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Polarized red and blue light emission from silicon-based nanostructures correlated with crystallographic axes
Energy-selective photoluminescence spectroscopy of porous silicon has been used to study the morphology of porous silicon layers prepared from (110) silicon wafers. We demonstrate that the electric field vector of the red...
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How to facilitate critical action learning

Critical Action Learning (CAL) is a well-established approach to action learning. However, it has not necessarily been clear to action learning practitioners what makes CAL ‘critical’ and what are the implications in...

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The Externalist’s Guide to Fishing for Compliments
Bernhard Salow
Apr 25, 2017
Suppose you’d like to believe that $\textit{p}$ (for example, that you are popular), whether or not it’s true. What can you do to help? A natural initial thought is that you could engage in $\textit{Intentionally Biased...
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Generation Mechanisms of Rotating Stall and Surge in Centrifugal Compressors.
Flow instabilities such as Rotating Stall and Surge limit the operating range of centrifugal compressors at low mass-flow rates. Employing compressible Large Eddy Simulations (LES), their generation mechanisms are exposed....
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Elastic properties of porous silicon studied by acoustic transmission spectroscopy
The porosity dependence of the elastic properties of porous silicon in different crystallographic directions is studied. The velocity of longitudinal acoustic waves in porous silicon layers electrochemically etched in (100)...
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Quasi-periodic Fibonacci and periodic one-dimensional hypersonic phononic crystals of porous silicon

A one-dimensional Fibonacci phononic crystal and a distributed Bragg reflector were constructed from porous silicon. The structures had the same number of layers and similar acoustic impedance mismatch, and were...

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Polarized red and blue light emission from silicon-based nanostructures correlated with crystallographic axes
Energy-selective photoluminescence spectroscopy of porous silicon has been used to study the morphology of porous silicon layers prepared from (110) silicon wafers. We demonstrate that the electric field vector of the red...
Published by:
Transparency and the KK Principle
An important question in epistemology is whether the KK principle is true, i.e., whether an agent who knows that $\textit{p}$ is also thereby in a position to know that she knows that$\textit{p}$. We explain how a “transparency”...
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Phloem differentiation
Plant vasculature consists of two major conductive cell types, xylem tracheary elements and phloem sieve elements (SEs). Both cell types undergo a highly specialized differentiation process. The root meristem of Arabidopsis...
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Women's leadership and the gendered consequences of austerity in the public sector
During times of economic turmoil, women often bear the cost of cuts in public spending and labor market deregulation. We argue that the adverse gendered consequences of austerity are mitigated when women occupy more political...
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How to facilitate critical action learning

Critical Action Learning (CAL) is a well-established approach to action learning. However, it has not necessarily been clear to action learning practitioners what makes CAL ‘critical’ and what are the implications in...

Published by:
Quasi-periodic Fibonacci and periodic one-dimensional hypersonic phononic crystals of porous silicon

A one-dimensional Fibonacci phononic crystal and a distributed Bragg reflector were constructed from porous silicon. The structures had the same number of layers and similar acoustic impedance mismatch, and were...

Published by:
Imaging of morphological changes and phase segregation in doped polymeric semiconductors

The electrical conductivity and morphological characteristics of two conjugated polymers, P3HT and PCPDTBT, p-doped with the strong electron acceptor tetrafluoro-tetracyanoquinodimethane (F4-TCNQ) are studied as a function of...

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Imaging of morphological changes and phase segregation in doped polymeric semiconductors

The electrical conductivity and morphological characteristics of two conjugated polymers, P3HT and PCPDTBT, p-doped with the strong electron acceptor tetrafluoro-tetracyanoquinodimethane (F4-TCNQ) are studied as a function of...

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Elastic properties of porous silicon studied by acoustic transmission spectroscopy
The porosity dependence of the elastic properties of porous silicon in different crystallographic directions is studied. The velocity of longitudinal acoustic waves in porous silicon layers electrochemically etched in (100)...
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