10 documents found, page 1 of 1

Tetrahedrite Nanocomposites for High Performance Thermoelectrics

ABSTRACT: Thermoelectric (TE) materials offer a promising solution to reduce green gas emissions, decrease energy consumption, and improve energy management due to their ability to directly convert heat into electricity and vice versa. Despite their potential, integrating new TE materials into bulk TE devices remains a challenge. To change this paradigm, the preparation of highly efficient tetrahedrite nanocomp...

Dynamics of liquid bridges between patterned surfaces

We have simulated the motion of a single vertical, two-dimensional liquid bridge spanning the gap between two flat, horizontal solid substrates consisting of alternating hydrophilic and hydrophobic stripes, using a multicomponent pseudopotential lattice Boltzmann method. This extends our earlier work where the substrates were uniformly hydrophilic or hydrophobic. In steady-state conditions, we calculate the fol...

Large-scale colloidal synthesis of chalcogenides for thermoelectric applications

A simple and effective preparation of solution-processed chalcogenide thermoelectric materials is described. First, PbTe, PbSe, and SnSe were prepared by gram-scale colloidal synthesis relying on the reaction between metal acetates and diphenyl dichalcogenides in hexadecylamine solvent. The resultant phase-pure chalcogenides consist of highly crystalline and defect-free particles with distinct cubic-, tetrapod-...

Computer simulations of silicide-tetrahedrite thermoelectric generators

With global warming and rising energy demands, it is important now than ever to transit to renewable energy systems. Thermoelectric (TE) devices can present a feasible alternative to generate clean energy from waste heat. However, to become attractive for large-scale applications, such devices must be cheap, efficient, and based on ecofriendly materials. In this study, the potential of novel silicide-tetrahedri...

Dynamics of two-dimensional liquid bridges

We have simulated the motion of a single vertical, two-dimensional liquid bridge spanning the gap between two flat, horizontal solid substrates of given wettabilities, using a multicomponent pseudopotential lattice Boltzmann method. For this simple geometry, the Young-Laplace equation can be solved (quasi-)analytically to yield the equilibrium bridge shape under gravity, which provides a check on the validity o...

Diversity of bacterial communities and genes encoding AMR in different environm...

Aim: The aim of this study was to determine the microbial biodiversity and naturally occurring antibiotic resistance (AR)-encoding genes background load along the food/feed chain in an open-air agricultural testing catchment (HOAL). Methods: Samples were collected in two time points during the year 2020 from various – but interconnected – environmental compartments of the food/feed chain within an HOAL catchmen...

A tectónica da infra-estrutura: construir o espaço público na cidade alargada

Considering the crossroads of "concepts", contradictions and uncertainties that tend to weaken, from the disciplinary point of view, the role of the architect and architecture in the definition of public space and the city, this paper seeks to highlight, from a concrete example - the interventions in public space within the 1st phase the project of the Porto metro - the plausibility and need to design and build...

A tectónica da infra-estrutura: construir o espaço público na cidade alargada

Tendo em conta a encruzilhada de “conceitos”, de contradições e indefinições que tendem a fragilizar do ponto de vista disciplinar, não apenas o saber teórico e prático, mas também o papel do arquitecto e da arquitectura, na definição do espaço público e da cidade, e tendo em conta a maior complexidade e a maior incerteza no que diz respeito aos processos de construção da cidade e do espaço público, este texto ...

In-situ high temperature stress analysis of 'TI'('C','N') coatings on functiona...

Projetar o espaço público na reconstrução da cidade sem plano: o exemplo da req...

A questão ou problema que se pretende abordar neste texto prende-se essencialmente com o reconhecimento da importância do espaço público na (re)construção da cidade contemporânea “sem forma” que, de um modo geral, associamos às periferias urbanas. Procuraremos evidenciar, a partir da análise a um caso concreto - o projeto de requalificação da Área Central do Cacém -, sob que condições o projeto do espaço públic...