Single molecule techniques comprise a set of experimental methods that detect, manipulate, and analyze individual biomolecules or molecular complexes, circumventing ensemble averaging and revealing heterogeneity in structure, dynamics, and function. Core modalities include single-molecule fluorescence (e.g., smFRET, TIRF microscopy), optical and magnetic tweezers, atomic force microscopy, and nanopore-based sensing. These techniques enable direct measurement of forces, conformational changes, binding/unbinding events, and reaction pathways with nanometer spatial and millisecond (or better) temporal resolution. They are widely applied to study nucleic acid–protein interactions, molecular motors, enzyme kinetics, folding energy landscapes, and mechanotransduction at the level of individual molecules.
Our remarkable ability to perform complex tasks—such as thinking, observing, and touch—stems from proteins, the tiny nanometer-sized molecules in the body. Despite decades of research, our understanding of the structure and ...
Bio & Medicine
Aug 21, 2025
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31
A team of Johns Hopkins engineers has developed a new, more powerful method to observe molecular vibrations, an advance that could have far-reaching implications for early disease detection.
Optics & Photonics
Aug 18, 2025
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147
A new study led by researchers at the University of Cambridge, in collaboration with international institutions, has uncovered a key mechanism in how DNA behaves as it passes through nanoscale pores—a process central to many ...
Bio & Medicine
Aug 14, 2025
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70
A new study shows how the single-molecule organization of receptors in a cellular context determines the function of antibodies, opening up new pathways for the development of cancer immunotherapies.
Bio & Medicine
Aug 11, 2025
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27
Inside living cells, molecules are constantly on the move—binding, diffusing, interacting. An international competition, the 2nd AnDi Challenge, has now delivered a systematic comparison of analytical methods for single-molecule ...
Biotechnology
Jul 23, 2025
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15
A new method turns noise into valuable data to enhance understanding of chemical reactions and material properties with unprecedented detail at the atomic level. The results of this research are now published in Nature.
General Physics
Jul 16, 2025
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240
Imagine you're sitting at a pond, listening to the din of croaking frogs. You want to know how many frogs are in the pond, but you can't pick out the individual croaks—only the combined sound rising and falling in volume ...
Optics & Photonics
Jun 17, 2025
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49
A pioneering partnership between researchers from The Grainger College of Engineering at the University of Illinois Urbana-Champaign has produced a novel nanopore sensing platform for single-biomolecule detection. Their findings, ...
Bio & Medicine
Jun 12, 2025
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81
An international research team has successfully achieved single-molecule spectroscopic observation of hydrogen (H2) and deuterium (D2) confined within a picocavity. The picocavity was formed between a silver nanotip and a ...
Nanophysics
May 21, 2025
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28
Conventional MRI scans, familiar to us from hospitals, have a resolution of about one-tenth of a millimeter, which allows them to image incredibly thin slices of our bodies from head to toe, helping physicians diagnose a ...
Nanophysics
May 19, 2025
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