Experimental investigation of usage of POE lubricants with Al₂O₃, graphene or CNT nanoparticles in a refrigeration compressor

• Kayhan Dağıdır and
• Kemal Bilen

Beilstein J. Nanotechnol. 2023, 14, 1041–1058, doi:10.3762/bjnano.14.86

• interface between particles and the liquid in a solid–liquid suspension, enhancing the interfacial area can result in more effective thermal transport properties. Smaller particle sizes result in higher surface-to-volume ratios, consequently raising the thermal conductivity of the liquid. This is attributed

Thermal transport in kinked nanowires through simulation

• Alexander N. Robillard,
• Graham W. Gibson and
• Ralf Meyer

Beilstein J. Nanotechnol. 2023, 14, 586–602, doi:10.3762/bjnano.14.49

• completely understood. The behaviour of the conductance is examined as kinks of varying angular intensity are included into nanowires. The effects on thermal transport are evaluated through molecular dynamics simulations, phonon Monte Carlo simulations and classical solutions of the Fourier equation. A

• Fourier model. Keywords: ballistic transport; kinked nanowire; molecular dynamics; phonon Monte Carlo; thermal transport; Introduction The thermal conductivity of semiconductor nanostructures is of great interest because of potential applications in a wide variety of fields, such as thermal control

• , communications, and many others [1][2][3][4][5]. In many nanoscale systems, thermal transport cannot be simply described as it would be at larger scales [6]. At such scales, the carriers of energy (such as phonons) have finite transit lengths that are no longer negligible compared to the system dimensions

Comparative molecular dynamics simulations of thermal conductivities of aqueous and hydrocarbon nanofluids

• Adil Loya,
• Antash Najib,
• Fahad Aziz,
• Asif Khan,
• Guogang Ren and
• Kun Luo

Beilstein J. Nanotechnol. 2022, 13, 620–628, doi:10.3762/bjnano.13.54

• dynamic simulations with EAM and the Dreiding force field to investigate different properties of thermal transport of water/CuO nanofluids. They calculated similar thermal conductivity values for water from 303–323 K, as in our case (i.e., 0.59–0.66 W·m−1·K−1, respectively). Then they added CuO

Improvement of the thermoelectric properties of a MoO₃ monolayer through oxygen vacancies

• Wenwen Zheng,
• Wei Cao,
• Ziyu Wang,
• Huixiong Deng,
• Jing Shi and
• Rui Xiong

Beilstein J. Nanotechnol. 2019, 10, 2031–2038, doi:10.3762/bjnano.10.199

• direction is larger than that along the Γ–X direction, which is an indication of anisotropic phonon transport. The thermal conductivity of the lattice, κph, along different directions as a function of temperature is depicted in Figure 1d. It is obvious that the thermal transport properties of the MoO3

3D Nanoprinting via laser-assisted electron beam induced deposition: growth kinetics, enhanced purity, and electrical resistivity

• Brett B. Lewis,
• Robert Winkler,
• Xiahan Sang,
• Pushpa R. Pudasaini,
• Michael G. Stanford,
• Harald Plank,
• Raymond R. Unocic,
• Jason D. Fowlkes and
• Philip D. Rack

Beilstein J. Nanotechnol. 2017, 8, 801–812, doi:10.3762/bjnano.8.83

• heat to a greater extent because they are optically thin, and wider pillars would experience more absorption. However, thermal simulations do not bear this out as larger radius simulations actually have slightly lower peak temperature, due to enhanced thermal transport to the substrate. Still, the

• higher purity and the lower SE yield corresponds to microstructure more closely related to as-deposited morphology. The variation in composition is caused by changes in the temperature profile within the segment as segment length increases: thermal transport to the substrate is limited by the pseudo 1D

Nonlinear thermoelectric effects in high-field superconductor-ferromagnet tunnel junctions

• Stefan Kolenda,
• Peter Machon,
• Detlef Beckmann and
• Wolfgang Belzig

Beilstein J. Nanotechnol. 2016, 7, 1579–1585, doi:10.3762/bjnano.7.152

• also been discussed theoretically for superconductor/quantum dot systems [25][26]. One aim of this paper is to understand the relation of the experimentally observed η(V) to known results of thermal transport in superconductor hybrid structures. We therefore derive here a generalized relation between

Charge and heat transport in soft nanosystems in the presence of time-dependent perturbations

• Alberto Nocera,
• Carmine Antonio Perroni,
• Vincenzo Marigliano Ramaglia and
• Vittorio Cataudella

Beilstein J. Nanotechnol. 2016, 7, 439–464, doi:10.3762/bjnano.7.39

• nanoscopic system, are present. In the absence of temporal perturbations, we have also included the presence of phononic baths, which is important when thermal transport through the nanosystem is addressed. Even if the approach can be applied to multilevel electronic systems with an arbitrary number of

Electron and heat transport in porphyrin-based single-molecule transistors with electro-burnt graphene electrodes

• Hatef Sadeghi,
• Sara Sangtarash and
• Colin J. Lambert

Beilstein J. Nanotechnol. 2015, 6, 1413–1420, doi:10.3762/bjnano.6.146

• Hatef Sadeghi Sara Sangtarash Colin J. Lambert Quantum Technology Centre, Physics Department, Lancaster University, Lancaster, LA1 4YB, UK 10.3762/bjnano.6.146 Abstract We have studied the charge and thermal transport properties of a porphyrin-based single-molecule transistor with electro-burnt

• gating as a result of the reduced screening. Here, we study the charge and thermal transport characteristics through a porphyrin single-molecule transistor with electro-burnt graphene electrodes using the nonequilibrium Green’s function method and density functional theory. First we discuss the

• (solid line) also shows the number of open conduction channels in ideal-oxygen-terminated EBG electrodes. Due to the p-type behaviour of EBG electrodes, the open channels are shifted toward the positive energies. Electron and thermal transport in EBG–PM junction We now consider transport through the

Synthesis and thermoelectric properties of Re₃As_6.6In_0.4 with Ir₃Ge₇ crystal structure

• Valeriy Y. Verchenko,
• Anton S. Vasiliev,
• Alexander A. Tsirlin,
• Vladimir A. Kulbachinskii,
• Vladimir G. Kytin and
• Andrei V. Shevelkov

Beilstein J. Nanotechnol. 2013, 4, 446–452, doi:10.3762/bjnano.4.52

• first Brillouin zone. Physical property measurements For thermal transport measurements, the sample S1 was thoroughly ground and pressed at room temperature into a rectangular pellet of dimensions 8 × 3 × 2 mm3. The density of S1 was estimated from the linear sizes of the pellet to be about 70% of the

Characterization and properties of micro- and nanowires of controlled size, composition, and geometry fabricated by electrodeposition and ion-track technology

• Maria Eugenia Toimil-Molares

Beilstein J. Nanotechnol. 2012, 3, 860–883, doi:10.3762/bjnano.3.97

• defects such as twinning or slips are expected to influence the electrical and thermal transport properties, as well as the mechanical stability of nanowires. 2.2 Gold nanowires Numerous theoretical predictions and experiments have demonstrated that Au nanoparticles and nanowires are promising elements

Current-induced dynamics in carbon atomic contacts

• Jing-Tao Lü,
• Tue Gunst,
• Per Hedegård and
• Mads Brandbyge

Beilstein J. Nanotechnol. 2011, 2, 814–823, doi:10.3762/bjnano.2.90

• show how the current-induced effects could be investigated in molecular contacts connecting gated graphene or nanotube electrodes. Graphene is now being explored very extensively due to its outstanding electrical and thermal transport properties [10][11][12]. Besides being highly important in their own

• thermodynamic equilibrium, ξ is characterized by a temperature and is related to Πr by the fluctuation-dissipation theorem. Note that in general x, F, and ξ are vectors and Πr is a matrix. This method was used by Wang and co-workers [28][29] to describe thermal transport in the quantum limit, with phonons in

• the two connecting reservoirs with different temperature acting as baths and with their quantum fluctuations included in ξ. This reproduced the Landauer result of thermal transport in the harmonic case [28]. It is possible to reach a semiclassical Langevin equation description of the motion of the