The thermodynamics of gold cluster anions (AuN-, N=11,...,14) is investigated using quantum molecular dynamics. Our simulations suggest that AuN- may exhibit a novel, freestanding planar liquid phase which dynamically coexists with a normal three-dimensional liquid. Upon cooling with experimentally realizable cooling rates, the entropy-favored three-dimensional liquid clusters often supercool a...

We study the liquid anomalies arising from the Stell-Hemmer interaction, using molecular dynamics simulations and approximate 2D solutions. We observe in the liquid phase three types of anomalies: (i) An increase in specific volume upon cooling, (ii) an increase in isothermal compressibility upon cooling, and (iii) an increase in the diffusion coefficient with pressure. We relate the anomalies ...

We present a simple coarse-grained lattice model for monodomain biaxial liquid-crystal elastomers and perform large-scale Monte Carlo simulations in the proposed model system. Orientational ordering--uniaxial or biaxial--reflects in sample deformations on cooling the system. The simulation output is used to predict calorimetry data and deuterium magnetic resonance spectra.

Cooling technology becomes more important because of the increase in heat generation density of semiconductor chips. Boiling and two-phase flow is expected as one of the most effective methods to cool the electronic devices because of its superior heat transfer characteristics. Because the boiling heat transfer depends on the selection of coolant, the development of liquid mixtures and their co...

Evaporative cooling is able to generate the cooling medium at a temperature approaching to the ambient wet bulb temperature. In this paper, a low-energy air conditioning strategy is proposed, which is a combination of cooled ceiling (CC), microencapsulated phase change material (MPCM) slurry storage and evaporative cooling technologies. The assessment of evaporative cooling availability and uti...

4 A prototype Peltier thermoelectric cooling unit has been constructed to cool a cold finger on an 5 electron microprobe. The Peltier unit was tested at 15W and 96W, achieving cold finger 6 temperatures of -10°C and -27°C respectively. The Peltier unit did not adversely affect the analytical 7 stability of the instrument. Heat conduction between the Peltier unit mounted outside the vacuum 8 and...

The automatic test equipment designed at Teradyne requires various cooling systems to prevent the internal circuit boards from overheating. One of the water-based cooling systems includes the use of an intricate manifold. The manifold serves as the base for the mounting of the numerous liquid cooling modules spaced between circuit boards. The efficient circulation of water through this manifold...

Recent theoretical and experimental studies of evaporation have suggested that on average, molecules in the higher-energy tail of the Boltzmann distribution are more readily transferred into the vapor during evaporation. To test these conclusions, the evaporative cooling rates of a droplet train of liquid water injected into vacuum have been studied via Raman thermometry. The resulting cooling ...

Abstract A liquid desiccant cooling system (LDCS) is a promising energy-saving air-conditioning with the advantages of being driven by low-grade heat and excellent humidity control ability. However, problems high energy consumption low utilization efficiency its regenerator limit further development. To improve, novel solar interfacial regeneration (SIR) method proposed. The can convert into lo...

Introduction: We have developed a model to calculate the cooling rate (or burial depth) by using the Fe-Mg chemical zoning profile of olivine, considering diffusional modification of zoning profiles as crystals grow by fractional crystallization from a melt [e.g., 1]. We applied the model to calculating cooling rates of olivines in the Semarkona (LL3.00) chondrite [2]. In this abstract, we appl...