Alexander von Humboldt

Well‐defined graphene nanoarchitectures engineered by patterning the confined surface areas of graphene have a highly attractive potential in various fields of applications, such as molecular electronics and catalysis.1-4 However, such structures requires facile and flexible synthetic methods for the rational design of spatially resolved two‐dimensional (2D) patterning of graphene. In…

New-type noble metal aerogels were developed for outstanding pH-universal electrocatalysis toward hydrogen evolution reaction and oxygen reduction reaction. Credit: Wiley-VCH Electrocatalysis is one of the most studied topics in the field of material science, because it is extensively involved in many important energy-related processes, such as the oxygen reduction reaction…

IMAGE: New-type noble metal aerogels were developed for outstanding pH-universal electrocatalysis toward hydrogen evolution reaction and oxygen reduction reaction. view more  Credit: Wiley-VCH Electrocatalysis is one of the most studied topics in the field of material science, because it is extensively involved in many important energy-related processes, such as the oxygen…

Introduction Chemical industries annually produce millions of tons of short‐chain haloalkanes that are used as solvents and synthetic intermediates.1 Additionally, each year several million tons of methyl halides, predominantly chloromethane, are released into the atmosphere by terrestrial and marine biomass.2 Haloalkanes are toxic and are often employed as pesticides, herbicides,…

We are in the midst of a Cambrian explosion of algorithms. Roughly 540 million years ago, the fossil record tells us that the planet experienced a dramatic diversification of animal life, producing the ancestors of most of the complex organisms that we’re familiar with today. The acceleration of innovation in…

2000 Years of Disbelief: Thomas Jefferson April 6, 2020 James A. Haught By James A. Haught This is the eighth segment of a series on renowned skeptics throughout history. These profiles are drawn from 2000 Years of Disbelief: Famous People With the Courage to Doubt, Prometheus Books, 1996. Popular history…

Researchers suggest that the Humboldt squid uses bioluminescent backlighting for visual cues in the dark deep sea A group of Humboldt squid swim in formation about 200 meters below the surface of Monterey Bay (MBARI) By Hannah Knighton, Ocean Portal smithsonianmag.com April 6, 2020 The deep sea is vast, empty…

Introduction In view of the virtually inexhaustible and ubiquitous sodium resources around the world, sodium‐ion batteries (SIBs) are considered as an attractive alternative to lithium‐ion batteries and have received a great deal of attention in the last ten years.1 Anode and cathode materials, with no doubt, are the crucial factors…

Introduction Aerogels are a large class of self‐supported porous materials with virtually unlimited compositions ranging from silica, polymers, nanocarbons, and semiconductors to metals.1-7 Especially for the recently emerging noble‐metal aerogels (NMAs), their combined features, including self‐supported architectures, high specific surface areas, 3D electron/mass transfer pathways, and numerous optically/catalytically active sites,…

Better LearningTwo schools, one typology, infinite possibilities. For the Lessing Neighborhood School and the Alexander von Humboldt Grammar School, AllesWirdGut and DnD Landschaftsplanung laid out a generous extensive park landscape with free-standing, well-proportioned solitaire buildings. Positioned in a staggered array, the structures are subtly gradated in height and thus align…