Download or read book In situ Investigation of Cellular Level Biomarkers Using Atomic Force Microscopy AFM Based Nano Robot written by 薛宇軒 and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Life at the Nanoscale written by Yves Dufrene and published by Pan Stanford Publishing. This book was released on 2011-08-29 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive overview of the use of atomic force microscopy (AFM) and related scanning probe microscopies for cell surface analysis, going from the basics to the applications side. It covers all cell types, going from viruses and protoplasts to bacteria and animal cells and to discuss a range of advanced AFM modalities, including high-resolution imaging, nanoindentation measurements, recognition imaging, and single-molecule and single-cell force spectroscopy. The book covers methodologies for preparing and analyzing cells and membranes of all kinds and highlights recent examples to illustrate the power of AFM techniques in life sciences and nanomedicine.
Download or read book Atomic Force Microscopy for Nanoscale Biophysics written by Mi Li and published by Elsevier. This book was released on 2023-02-15 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atomic Force Microscopy for Nanoscale Biophysics: From Single Molecules to Living Cells summarizes the applications of atomic force microscopy for the investigation of biomolecules and cells. The book discusses the methodology of AFM-based biomedical detection, diverse biological systems, and the combination of AFM with other complementary techniques. These state-of-the-art chapters empower researchers to address biological issues through the application of atomic force microscopy. Atomic force microscopy (AFM) is a unique, multifunctional tool for investigating the structures and properties of living biological systems under aqueous conditions with unprecedented spatiotemporal resolution. Summarizes the recent progress of atomic force microscopy in biomedical applications Presents the methods and skills of applying atomic force microscopy Aids researchers in investigating the nanoscale biophysics of diverse biological systems
Download or read book Atomic Force Microscopy in Nanobiology written by Kunio Takeyasu and published by CRC Press. This book was released on 2016-04-19 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent developments in atomic force microscopy (AFM) have been accomplished through various technical and instrumental innovations, including high-resolution and recognition imaging technology under physiological conditions, fast-scanning AFM, and general methods for cantilever modification and force measurement. All these techniques are now highly
Download or read book Atomic Force Microscopy Investigation of Biological Systems for Health and Energy written by Zubin Huang and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Unlike scanning electron microscopy and transmission electron microscopy, atomic force microscopy (AFM) can examine biological samples in situ without sample fixation. Besides, sample manipulation such as nano-indentation can yield mechanical properties of biological samples. Additional signal channels such as electric signals can be obtained with a functionalized electrochemical probe. AFM can also overcome the optical wavelength limitation of optical microscope to resolve single molecules. In my research, AFM was used to study biological samples ranging from cell colonies, single cells down to single molecules. The recent technique of transducing key transcription factors into unipotent cells (fibroblasts) to generate pluripotent stem cells (induced pluripotent stem cells [iPSCs]) has significantly changed the stem cell field. These cells have great promise for many clinical applications, including that of regenerative medicine. To investigate differences between different cell lines, I looked at cell stiffness as a possible indicator of cell differentiation-potential differences. I used AFM to determine the mechanical properties of cell colonies including fibroblasts, multipotent human adipose-derived stromal cells (hASCs) and pluripotent cells, including gold standard human embryonic stem cells (hESCs), hASC-iPSCs and fibroblasts-iPSCs. From least to most stiff, the order of cell stiffness was as follows: hASC-iPSC, hESC, fibroblast-iPSC, fibroblasts, and hASC. The change in mechanical properties of the cells in response to reprogramming offers insight into how the cell interacts with its environment and might provide clues to efficiently reprogram cell populations and maintain their pluripotent state. To more efficiently use the solar energy harvested by photosynthetic organisms, we evaluated the feasibility of generating bioelectricity by directly extracting electrons from the photosynthetic electron transport chain before they are used to fix CO2 into sugars and polysaccharides. An open micro-fluidic channel system was fabricated to immobilize individual cells (5 to 10 microns in diameter) in an arrayed fashion for AFM manipulated probe access. From a living algal cell, Chlamydomonas reinhardtii, photosynthetic electrons 1.2 pA at 6000 mA/m^2 were directly extracted without a mediator electron carrier by inserting a nano-electrode into the algal chloroplast and applying an overvoltage. This result may represent an initial step in generating "high efficiency" bioelectricity by directly harvesting high energy photosynthetic electrons. Photosystem II (PSII) is a pigment-protein complex that oxidizes water and reduces plastoquinone during photosynthesis. Non-photochemical quenching (NPQ) is a protection mechanism to dissipate excess light energy as heat in high light conditions to prevent the formation of singlet-oxygen, an extremely damaging reactive species. State transition is the major NPQ process in Chlamydomonas. Mobile light harvesting complex (LHCII) antenna will associate with PSII or move away from PSII in state 1 or state 2, respectively. We examined thylakoid membranes purified from cells in different states with AFM to study the supramolecular reorganization of PSII supercomplexes during state transition. This work will help us understand the mechanism of state transition and shed light on how the photosynthetic apparatus acclimates to environmental changes at the supramolecular level.
Download or read book AFM Based Observation and Robotic Nano manipulation written by Shuai Yuan and published by Springer Nature. This book was released on 2020-02-15 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights the latest advances in AFM nano-manipulation research in the field of nanotechnology. There are numerous uncertainties in the AFM nano-manipulation environment, such as thermal drift, tip broadening effect, tip positioning errors and manipulation instability. This book proposes a method for estimating tip morphology using a blind modeling algorithm, which is the basis of the analysis of the influence of thermal drift on AFM scanning images, and also explains how the scanning image of AFM is reconstructed with better accuracy. Further, the book describes how the tip positioning errors caused by thermal drift and system nonlinearity can be corrected using the proposed landmark observation method, and also explores the tip path planning method in a complex environment. Lastly, it presents an AFM-based nano-manipulation platform to illustrate the effectiveness of the proposed method using theoretical research, such as tip positioning and virtual nano-hand.
Download or read book Sensing and Manipulation in a Nano bio Environment Using Atomic Force Microscopy Based Robotic System written by Guangyong Li and published by . This book was released on 2006 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Open Space Microfluidics written by Emmanuel Delamarche and published by John Wiley & Sons. This book was released on 2018-01-18 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: Summarizing the latest trends and the current state of this research field, this up-to-date book discusses in detail techniques to perform localized alterations on surfaces with great flexibility, including microfluidic probes, multifunctional nanopipettes and various surface patterning techniques, such as dip pen nanolithography. These techniques are also put in perspective in terms of applications and how they can be transformative of numerous (bio)chemical processes involving surfaces. The editors are from IBM Zurich, the pioneers and pacesetters in the field at the forefront of research in this new and rapidly expanding area.
Download or read book Nanomechanical Investigation of Soft Biological Cell Adhesion Using Atomic Force Microscopy written by Eleftherious Siamantouras and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book PROPERTIES AND MOLECULAR INTERACTIONS OF TWO DIMENSIONAL NUCLEIC ACID NANOASSEMBLIES written by Shiv Kumar Redhu and published by . This book was released on 2014 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is a need for the development of new technologies for the early detection of disease. Diverse initiatives are underway in academia and the pharmaceutical and biotechnology industries to develop highly-sensitive, high-throughput methods to detect disease-relevant biomarkers at the single-cell level. Biomarkers can define the progress of a disease or efficacy of disease treatment, and can include nucleic acids (RNA, DNA), proteins, small molecules, or even specific cells. While discovery research in this area is accelerating, there are a number of current experimental limitations. Most existing methodologies require a relatively large sample size. Also, amplification-based detection technologies are destructive to sample, and errors in amplification can occur, leading to an incorrect diagnosis. Nanomaterial-based devices (nanodevices) offer the promise of label-free, amplification-free detection strategies. Such nanodevices could allow analysis of minute biological samples without the requirement for amplification or incorporation of reporter groups. Loss of sample, due to handling and processing would be minimized and the sample could be recovered for further analysis. Atomic force microscopy (AFM) allows topographic imaging and compressibility/elasticity measurement of biomolecules on solid supports. AFM can enable assays of ligand binding with single molecule detection capability. Certain nucleic acid types, in particular double-stranded (ds) RNA, can act as a biomarker for specific cancers (e.g. leukemia) and viral infection. dsRNA also is of interest since it is a conserved structural feature of precursors to gene-regulatory RNAs, including micro (mi) RNAs and short interfering (si) RNAs. This project demonstrates a single-step, label-free, amplification-free approach for detecting the interaction of biomolecules that bind and/or process dsRNA, using a nanomanipulated, self-assembled monolayer (SAM) of a ds[RNA-DNA] chimera as imprinting matrix, a reference nuclease as imprinting agent, and AFM for imprint-readout. The action of the dsRNA-specific enzyme, ribonuclease III (RNase III), as well as the binding of an inactive, dsRNA-binding RNase III mutant can be permanently recorded by the input-responsive action of a restriction endonuclease that cleaves an ancillary reporter site within the dsDNA segment. The resulting irreversible height change of the arrayed ds[RNA-DNA] chimera, as measured by atomic force microscopy, provides a distinct digital output for each type of input. These findings provide the basis for developing imprinting-based nano-biosensors, and reveal the versatility of AFM as a tool for characterizing the behaviour of highly-crowded biomolecules at the nanoscale. RNA-DNA heteroduplexes are biomarkers for specific inflammatory conditions of genetic origin, and also are the product of capture of an RNA (e.g., miRNA) by a complementary DNA sequence. The approach used here to detect RNA-DNA hybrids is based on the ability of alkylthiol-modified ssDNA molecules to form monolayers and nanomatrices on gold surfaces (as described above) with density-dependent thickness, which increases upon formation of RNA-DNA hybrids following addition of a complementary oligoribonucleotide. Changes in hybrid matrix thickness can be measured by AFM, using a reference monolayer. RNA-DNA hybrid formation as well as subsequent processing by RNase H can be observed as a height increase or decrease, respectively, of the monolayer. When Mg2+ is omitted to prevent RNA cleavage, but not protein binding, a significant height increase is observed. The height increase is not observed with the corresponding ssDNA or ssRNA nanomatrices, and only occurs with nanomatrices having a hybrid density above a defined threshold. The data indicate formation of a stable multimeric RNase H assembly on the hybrid nanomatrix which provides a robust signal that is nondestructive to the RNA. The implications of these findings are discussed with respect to development of novel detection methodologies for RNA, dsRNA, and RNA-DNA hybrids.
Download or read book Nanotechnology in Space written by Maria Letizia Terranova and published by CRC Press. This book was released on 2021-09-15 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents selected topics on nanotechnological applications in the strategic sector of space. It showcases some current activities and multidisciplinary approaches that have given an unprecedented control of matter at the nanoscale and will enable it to withstand the unique space environment. It focuses on the outstanding topic of dual-use nanotechnologies, illustrating the mutual benefits of key enabling materials that can be used successfully both on earth and in space. It highlights the importance of space as a strategic sector in the global economy, with ever-increasing related businesses worldwide. In this light, it dedicates a chapter to the analysis of current and future markets for space-related nanotechnological products and applications.
Download or read book Noncontact Atomic Force Microscopy written by Seizo Morita and published by Springer. This book was released on 2015-05-18 with total page 539 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the latest developments in noncontact atomic force microscopy. It deals with the following outstanding functions and applications that have been obtained with atomic resolution after the publication of volume 2: (1) Pauli repulsive force imaging of molecular structure, (2) Applications of force spectroscopy and force mapping with atomic resolution, (3) Applications of tuning forks, (4) Applications of atomic/molecular manipulation, (5) Applications of magnetic exchange force microscopy, (6) Applications of atomic and molecular imaging in liquids, (7) Applications of combined AFM/STM with atomic resolution, and (8) New technologies in dynamic force microscopy. These results and technologies are now expanding the capacity of the NC-AFM with imaging functions on an atomic scale toward making them characterization and manipulation tools of individual atoms/molecules and nanostructures, with outstanding capability at the level of molecular, atomic, and subatomic resolution. Since the publication of vol. 2 of the book Noncontact Atomic Force Microscopy in 2009 the noncontact atomic force microscope, which can image even insulators with atomic resolution, has achieved remarkable progress. The NC-AFM is now becoming crucial for nanoscience and nanotechnology.
Download or read book Single Cell Analysis written by Tuhin Subhra Santra and published by MDPI. This book was released on 2021-06-02 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cells are the most fundamental building block of all living organisms. The investigation of any type of disease mechanism and its progression still remains challenging due to cellular heterogeneity characteristics and physiological state of cells in a given population. The bulk measurement of millions of cells together can provide some general information on cells, but it cannot evolve the cellular heterogeneity and molecular dynamics in a certain cell population. Compared to this bulk or the average measurement of a large number of cells together, single-cell analysis can provide detailed information on each cell, which could assist in developing an understanding of the specific biological context of cells, such as tumor progression or issues around stem cells. Single-cell omics can provide valuable information about functional mutation and a copy number of variations of cells. Information from single-cell investigations can help to produce a better understanding of intracellular interactions and environmental responses of cellular organelles, which can be beneficial for therapeutics development and diagnostics purposes. This Special Issue is inviting articles related to single-cell analysis and its advantages, limitations, and future prospects regarding health benefits.
Download or read book NanoBioEngineering written by Bhupinder Singh and published by CRC Press. This book was released on 2018-11-02 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this book is to provide the fundamental comprehension of a broad range of topics in an integrated volume such that readership hailing from diverse disciplines can rapidly acquire the necessary background for applying it in pertinent research and development field.
Download or read book Electrochemical Biosensors written by Serge Cosnier and published by CRC Press. This book was released on 2015-01-26 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since four decades, rapid detection and monitoring in clinical and food diagnostics and in environmental and biodefense have paved the way for the elaboration of electrochemical biosensors. Thanks to their adaptability, ease of use in relatively complex samples, and their portability, electrochemical biosensors now are one of the mainstays of analy
Download or read book Atomic Force Microscopy Based Nanorobotics written by Hui Xie and published by Springer. This book was released on 2011-09-25 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: The atomic force microscope (AFM) has been successfully used to perform nanorobotic manipulation operations on nanoscale entities such as particles, nanotubes, nanowires, nanocrystals, and DNA since 1990s. There have been many progress on modeling, imaging, teleoperated or automated control, human-machine interfacing, instrumentation, and applications of AFM based nanorobotic manipulation systems in literature. This book aims to include all of such state-of-the-art progress in an organized, structured, and detailed manner as a reference book and also potentially a textbook in nanorobotics and any other nanoscale dynamics, systems and controls related research and education. Clearly written and well-organized, this text introduces designs and prototypes of the nanorobotic systems in detail with innovative principles of three-dimensional manipulation force microscopy and parallel imaging/manipulation force microscopy.
Download or read book Structural DNA Nanotechnology written by Nadrian C. Seeman and published by Cambridge University Press. This book was released on 2015 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by the founder of the field, this is a comprehensive and accessible introduction to structural DNA nanotechnology.
