective of this research was monitor colour changes banana during drying by laser backscattering and determine the influence discolouration on light distribution into tissue. Moreover, examine backscatter, relationship between moisture content relative area slices analyzed with different degrees degradation. experiments were conducted at air temperature 63

We present the simultaneous optical and thermal analysis of a freestanding photonic semiconductor membrane made from wurtzite III-nitride material. By linking microphotoluminescence spectroscopy with Raman thermometry other spectroscopic techniques, we demonstrate how robust value for conductivity $\ensuremath{\kappa}$ can be obtained using only noninvasive means. For this, consider balance different contributions to transport given by, e.g., excitons, charge carriers, heat-carrying phonons....

In this paper, we investigate dissipation in molecular electronic devices. Dissipation is a crucial quantity which determines the stability and heating of junction. Moreover, several experimental techniques use inelastically scattered electrons as probes to geometry junction are becoming fundamental field. order describe such physical effects, non-equilibrium Green's function (NEGF) method was implemented include scattering events between vibrations current simulations. It well known that...