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Yang D, Huang R, Zou B, Wang R, Wang Y, Ang EH, Song X. Unraveling nanosprings: morphology control and mechanical characterization. MATERIALS HORIZONS 2024; 11:3500-3527. [PMID: 38864466 DOI: 10.1039/d4mh00503a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2024]
Abstract
Nanosprings demonstrate promising mechanical characteristics, positioning them as pivotal components in a diverse array of potential nanoengineering applications. To unlock the full potential of these nanosprings, ongoing research is concentrated on emulating springs at the nanoscale in terms of both morphology and function. This review underscores recent advancements in the field and provides a comprehensive overview of the diverse methods employed for nanospring preparation. Understanding the general mechanism behind nanospring formation lays the groundwork for the informed design of nanosprings. The synthesis section delineates four prominent methods employed for nanospring fabrication: vapor phase synthesis, templating methods, post-treatment techniques, and molecular engineering. Each method is critically analyzed, highlighting its strengths, limitations, and potential for scalability. Mechanical properties of nanosprings are explored in depth, discussing their response to external stimuli and their potential applications in various fields such as sensing, energy storage, and biomedical engineering. The interplay between nanospring morphology and mechanical behavior is elucidated, providing insights into the design principles for tailored functionality. Additionally, we anticipate that the evolution of state-of-the-art characterization tools, such as in situ transmission electron microscopy, 3D electron tomography, and machine learning, will significantly contribute to both the study of nanospring mechanisms and their applications.
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Affiliation(s)
- Dahai Yang
- School of Materials Science and Engineering, Hefei University of Technology, Anhui Province, 230009, China.
| | - Rui Huang
- School of Materials Science and Engineering, Hefei University of Technology, Anhui Province, 230009, China.
| | - Bolin Zou
- School of Materials Science and Engineering, Hefei University of Technology, Anhui Province, 230009, China.
| | - Ruoxu Wang
- Department of Chemistry, School of Science, Westlake University, 600 Dunyu Road, Hangzhou, Zhejiang Province 310030, China
| | - Yong Wang
- Institute for Energy Research, Jiangsu University, Zhenjiang, Jiangsu 212013, P. R. China
| | - Edison Huixiang Ang
- Natural Sciences and Science Education, National Institute of Education, Nanyang Technological University, Singapore 637616, Singapore.
| | - Xiaohui Song
- School of Materials Science and Engineering, Hefei University of Technology, Anhui Province, 230009, China.
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Hsu E, Lee D, Sloutskin E. Non-Classical Euler Buckling and Brazier Instability in Cylindrical Liquid Droplets. NANO LETTERS 2024; 24:8717-8722. [PMID: 38976791 DOI: 10.1021/acs.nanolett.4c02075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/10/2024]
Abstract
Crystalline monolayers prevalent in nature and technology possess elusive elastic properties with important implications in fundamental physics, biology, and nanotechnology. Leveraging the recently discovered shape transitions of oil-in-water emulsion droplets, upon which these droplets adopt cylindrical shapes and elongate, we investigate the elastic characteristics of the crystalline monolayers covering their interfaces. To unravel the conditions governing Euler buckling and Brazier kink formation in these cylindrical tubular interfacial crystals, we strain the elongating cylindrical droplets within confining microfluidic wells. Our experiments unveil a nonclassical relation between the Young's modulus and the bending modulus of these crystals. Intriguingly, this relation varies with the radius of the cylindrical crystal, presenting a nonclassical mechanism for tuning of elasticity in nanotechnology applications.
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Affiliation(s)
- Emery Hsu
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Daeyeon Lee
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Eli Sloutskin
- Physics Department & Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat Gan 529002, Israel
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3
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Hassannejad R, Alizadeh-Hamidi B. Torsional vibration characteristics of lipid nanocarriers passing through skin layers. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2022.130914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Bi H, Chen Z, Guo L, Zhang Y, Zeng X, Xu L. Fabrication, modification and application of lipid nanotubes. Chem Phys Lipids 2022; 248:105242. [PMID: 36162593 DOI: 10.1016/j.chemphyslip.2022.105242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 09/09/2022] [Accepted: 09/19/2022] [Indexed: 01/25/2023]
Abstract
The potential application of high aspect-ratio nanomaterials motivates the development of the fabrication and modification of lipid nanotubes(LNTs). To date, diverse fabricate processes and elaborate template procedures have produced suitable tubular architectures with definite dimensions and complex structures for expected functions and applications. Herein, we comprehensively summarize the fabrication of LNTs in vitro and discuss the progress made on the micro/nanomaterials fabrication using LNTs as a template, as well as the functions and possible application of a wide range of LNTs as fundamental or derivative material. In addition, the characteristics, advantages, and disadvantages of different fabrication, modification methods, and development prospects of LNTs were briefly summarized.
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Affiliation(s)
- Hongmei Bi
- College of Biological and Food Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China; College of Science, Heilongjiang Bayi Agricultural University, Daqing 163319, China.
| | - Zeqin Chen
- College of Biological and Food Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China
| | - Liuchun Guo
- College of Biological and Food Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China
| | - Yingmei Zhang
- College of Biological and Food Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China
| | - Xinru Zeng
- College of Biological and Food Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China
| | - Liuyi Xu
- College of Biological and Food Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China
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Alizadeh-Hamidi B, Hassannejad R, Omidi Y. Size-dependent thermo-mechanical vibration of lipid supramolecular nano-tubules via nonlocal strain gradient Timoshenko beam theory. Comput Biol Med 2021; 134:104475. [PMID: 34022484 DOI: 10.1016/j.compbiomed.2021.104475] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 05/03/2021] [Accepted: 05/03/2021] [Indexed: 11/20/2022]
Abstract
Nowadays, nanostructured lipid carriers are used as carrier systems to control the release of drug molecules and promote their physicochemical stability. A better understanding of the dynamic behavior of lipid nano-tubules can facilitate a better drug delivery and other relevant applications. The dynamic behaviors of these lipid nano-tubules are susceptible to temperature variations. Hence, a deeper insight into these effects, as mentioned above, is necessary to ensure higher analysis efficiency. However, the models used in previous researches did not take into account these effects. The lipid nano-tubules often possess a small length-to-width ratio and as a result, the use of the Euler-Bernoulli beam theory for modeling them will significantly reduce the accuracy of calculations, in which Timoshenko beam model is used to increase the accuracy of the model. The main objective of the current study is to investigate the bending vibrations of lipid nano-tubules by considering the temperature effects based on nonlocal strain gradient theory. To this end, based on Hamilton's principle, the governing equations of a dynamical system were extracted by taking into account the temperature effects. The equations were solved using the Navier solution method. Moreover, the dimensionless natural frequency and critical temperature of the lipid nano-tubules were calculated. Our findings demonstrate that the critical temperature is a function of the nonlocal parameter and length-scale parameter variations. It is also observed that at a certain interval of the length scale parameter, increasing the value of the nonlocal parameter results in intensification of the hardening behavior of lipid nano-tubules. Based on our findings, the proposed model indicates good accuracy and prediction.
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Affiliation(s)
| | - Reza Hassannejad
- Department of Mechanical Engineering, University of Tabriz, Tabriz, Iran.
| | - Yadollah Omidi
- Department of Pharmaceutical Sciences, College of Pharmacy, Nova Southeastern University, Fort Lauderdale, Florida, 33328, USA
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Shimizu T, Ding W, Kameta N. Soft-Matter Nanotubes: A Platform for Diverse Functions and Applications. Chem Rev 2020; 120:2347-2407. [PMID: 32013405 DOI: 10.1021/acs.chemrev.9b00509] [Citation(s) in RCA: 103] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Self-assembled organic nanotubes made of single or multiple molecular components can be classified into soft-matter nanotubes (SMNTs) by contrast with hard-matter nanotubes, such as carbon and other inorganic nanotubes. To date, diverse self-assembly processes and elaborate template procedures using rationally designed organic molecules have produced suitable tubular architectures with definite dimensions, structural complexity, and hierarchy for expected functions and applications. Herein, we comprehensively discuss every functions and possible applications of a wide range of SMNTs as bulk materials or single components. This Review highlights valuable contributions mainly in the past decade. Fifteen different families of SMNTs are discussed from the viewpoints of chemical, physical, biological, and medical applications, as well as action fields (e.g., interior, wall, exterior, whole structure, and ensemble of nanotubes). Chemical applications of the SMNTs are associated with encapsulating materials and sensors. SMNTs also behave, while sometimes undergoing morphological transformation, as a catalyst, template, liquid crystal, hydro-/organogel, superhydrophobic surface, and micron size engine. Physical functions pertain to ferro-/piezoelectricity and energy migration/storage, leading to the applications to electrodes or supercapacitors, and mechanical reinforcement. Biological functions involve artificial chaperone, transmembrane transport, nanochannels, and channel reactors. Finally, medical functions range over drug delivery, nonviral gene transfer vector, and virus trap.
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Affiliation(s)
- Toshimi Shimizu
- Nanomaterials Research Institute, Department of Materials and Chemistry , National Institute of Advanced Industrial Science and Technology , Tsukuba Central 5, 1-1-1 Higashi , Tsukuba , Ibaraki 305-8565 , Japan
| | - Wuxiao Ding
- Nanomaterials Research Institute, Department of Materials and Chemistry , National Institute of Advanced Industrial Science and Technology , Tsukuba Central 5, 1-1-1 Higashi , Tsukuba , Ibaraki 305-8565 , Japan
| | - Naohiro Kameta
- Nanomaterials Research Institute, Department of Materials and Chemistry , National Institute of Advanced Industrial Science and Technology , Tsukuba Central 5, 1-1-1 Higashi , Tsukuba , Ibaraki 305-8565 , Japan
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Nonlinear vibrations of pre- and post-buckled lipid supramolecular micro/nano-tubules via nonlocal strain gradient elasticity theory. J Biomech 2017; 65:49-60. [DOI: 10.1016/j.jbiomech.2017.09.033] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 09/22/2017] [Accepted: 09/26/2017] [Indexed: 11/18/2022]
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Barclay TG, Constantopoulos K, Matisons J. Nanotubes Self-Assembled from Amphiphilic Molecules via Helical Intermediates. Chem Rev 2014; 114:10217-91. [DOI: 10.1021/cr400085m] [Citation(s) in RCA: 185] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Thomas G. Barclay
- Flinders Centre for Nanoscale Science & Technology, School of Chemical and Physical Sciences, Flinders University, Adelaide, South Australia 5042, Australia
| | - Kristina Constantopoulos
- Flinders Centre for Nanoscale Science & Technology, School of Chemical and Physical Sciences, Flinders University, Adelaide, South Australia 5042, Australia
| | - Janis Matisons
- Flinders Centre for Nanoscale Science & Technology, School of Chemical and Physical Sciences, Flinders University, Adelaide, South Australia 5042, Australia
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Barclay TG, Constantopoulos K, Zhang W, Fujiki M, Petrovsky N, Matisons JG. Chiral self-assembly of designed amphiphiles: influences on aggregate morphology. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:10001-10010. [PMID: 23855821 DOI: 10.1021/la401987y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A series of novel amphiphiles were designed for self-assembly into chiral morphologies, the amphiphiles consisting of a glutamic acid (Glu) headgroup connected through an 11-carbon alkoxy chain to a diphenyldiazenyl (Azo) group and terminated with a variable length alkyl chain (R-Azo-11-Glu, where R denotes the number of carbons in the distal chain). TEM imaging of amphiphile aggregates self-assembled from heated, methanolic, aqueous solution showed that chiral order, expressed as twisted ribbons, helical ribbons, and helically based nanotubes, increased progressively up to a distal chain length containing eight carbons, and then decreased with further increases in distal chain length. TEM and CD showed that the chiral aggregations of single enantiomers were influenced by the molecular chirality of the headgroup. However, the assembly of D,L-10-Azo-11-Glu into nanotubes demonstrated that chiral symmetry breaking effected by the azo group was also relevant to the chiral organization of the amphiphiles. The chiral order of aggregate morphologies was additionally affected by the temperature and solvent composition of assembly in a manner correlated to the mechanism driving assembly; i.e., D,L-10-Azo-11-Glu was sensitive to the temperature of assembly but less so to solvent composition, while L-14-Azo-11-Glu was sensitive to solvent composition and not to temperature. FTIR and UV-vis spectroscopic investigations into the organization of the head and azo groups, in chiral and achiral structures, illustrated that a balance of the influences of the hydrophilic and hydrophobic components on self-assembly was required for the optimization of the chiral organization of the self-assembled structures.
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Affiliation(s)
- Thomas G Barclay
- Flinders Centre for Nanoscale Science & Technology, School of Chemical and Physical Sciences, Flinders University, Adelaide, South Australia, 5042, Australia.
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Boreyko JB, Mruetusatorn P, Sarles SA, Retterer ST, Collier CP. Evaporation-Induced Buckling and Fission of Microscale Droplet Interface Bilayers. J Am Chem Soc 2013; 135:5545-8. [DOI: 10.1021/ja4019435] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Jonathan B. Boreyko
- Center for
Nanophase Materials Sciences and ‡Biological and Nanoscale Systems Group, Oak Ridge National Laboratory, Oak Ridge,
Tennessee 37831, United States
- Department of Biosystems Engineering & Soil Science and ⊥Department of Mechanical, Aerospace, and Biomedical Engineering, The University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Prachya Mruetusatorn
- Center for
Nanophase Materials Sciences and ‡Biological and Nanoscale Systems Group, Oak Ridge National Laboratory, Oak Ridge,
Tennessee 37831, United States
- Department of Biosystems Engineering & Soil Science and ⊥Department of Mechanical, Aerospace, and Biomedical Engineering, The University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Stephen A. Sarles
- Center for
Nanophase Materials Sciences and ‡Biological and Nanoscale Systems Group, Oak Ridge National Laboratory, Oak Ridge,
Tennessee 37831, United States
- Department of Biosystems Engineering & Soil Science and ⊥Department of Mechanical, Aerospace, and Biomedical Engineering, The University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Scott T. Retterer
- Center for
Nanophase Materials Sciences and ‡Biological and Nanoscale Systems Group, Oak Ridge National Laboratory, Oak Ridge,
Tennessee 37831, United States
- Department of Biosystems Engineering & Soil Science and ⊥Department of Mechanical, Aerospace, and Biomedical Engineering, The University of Tennessee, Knoxville, Tennessee 37996, United States
| | - C. Patrick Collier
- Center for
Nanophase Materials Sciences and ‡Biological and Nanoscale Systems Group, Oak Ridge National Laboratory, Oak Ridge,
Tennessee 37831, United States
- Department of Biosystems Engineering & Soil Science and ⊥Department of Mechanical, Aerospace, and Biomedical Engineering, The University of Tennessee, Knoxville, Tennessee 37996, United States
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12
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Shen HS. Nonlinear analysis of lipid tubules by nonlocal beam model. J Theor Biol 2011; 276:50-6. [DOI: 10.1016/j.jtbi.2011.02.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2010] [Revised: 12/08/2010] [Accepted: 02/01/2011] [Indexed: 11/28/2022]
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Zhang X, Mathew M, Gesquiere AJ, Fang J. Fluorescent composite tubes with pH-controlled shapes. ACTA ACUST UNITED AC 2010. [DOI: 10.1039/b927038h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Zhao Y, An L, Fang J. Buckling instability of lipid tubules with multibilayer walls under local radial indentation. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2009; 80:021911. [PMID: 19792155 DOI: 10.1103/physreve.80.021911] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2009] [Indexed: 05/28/2023]
Abstract
The mechanical behavior of self-assembled lipid tubules is an important property which determines their suitability for technological applications. We study the instability of multibilayer lipid tubules (with wall thickness t and external radius R(ext)) beyond elastic response under local radial atomic force microscopy indentations. A discontinuity in force-distance curves associated with the buckling instability of lipid tubules is observed. The critical force at which lipid tubules undergo a buckling transition linearly scales as t/R(ext). In addition, a reduced critical buckling force is found to extend a distance of approximately 1 microm from the end of lipid tubules.
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Affiliation(s)
- Yue Zhao
- Department of Mechanical, Materials, and Aerospace Engineering, Advanced Materials Processing and Analysis Center, University of Central Florida, Orlando, Florida 32816, USA
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Zhao Y, Ge Z, Fang J. Elastic modulus of viral nanotubes. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2008; 78:031914. [PMID: 18851072 DOI: 10.1103/physreve.78.031914] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2008] [Revised: 06/03/2008] [Indexed: 05/26/2023]
Abstract
We report an experimental and theoretical study of the radial elasticity of tobacco mosaic virus (TMV) nanotubes. An atomic force microscope tip is used to apply small radial indentations to deform TMV nanotubes. The initial elastic response of TMV nanotubes can be described by finite-element analysis in 5nm indentation depths and Hertz theory in 1.5nm indentation depths. The derived radial Young's modulus of TMV nanotubes is 0.92+/-0.15GPa from finite-element analysis and 1.0+/-0.2GPa from the Hertz model, which are comparable with the reported axial Young's modulus of 1.1GPa [Falvo, Biophys. J. 72, 1396 (1997)].
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Affiliation(s)
- Yue Zhao
- Advanced Materials Processing and Analysis Center and Department of Mechanical, Materials, and Aerospace Engineering, University of Central Florida, Orlando, FL 32816, USA
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Affiliation(s)
- Yue Zhao
- Advanced Materials Processing and Analysis Center and Department of Mechanical, Materials, and Aerospace Engineering, University of Central Florida, Orlando, Florida 32816
| | - Jiyu Fang
- Advanced Materials Processing and Analysis Center and Department of Mechanical, Materials, and Aerospace Engineering, University of Central Florida, Orlando, Florida 32816
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Zhao Y, Tamhane K, Zhang X, An L, Fang J. Radial elasticity of self-assembled lipid tubules. ACS NANO 2008; 2:1466-1472. [PMID: 19206316 DOI: 10.1021/nn8001517] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Self-assembled lipid tubules with crystalline bilayer walls represent useful supramolecular architectures which hold promise as vehicles for the controlled release of preloaded drugs and templates for the synthesis of one-dimensional inorganic materials. We study the local elasticity of lipid tubules of 1,2-bis(tricosa-10,12-diynoyl)-sn-glycero-3-phosphocholine by radial atomic force microscope indentation, coupled with finite element analysis. A reduced stiffness is found to extend a distance of approximately 600 nm from the ends of lipid tubules. The middle section of lipid tubules is homogeneous in terms of their radial elasticity with a Young's modulus of approximately 703 MPa. The inhomogeneous radial elasticity likely arises from the variation of lipid packing density near the tubule ends.
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Affiliation(s)
- Yue Zhao
- Advanced Materials Processing and Analysis Center and Department of Mechanical, Materials, and Aerospace Engineering, University of Central Florida, Orlando, Florida 32816, USA
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Guo L, Chowdhury P, Fang J, Gai F. Heterogeneous and anomalous diffusion inside lipid tubules. J Phys Chem B 2007; 111:14244-9. [PMID: 18052149 DOI: 10.1021/jp076562n] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Self-assembled lipid tubules with crystalline bilayer walls are promising candidates for controlled drug delivery vehicles on the basis of their ability to release preloaded biological molecules in a sustained manner. While a previous study has shown that the release rate of protein molecules from lipid tubules depends on the associated molecular mass, suggesting that the pertinent diffusion follows the well-known Stokes-Einstein relationship, only a few attempts have been made toward investigating the details of molecular diffusion in the tubule interior. Herein, we have characterized the diffusion rates of several molecules encapsulated in lipid tubules formed by 1,2-bis(10,12-tricosadiynoyl)-sn-glycero-3-phosphocholine (DC8,9PC) using the techniques of fluorescence recovery after photobleaching (FRAP) and fluorescence correlation spectroscopy (FCS). Our results show that the mobility of these molecules depends not only on their positions in the DC8,9PC tubules but also on their respective concentrations. While the former indicates that the interior of the DC8,9PC tubules is heterogeneous in terms of diffusion, the latter further highlights the possibility of engineering specific conditions for achieving sustained release of a "drug molecule" over a targeted period of time. In addition, our FCS results indicate that the molecular diffusions inside the crystalline bilayer walls of the DC8,9PC tubules strongly deviate from the normal, stochastic processes, with features characterizing not only anomalous subdiffusions but also motions that are superdiffusive in nature.
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Affiliation(s)
- Lin Guo
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
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Lee NK, Johner A, Hong SC. Compressing a rigid filament: buckling and cyclization. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2007; 24:229-241. [PMID: 17992470 DOI: 10.1140/epje/i2007-10230-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2007] [Accepted: 10/16/2007] [Indexed: 05/25/2023]
Abstract
We study elastic properties of rigid filaments modeled as stiff chains shorter than their persistence length. By rigid filaments we mean that fluctuations around the optimal filament shape are weak and that low-order expansions (quadratic or quartic) in the deviation from the optimal shape are sufficient to describe them. Our main interest lies in the profiles of force vs. projected filament length, closure probability and weakly buckled states. Results may be relevant to experiments on self-assembled biological (microtubules, actin filaments) and synthetic (organo-gelators) filaments, carbon nanotubes and polymers grafted with strongly repelling side chains, some of which are discussed here.
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Affiliation(s)
- N-K Lee
- Institute of Fundamental Physics, Department of Physics, Sejong University, 143-743, Seoul, South Korea.
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Fang J. Ordered arrays of self-assembled lipid tubules: fabrication and applications. ACTA ACUST UNITED AC 2007. [DOI: 10.1039/b705350a] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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