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15 Current news of Peking University
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Imprinted Color Patterns
Azopolymer material allows light-assisted imprinting of nanostructures for structurally colored surfaces
17-Jan-2020
Structural colors appear because the imprinted pattern on a surface changes the wavelengths of light. Chinese scientists have introduced an azopolymer that allows the imprinting of nanopatterns in a novel room-temperature lithographic process. A key aspect of the technique is the light-induced ...
Meter-sized single-crystal graphene growth becomes possible
25-Aug-2017
"Preparation determines the future". Since the discovery of graphene, the synthesis of graphene has long been a hot spot in graphene community. Using transition metals such as Cu or Ni as substrate, scientists have realized the preparation of large-area graphene films. Especially, high-quality ...
Revolutionary discovery leads to invention of new 'building blocks'
University of Akron polymer researchers create a new class of hybrid materials
27-Apr-2015
Polymer science will have to add a new giant molecule to its lexicon thanks to a cutting-edge discovery at The University of Akron. Taking a revolutionary "building blocks" approach, researchers have pioneered a way to create a new class of very large polymer molecules, called macromolecules, ...
Penta-graphene, a new structural variant of carbon, discovered
10-Feb-2015
Researchers at Virginia Commonwealth University and universities in China and Japan have discovered a new structural variant of carbon called "penta-graphene" - a very thin sheet of pure carbon that has a unique structure inspired by a pentagonal pattern of tiles found paving the streets of ...
Fractional quantum Hall effect: Experimental progress and quantum computing applications
12-Jan-2015
The Hall effect, discovered in 1879, is observable when a Hall voltage perpendicular to the current is produced across a conductor under a magnetic field. Although the Hall effect was discovered in a sheet of gold leaf by Edwin Hall, this effect does not require a two-dimensional condition.A ...
Transitions between states of matter: It's more complicated, scientists find
10-Nov-2014
The seemingly simple process of phase changes--those transitions between states of matter--is more complex than previously known, according to research based at Princeton University, Peking University and New York University. Their study, which appears in the journal Science, reveals the need to ...
Knowing whether food has spoiled without even opening the container
19-Mar-2014
A color-coded smart tag could tell consumers whether a carton of milk has turned sour or a can of green beans has spoiled without opening the containers, according to researchers. The tag, which would appear on the packaging, also could be used to determine if medications and other perishable ...
New compounds discovered that are hundreds of times more mutagenic
08-Jan-2014
Researchers at Oregon State University have discovered novel compounds produced by certain types of chemical reactions – such as those found in vehicle exhaust or grilling meat - that are hundreds of times more mutagenic than their parent compounds which are known carcinogens. These compounds ...
Build low-cost nanoscope - using LEGO
27-Sep-2013
The world’s first low cost Atomic Force Microscope (AFM) has been developed in Beijing by a group of PhD students from University College London (UCL), Tsinghua University and Peking University - using LEGO. In the first event of its kind, LEGO2NANO brought together students, experienced makers ...
Human enamel mimic restores tooth whiteness
27-Jun-2013
Research describes a new method for non-abrasive teeth whitening that uses a naturally-occurring mineral contained in a polymer film. Current methods for maintaining a gleaming white smile include replacing the crowns of discoloured teeth or using chemical abrasives such as hydrogen peroxide to ...
