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Friebel JM, Ditscherlein R, Ditscherlein L, Peuker UA. Three-Dimensional Characterization of Dry Particle Coating Structures Originating from the Mechano-fusion Process. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2024; 30:179-191. [PMID: 38457218 DOI: 10.1093/mam/ozae009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 01/09/2023] [Accepted: 02/04/2024] [Indexed: 03/09/2024]
Abstract
Dry particle coating processes are of key importance for creating functionalized materials. By a change in surface structure, initiated during coating, a surface property change and thus functionalization can be achieved. This study introduces an innovative approach employing 3D X-ray micro-computed tomography (micro-CT) to characterize coated particles, consisting of spherical alumina particles (d50 = 45.64 μm), called hosts, surrounded by spherical polystyrene particles (d50 = 3.5 μm), called guests. The formed structures, hetero-aggregates, are generated by dry particle coating using mechano-fusion (MF). A deeper understanding of the influence of MF process parameters on the coating structures is a crucial step toward tailoring of coating structure, resulting surface property and functionalization. Therefore, the influence of rotational speed, process time, and total mechanical energy input during MF is explored. Leveraging micro-CT data, acquired of coated particles, enables non-stereologically biased and quantitative coating structure analysis. The guest's coating thickness is analyzed using the maximum inscribed sphere and ray method, two different local thickness measurement approaches. Particle-discrete information of the coating structure are available after a proper image processing workflow is implemented. Coating efficiency and guest's neighboring relations (nearest neighbor distance and number of neighbors inside search radius) are evaluated.
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Affiliation(s)
- Judith M Friebel
- Institute of Mechanical Process Engineering and Mineral Processing, Technische Universität Bergakademie Freiberg, Agricolastraße 1, Freiberg 09599, Germany
| | - Ralf Ditscherlein
- Institute of Mechanical Process Engineering and Mineral Processing, Technische Universität Bergakademie Freiberg, Agricolastraße 1, Freiberg 09599, Germany
| | - Lisa Ditscherlein
- Institute of Mechanical Process Engineering and Mineral Processing, Technische Universität Bergakademie Freiberg, Agricolastraße 1, Freiberg 09599, Germany
| | - Urs A Peuker
- Institute of Mechanical Process Engineering and Mineral Processing, Technische Universität Bergakademie Freiberg, Agricolastraße 1, Freiberg 09599, Germany
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Supply Chain Design for Blending Technologies. SUSTAINABILITY 2022. [DOI: 10.3390/su14148760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
When optimizing blending technologies, the main objective is to determine the right mixing ratio of the raw materials, depending on the different qualities and costs of the raw materials available. It can be concluded that research is mainly focused on answering technological questions, and only very few studies take into account the logistics processes related to blending technologies, their design, cost-efficiency, utilization and sustainability including energy efficiency and environmental impact. Based on this fact, within the frame of this research the authors describe a new approach, extending the basic model of blending problems by adding new supply chain efficiency-related components that makes it possible to take logistics parameters related to the raw materials supply (available stocks, batch sizes, transport and storage costs, supply chain structure) into consideration. A mathematical model of this supply chain optimization problem for blending technologies is described including routing and assignment problems in the supply chain, while technological objectives are also taken into consideration as technological objective functions and constraints. The optimization problem described in the model is a problem with non-deterministic polynomial-time hardness (NP-hard), which means that there are no known efficient analytical methods to solve the logistics-related supply chain optimization of blending technologies. As a solution algorithm, the authors have used an evolutive solver and a new metrics, which improved the efficiency of the comparison of distances between solutions of routing problems represented by permutation arrays. The scenario analysis, which focuses on the integrated optimization of technological and logistics problems validates the model and evaluates the solution algorithm and the new metrics. Using the mentioned algorithm, the supply chain processes of the blending technologies can be improved from availability, efficiency, sustainability point of view.
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Ma X, Li Y, Hussain I, Shen R, Yang G, Zhang K. Core-Shell Structured Nanoenergetic Materials: Preparation and Fundamental Properties. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2001291. [PMID: 32557860 DOI: 10.1002/adma.202001291] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 03/22/2020] [Accepted: 03/30/2020] [Indexed: 06/11/2023]
Abstract
Energetic materials, including explosives, pyrotechnics, and propellants, are widely used in mining, demolition, automobile airbags, fireworks, ordnance, and space technology. Nanoenergetic materials (nEMs) have a high reaction rate and high energy density, which are both adjustable to a large extent. Structural control over nEMs to achieve improved performance and multifunctionality leads to a fascinating research area, namely, nanostructured energetic materials. Among them, core-shell structured nEMs have gained considerable attention due to their improved material properties and combined multiple functionalities. Various nEMs with core-shell structures have been developed through diverse synthesis routes, among which core-shell structured nEMs associated with explosives and metastable intermolecular composites (MICs) are extensively studied due to their good tunability and wide applications, as well as excellent energetic (e.g., enhanced heat release and combustion) and/or mechanical properties. Herein, the preparation methods and fundamental properties of the abovementioned kinds of core-shell structured nEMs are summarized and the reasons behind the satisfactory performance clarified, based on which suggestions regarding possible future research directions are proposed.
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Affiliation(s)
- Xiaoxia Ma
- Department of Mechanical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, 999077, Hong Kong
| | - Yuxiang Li
- Department of Mechanical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, 999077, Hong Kong
| | - Iftikhar Hussain
- Department of Mechanical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, 999077, Hong Kong
| | - Ruiqi Shen
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Guangcheng Yang
- Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang, 621900, China
| | - Kaili Zhang
- Department of Mechanical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, 999077, Hong Kong
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Zheng K, Kunnath K, Ling Z, Chen L, Davé RN. Influence of guest and host particle sizes on dry coating effectiveness: When not to use high mixing intensity. POWDER TECHNOL 2020. [DOI: 10.1016/j.powtec.2020.02.059] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Dahmash EZ, Al-khattawi A, Iyire A, Al-Yami H, Dennison TJ, Mohammed AR. Quality by Design (QbD) based process optimisation to develop functionalised particles with modified release properties using novel dry particle coating technique. PLoS One 2018; 13:e0206651. [PMID: 30383810 PMCID: PMC6211725 DOI: 10.1371/journal.pone.0206651] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Accepted: 10/17/2018] [Indexed: 11/21/2022] Open
Abstract
Quality by Design (QbD), a current trend employed to develop and optimise various critical pharmaceutical processes, is a systematic approach based on the ethos that quality should be designed into the product itself, not just end tested after manufacture. The present work details a step-wise application of QbD principles to optimise process parameters for production of particles with modified functionalities, using dry particle coating technology. Initial risk assessment identified speed, air pressure, processing time and batch size (independent factors) as having high-to-medium impact on the dry coating process. A design of experiments (DOE) using MODDE software employed a D-optimal design to determine the effect of variations in these factors on identified responses (content uniformity, dissolution rate, particle size and intensity of Fourier transform infrared (FTIR) C = O spectrum). Results showed that batch size had the most significant effect on dissolution rate, particle size and FTIR; with an increase in batch size enhancing dissolution rate, decreasing particle size (depicting absence of coated particles) and increasing the FTIR intensity. While content uniformity was affected by various interaction terms, with speed and batch size having the highest negative effect. Optimal design space for producing functionalised particles with optimal properties required maximum air pressure (40psi), low batch size (6g), speed between 850 to 1500 rpm and processing times between 15 to 60 minutes. The validity and predictive ability of the revised model demonstrated reliability for all experiments. Overall, QbD was demonstrated to provide an expedient and cost effective tool for developing and optimising processes in the pharmaceutical industry.
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Affiliation(s)
- Eman Z. Dahmash
- Aston School of Pharmacy, Aston University, Birmingham, United Kingdom
| | - Ali Al-khattawi
- Aston School of Pharmacy, Aston University, Birmingham, United Kingdom
| | - Affiong Iyire
- Aston School of Pharmacy, Aston University, Birmingham, United Kingdom
| | - Hamad Al-Yami
- Aston School of Pharmacy, Aston University, Birmingham, United Kingdom
| | | | - Afzal R. Mohammed
- Aston School of Pharmacy, Aston University, Birmingham, United Kingdom
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Liu W, Fu J, Zhang H, Shao Y, Zhang H, Zhu J. Cold Bonding Method for Metallic Powder Coatings. MATERIALS 2018; 11:ma11112086. [PMID: 30366382 PMCID: PMC6265718 DOI: 10.3390/ma11112086] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 10/19/2018] [Accepted: 10/21/2018] [Indexed: 11/16/2022]
Abstract
An efficient and simple method for preparing bonded metallic powder coating is in high demand in the paint manufacturing and application industries. The bonding purpose is to keep the mass percentage of metallic pigment consistent between the original and recycled coating powder, which aims at solving the problem of recyclability. One possible method capable of realizing this goal is using the binder to cohere metallic pigment with base particles through a cold bonding method. Through this approach, the pre-curing and high-reject-rate problems generally present in thermal bonding can be completely eliminated. In this paper, polyacrylic acid (PAA) and polyvinyl alcohol (PVA) are applied as binders for the bonding process. At various dosages of liquid binder and D.I. water, bonded samples with different bonding effect were prepared. Finally, a good bonding quality with the lowest variance between the mass concentrations of Al flakes in the original powder (before spray) and deposited powder (after spray) 2.94% with PAA as a binder and 0.46% with PVA as a binder was achieved. These results manifest that the cold bonding method is a green and simple approach for preparing the metallic powder coating.
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Affiliation(s)
- Wei Liu
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China.
| | - Jing Fu
- Department of Chemical and Biochemical Engineering, Western University, London, KY N6A 5B9, Canada.
| | - Haiping Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China.
| | - Yuanyuan Shao
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China.
| | - Hui Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China.
- Department of Chemical and Biochemical Engineering, Western University, London, KY N6A 5B9, Canada.
| | - Jesse Zhu
- Department of Chemical and Biochemical Engineering, Western University, London, KY N6A 5B9, Canada.
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The influence of particle interfacial energies and mixing energy on the mixture quality of the dry-coating process. POWDER TECHNOL 2018. [DOI: 10.1016/j.powtec.2018.07.022] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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8
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Characterisation and surface-profiling techniques for composite particles produced by dry powder coating in pharmaceutical drug delivery. Drug Discov Today 2016; 21:550-61. [DOI: 10.1016/j.drudis.2015.11.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Revised: 11/05/2015] [Accepted: 11/25/2015] [Indexed: 11/17/2022]
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Dahmash EZ, Mohammed AR. Functionalised particles using dry powder coating in pharmaceutical drug delivery: promises and challenges. Expert Opin Drug Deliv 2015; 12:1867-79. [PMID: 26289674 DOI: 10.1517/17425247.2015.1071351] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
INTRODUCTION Production of functionalised particles using dry powder coating is a one-step, environmentally friendly process that paves the way for the development of particles with targeted properties and diverse functionalities. AREAS COVERED Applying the first principles in physical science for powders, fine guest particles can be homogeneously dispersed over the surface of larger host particles to develop functionalised particles. Multiple functionalities can be modified including: flowability, dispersibility, fluidisation, homogeneity, content uniformity and dissolution profile. The current publication seeks to understand the fundamental underpinning principles and science governing dry coating process, evaluate key technologies developed to produce functionalised particles along with outlining their advantages, limitations and applications and discusses in detail the resultant functionalities and their applications. EXPERT OPINION Dry particle coating is a promising solvent-free manufacturing technology to produce particles with targeted functionalities. Progress within this area requires the development of continuous processing devices that can overcome challenges encountered with current technologies such as heat generation and particle attrition. Growth within this field requires extensive research to further understand the impact of process design and material properties on resultant functionalities.
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Affiliation(s)
- Eman Z Dahmash
- a Aston School of Pharmacy, Aston University , Birmingham, UK +44 0121 204 4183 ;
| | - Afzal R Mohammed
- a Aston School of Pharmacy, Aston University , Birmingham, UK +44 0121 204 4183 ;
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Krüger K, Wei C, Nuasaen S, Höhne P, Tangboriboonrat P, Tauer K. Heterophase polymerization: pressures, polymers, particles. Colloid Polym Sci 2014. [DOI: 10.1007/s00396-014-3448-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Core–shell particles: Preparation, fundamentals and applications in high performance liquid chromatography. J Chromatogr A 2014; 1357:36-52. [DOI: 10.1016/j.chroma.2014.05.010] [Citation(s) in RCA: 311] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Revised: 05/01/2014] [Accepted: 05/02/2014] [Indexed: 11/23/2022]
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Hayes R, Myers P, Edge T, Zhang H. Monodisperse sphere-on-sphere silica particles for fast HPLC separation of peptides and proteins. Analyst 2014; 139:5674-7. [DOI: 10.1039/c4an01428f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
One-pot synthesis of monodisperse sphere-on-sphere (SOS) silica microspheres is developed for fast separation of peptide and protein mixtures by HPLC.
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Affiliation(s)
- Richard Hayes
- Department of Chemistry
- University of Liverpool
- Liverpool, UK
| | - Peter Myers
- Department of Chemistry
- University of Liverpool
- Liverpool, UK
| | | | - Haifei Zhang
- Department of Chemistry
- University of Liverpool
- Liverpool, UK
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Sato A, Serris E, Grosseau P, Thomas G, Galet L, Chamayou A, Baron M. Experiment and simulation of dry particle coating. Chem Eng Sci 2013. [DOI: 10.1016/j.ces.2012.07.037] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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14
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Zhou Q(T, Morton DA. Drug-lactose binding aspects in adhesive mixtures: controlling performance in dry powder inhaler formulations by altering lactose carrier surfaces. Adv Drug Deliv Rev 2012; 64:275-84. [PMID: 21782866 DOI: 10.1016/j.addr.2011.07.002] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2011] [Revised: 06/24/2011] [Accepted: 07/07/2011] [Indexed: 10/18/2022]
Abstract
For dry powder inhaler formulations, micronized drug powders are commonly mixed with coarse lactose carriers to facilitate powder handling during the manufacturing and powder aerosol delivery during patient use. The performance of such dry powder inhaler formulations strongly depends on the balance of cohesive and adhesive forces experienced by the drug particles under stresses induced in the flow environment during aerosolization. Surface modification with appropriate additives has been proposed as a practical and efficient way to alter the inter-particulate forces, thus potentially controlling the formulation performance, and this strategy has been employed in a number of different ways with varying degrees of success. This paper reviews the main strategies and methodologies published on surface coating of lactose carriers, and considers their effectiveness and impact on the performance of dry powder inhaler formulations.
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16
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17
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Polystyrene/melamine-formaldehyde hollow microsphere composite by self-assembling of latex particles at emulsion droplet interface. POLYMER 2005. [DOI: 10.1016/j.polymer.2005.06.015] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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18
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Deactivated sintering by particle coating: the significance of static and dynamic surface phenomena. Colloids Surf A Physicochem Eng Asp 2004. [DOI: 10.1016/j.colsurfa.2004.01.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Nishida Y, Iso M, Matsuoka M, Partch R. Study of polyimide particle surface modification by the high-speed impact method. ADV POWDER TECHNOL 2004. [DOI: 10.1163/156855204773644463] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Kamata K, Lu Y, Xia Y. Synthesis and characterization of monodispersed core-shell spherical colloids with movable cores. J Am Chem Soc 2003; 125:2384-5. [PMID: 12603113 DOI: 10.1021/ja0292849] [Citation(s) in RCA: 350] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Gold nanoparticles have been conformally coated with amorphous silica (using a sol-gel method) and then an organic polymer (via surface-grafted, atom transfer radical polymerization) to form spherical colloids with a core-double-shell structure. The thickness of silica and polymer shells could be conveniently controlled in the range of tens to several hundred nanometers by changing the concentration of the reagent and/or the reaction time. Selective removal of the silica layer (through etching in aqueous HF) led to the formation of hollow polymer beads containing movable gold cores. This new form of core-shell particles provides a unique system for measuring the feature size and transport property associated with hollow particles. In one demonstration, we showed that the thickness of a closed polymer shell could be obtained by mapping the electrons backscattered from the core and shell. In another demonstration, the plasmon resonance band of the gold cores was used as an optical probe to follow the diffusion kinetics of chemical reagents across the polymer shells.
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Affiliation(s)
- Kaori Kamata
- Department of Chemistry, University of Washington, Seattle, WA 98195, USA
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Pfeffer R, Dave RN, Wei D, Ramlakhan M. Synthesis of engineered particulates with tailored properties using dry particle coating. POWDER TECHNOL 2001. [DOI: 10.1016/s0032-5910(01)00314-x] [Citation(s) in RCA: 268] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Velev OD, Lenhoff AM, Kaler EW. A class of microstructured particles through colloidal crystallization. Science 2000; 287:2240-3. [PMID: 10731141 DOI: 10.1126/science.287.5461.2240] [Citation(s) in RCA: 299] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Microstructured particles were synthesized by growing colloidal crystals in aqueous droplets suspended on fluorinated oil. The droplets template highly ordered and smooth particle assemblies, which diffract light and have remarkable structural stability. The method allows control of particle size and shape from spheres through ellipsoids to toroids by varying the droplet composition. Cocrystallization in colloidal mixtures yields anisotropic particles of organic and inorganic materials that can, for example, be oriented and turned over by magnetic fields. The results open the way to controllable formation of a wide variety of microstructures.
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Affiliation(s)
- OD Velev
- Center for Molecular and Engineering Thermodynamics, Department of Chemical Engineering, University of Delaware, Newark, DE 19716, USA
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Honda F, Honda H, Koishi M, Matsuno T. Double-layered composite particles as a complex stationary phase for high-performance liquid chromatography. J Chromatogr A 1997. [DOI: 10.1016/s0021-9673(97)00226-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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