Globalization, 1870-1914

This paper surveys the causes and consequences of late 19th century globalization, as well as the anti-globalization backlash of that period.

Trade and Empire, 1700-1870

This paper surveys the rise and fall of the European mercantilist system, and the transition to the modern, well-integrated international economy of the 19th century. It also surveys the literature on the links between trade and economic growth during the period, and on the economic effects of empire.trade, empire, history

Trade and Empire, 1700-1870

This paper surveys the rise and fall of the European mercantilist system, and the transition to the modern, well-integrated international economy of the 19th century. It also surveys the literature on the links between trade and economic growth during the period, and on the economic effects of empire.trade, empire, history

Nucleation and Growth of GaN/AlN Quantum Dots

We study the nucleation of GaN islands grown by plasma-assisted molecular-beam epitaxy on AlN(0001) in a Stranski-Krastanov mode. In particular, we assess the variation of their height and density as a function of GaN coverage. We show that the GaN growth passes four stages: initially, the growth is layer-by-layer; subsequently, two-dimensional precursor islands form, which transform into genuine three-dimensional islands. During the latter stage, island height and density increase with GaN coverage until the density saturates. During further GaN growth, the density remains constant and a bimodal height distribution appears. The variation of island height and density as a function of substrate temperature is discussed in the framework of an equilibrium model for Stranski-Krastanov growth.Comment: Submitted to PRB, 10 pages, 15 figure

Trade and Empire, 1700-1870

This paper surveys the rise and fall of the European mercantilist system, and the transition to the modern, well-integrated international economy of the 19th century. It also surveys the literature on the links between trade and economic growth during the period, and on the economic effects of empire

Step by step capping and strain state of GaN/AlN quantum dots studied by grazing incidence diffraction anomalous fine structure

The investigation of small size embedded nanostructures, by a combination of complementary anomalous diffraction techniques, is reported. GaN Quantum Dots (QDs), grown by molecular beam epitaxy in a modified Stranski-Krastanow mode, are studied in terms of strain and local environment, as a function of the AlN cap layer thickness, by means of grazing incidence anomalous diffraction. That is, the X-ray photons energy is tuned across the Ga absorption K-edge which makes diffraction chemically selective. Measurement of \textit{hkl}-scans, close to the AlN (30-30) Bragg reflection, at several energies across the Ga K-edge, allows the extraction of the Ga partial structure factor, from which the in-plane strain of GaN QDs is deduced. From the fixed-Q energy-dependent diffracted intensity spectra, measured for diffraction-selected iso-strain regions corresponding to the average in-plane strain state of the QDs, quantitative information regarding composition and the out-of-plane strain has been obtained. We recover the in-plane and out-of-plane strains in the dots. The comparison to the biaxial elastic strain in a pseudomorphic layer indicates a tendency to an over-strained regime.Comment: submitted to PR

Trade and Empire, 1700-1870

This paper surveys the rise and fall of the European mercantilist system, and the transition to the modern, well-integrated international economy of the 19th century. It also surveys the literature on the links between trade and economic growth during the period, and on the economic effects of empire.