Łukasz Richter

Łukasz Richter
Polish Academy of Sciences | PAN · Institute of Physical Chemistry

PhD

About

17
Publications
2,671
Reads
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328
Citations
Citations since 2016
15 Research Items
326 Citations
2016201720182019202020212022020406080
2016201720182019202020212022020406080
2016201720182019202020212022020406080
2016201720182019202020212022020406080
Introduction
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Publications

Publications (17)
Article
One of the biggest threats for bacteria-based bioreactors in the biotechnology industry is infections caused by bacterial viruses called bacteriophages. More than 70% of companies admitted to encountering this problem. Despite phage infections being such a dangerous and widespread risk, to date, there are no effective methods to avoid them. Here we...
Preprint
Full-text available
Uncontrolled side reactions during lignin fractionation lead to the loss of its chemical functionalities and the uncontrolled formation of unwanted structures. Because of these structural issues, functionalization steps are usually performed on residual active sites of isolated lignin in order to improve reactivity and/or miscibility towards other...
Article
Viral infections caused by bacteriophages, i.e., viruses that kill bacteria are one of the most dangerous and common threats for bacteria-based bioreactors. More than 70% of biotechnology companies have admitted to encountering this problem. Despite phage infections being such a dangerous and widespread risk, there are no effective methods to avoid...
Article
Full-text available
Here we present a method to extract thermodynamic quantities for nanoparticle dispersions in solvents. The method is based on the study of tomograms obtained from cryogenic electron tomography (cryoET). The approach is demonstrated for gold nanoparticles (diameter < 5 nm). Tomograms are reconstructed from tilt-series 2D images. Once the three-dimen...
Article
Full-text available
Hydrophobicity is one of the most critical factors governing the adsorption of molecules and objects, such as virions, on surfaces. Even moderate change of wetting angle of plastic surfaces causes a drastic decrease ranging from 2 to 5 logs of the viruses (e.g., T4 phage) in the suspension due to adsorption on polymer vials' walls. The effect varie...
Article
Full-text available
Bacteria will likely become our most significant enemies of the 21st century, as we are approaching a post-antibiotic era. Bacteriophages, viruses that infect bacteria, allow us to fight infections caused by drug-resistant bacteria and create specific, cheap, and stable sensors for bacteria detection. Here, we summarize the recent developments in t...
Article
Full-text available
Two oppositely charged surfaces separated by a dielectric medium attract each other. In contrast we observe a strong repulsion between two plates of a capacitor that is filled with an aqueous electrolyte upon application of an alternating potential difference between the plates. This long-range force increases with the ratio of diffusion coefficien...
Article
Full-text available
Since the norovirus is the main cause of acute gastroenteritis all over the world, its fast detection is crucial in medical diagnostics. In this work, a rapid, sensitive, and selective optical fiber biosensor for the detection of norovirus virus-like particles (VLPs) is reported. The sensor is based on highly sensitive long-period fiber gratings (L...
Article
The majority of analytical chemistry methods requires presence of target molecules directly at a sensing surface. Diffusion of analyte from the bulk towards the sensing layer is random and might be extremely lengthy, especially in case of low concentration of molecules to be detected. Thus, even the most sensitive transducer and the most selective...
Article
Full-text available
Evolution of bacteria to selective chemical pressure (e.g. antibiotics) is well studied in contrast to the influence of physical stressors. Here we show that instantaneous physical stress in a homogeneous environment (without concentration gradient) induces fast adaptation of Escherichia coli. We exposed E. coli to a large number of collisions of a...
Article
We demonstrate fast and simple route to selective virus detection using antibody-functionalized silver nanowires. While the immunocomplex formation takes place in solution, the presence of viruses is determined by correlating transmission and fluorescence images obtained after depositing nanowire solution on a substrate. Importantly, by mixing nano...
Article
Fast and reliable bacteria detection is crucial for lowering the socioeconomic burden related to bacterial infections (e.g., in healthcare, industry or security). Bacteriophages (i.e., viruses with bacterial hosts) pose advantages such as great specificity, robustness, toughness and cheap preparation, making them popular biorecognition elements in...
Article
Faster and more sensitive environmental monitoring should be developed to face the worldwide problem of bacterial infections. To remedy this issue we demonstrate bacteria sensing element, which utilizes dense and ordered layers of bacteriophages specific for given bacteria strain. We combine 1) chemical modification of the surface to increase the s...
Article
Robust detection of bacteria can significantly reduce risks of nosocomial infections, which are a serious problem even in developed countries (4.1 million cases each year in Europe). Here we demonstrate utilization of novel multifunctional bioconjugates as specific probes for bacteria detection. Bifunctional magnetic-fluorescent microparticles are...
Article
There is a growing interest in nanostructures cooperating with living organisms. However, there are still no general rules for design of biocompatible nanodevices. Here, we present a step towards understanding of interactions between nanostructures and living cells. We study the influence of nanomechanical stress induced by zinc oxide (ZnO) nanostr...
Article
The search for novel building blocks for preparation of nanostructures of unique properties is crucial for development of functional nanomaterials. Polyhedral oligomeric silsesquioxanes (POSS) may be regarded as organic–inorganic nanoparticles of unusual characteristics, i.e., monodisperse size, high temperature resistance, and small dielectric con...
Article
Only in USA the nosocomial infections cause around 100,000 deaths per year. Majority of them could have been avoided if the pathogens would be identified shortly after infection. However, classical approaches are laborious; can take up to even 72 h. Here we demonstrate a step towards a sensor for fast detection of bacteria. The sensor is based on l...

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