56 Current news about the topic atomic force microscopy
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"AFM technology has the potential to complement conventional biomarker tests and improve the early detection of Alzheimer's"
12-May-2023
During the course of Alzheimer's disease, protein fibrils appear in the spinal fluid of affected individuals. Empa researchers, together with the Department of Neurology at the Cantonal Hospital in St. Gallen, have now visualized the wide spectrum of protein aggregates from oligomers, ...
More insights with AFM
17-Mar-2023
A further development in atomic force microscopy now makes it possible to simultaneously image the height profile of nanometre-fine structures as well as the electric current and the frictional force at solid-liquid interfaces. A team from the Helmholtz-Zentrum Berlin (HZB) and the Fritz Haber ...
Researchers have discovered a previously unknown function of septins in defending cells against dangerous hospital pathogens
24-Oct-2022
Pseudomonas aeruginosa (P.a.) are resistant to most antibiotics and cause life-threatening infections of wounds or the lungs. The P.a. bacteria species has an entire arsenal of strategies for evading the immune system and infecting tissue. Researchers working with Prof. Dr. Winfried Römer and Dr. ...
The most detailed look yet at the surface chemistry and structure of individual cellulose nanocrystal particles
19-Oct-2022
Chemists in Japan, Canada and Europe have uncovered flaws in the surface structure of cellulose nanocrystals—an important step toward deconstructing cellulose to produce renewable nano-materials relevant to biochemical products, energy solutions, and biofuels. The findings—published in Science ...
Pulses from an atom-sharp tip enable researchers to break and form chemical bonds at will
31-Aug-2022
Chemical reactions often produce messy mixtures of different products. Hence, chemists spend a lot of time coaxing their reactions to be more selective to make particular target molecules. Now, an international team of researchers has achieved that kind of selectivity by delivering voltage pulses ...
In-situ electrochemical imaging method with nanoscale spatial resolution combined atomic force microscopy and scanning electrochemical imaging
03-Dec-2021
The involvement between electron transfer (ET) and catalytic reaction at electrocatalyst surface makes electrochemical process challenging to understand and control. How to experimentally determine ET process occurring at nanoscale is important to understand the overall electrochemical reaction ...
“It's an incredible image - being able to actually see a single small molecule on a surface with another one bonded to it is amazing”
06-Oct-2021
The team used a high-resolution atomic force microscope (AFM) operating in a controlled environment at Princeton’s Imaging and Analysis Center. The AFM probe, whose tip ends in a single copper atom, was moved gradually closer to the iron-carbon bond until it was ruptured. The researchers measured ...
Researchers track the first step of the reaction of one single dye pigment with oxygen at unprecedented resolution
26-Jul-2021
Why is it that the colours of a t-shirt fade over time in the sun? Why do you get a sunburn, and why do the leaves of a tree turn brown in the autumn? These questions all have one theme in common, the interplay between dye pigments and ambient oxygen. Every child learns about this chemical ...
Precisely understand and improve chemical properties of surfaces
30-Apr-2021
The acidity of molecules can be easily determined, but until now it was not possible to measure this important property for atoms on a surface. With a new microscopy technique from the Vienna University of Technology (TU Wien), this has now been achieved. The degree of acidity or alkalinity of a ...
19-Mar-2021
Solar cells made of crystalline silicon achieve peak efficiencies, especially in combination with selective contacts made of amorphous silicon (a-Si:H). However, their efficiency is limited by losses in these contact layers. Now, for the first time, a team at Helmholtz-Zentrum Berlin (HZB) and ...
