The behavior of active diffusiophoretic suspensions: An accelerated Laplacian dynamics study

Diffusiophoresis is the process by which a colloidal particle moves in response to the concentration gradient of a chemical solute. Chemically active particles generate solute concentration gradients via surface chemical reactions which can result in their own motion — the self-diffusiophoresis of J...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:The Journal of chemical physics 2016-10, Vol.145 (13), p.134902-134902
Hauptverfasser: Yan, Wen, Brady, John F.
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page 134902
container_issue 13
container_start_page 134902
container_title The Journal of chemical physics
container_volume 145
creator Yan, Wen
Brady, John F.
description Diffusiophoresis is the process by which a colloidal particle moves in response to the concentration gradient of a chemical solute. Chemically active particles generate solute concentration gradients via surface chemical reactions which can result in their own motion — the self-diffusiophoresis of Janus particles — and in the motion of other nearby particles — normal down-gradient diffusiophoresis. The long-range nature of the concentration disturbance created by a reactive particle results in strong interactions among particles and can lead to the formation of clusters and even coexisting dense and dilute regions often seen in active matter systems. In this work, we present a general method to determine the many-particle solute concentration field allowing the dynamic simulation of the motion of thousands of reactive particles. With the simulation method, we first clarify and demonstrate the notion of “chemical screening,” whereby the long-ranged interactions become exponentially screened, which is essential for otherwise diffusiophoretic suspensions would be unconditionally unstable. Simulations show that uniformly reactive particles, which do not self-propel, form loosely packed clusters but no coexistence is observed. The simulations also reveal that there is a stability threshold — when the “chemical fuel” concentration is low enough, thermal Brownian motion is able to overcome diffusiophoretic attraction. Janus particles that self-propel show coexistence, but, interestingly, the stability threshold for clustering is not affected by the self-motion.
doi_str_mv 10.1063/1.4963722
format Article
fullrecord <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_crossref_primary_10_1063_1_4963722</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2121631332</sourcerecordid><originalsourceid>FETCH-LOGICAL-c484t-28782780e534aa380cdca3eeb522337e082974eb9781c0ecc281e2c144fd0c193</originalsourceid><addsrcrecordid>eNp90F9r2zAUBXAxVpo020O_wBDspS2405VkS95bKf0Hgb60bwMhy9dEJbE8yQ7k208l6QqD9enC5cfhcAg5BXYJrBI_4FLWlVCcfyJzYLouVFWzz2TOGIeirlg1IycpvTDGQHF5TGZcKc0l6Dn59bRC2uDKbn2INHTUutFvkba-66bkw7AKEUfvaJrSgH3-9Oknveqzc7jGaEds6dIOa-u87Wm76-3Gu0TTOLW7L-Sos-uEXw93QZ5vb56u74vl493D9dWycFLLseA6t1GaYSmktUIz1zorEJuScyEUMs1rJbGplQbH0DmuAbkDKbuWOajFgpztc4cYfk-YRrPxKddb2x7DlAxoUVaqLqHM9Ps_9CVMsc_tDAcOlQAheFbne-ViSCliZ4boNzbuDDDzOrkBc5g822-HxKnZYPtXvm2cwcUeJOdHO-YFP0z7L96G-A7N0HbiD-A8ltg</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2121631332</pqid></control><display><type>article</type><title>The behavior of active diffusiophoretic suspensions: An accelerated Laplacian dynamics study</title><source>AIP Journals Complete</source><source>Alma/SFX Local Collection</source><creator>Yan, Wen ; Brady, John F.</creator><creatorcontrib>Yan, Wen ; Brady, John F.</creatorcontrib><description>Diffusiophoresis is the process by which a colloidal particle moves in response to the concentration gradient of a chemical solute. Chemically active particles generate solute concentration gradients via surface chemical reactions which can result in their own motion — the self-diffusiophoresis of Janus particles — and in the motion of other nearby particles — normal down-gradient diffusiophoresis. The long-range nature of the concentration disturbance created by a reactive particle results in strong interactions among particles and can lead to the formation of clusters and even coexisting dense and dilute regions often seen in active matter systems. In this work, we present a general method to determine the many-particle solute concentration field allowing the dynamic simulation of the motion of thousands of reactive particles. With the simulation method, we first clarify and demonstrate the notion of “chemical screening,” whereby the long-ranged interactions become exponentially screened, which is essential for otherwise diffusiophoretic suspensions would be unconditionally unstable. Simulations show that uniformly reactive particles, which do not self-propel, form loosely packed clusters but no coexistence is observed. The simulations also reveal that there is a stability threshold — when the “chemical fuel” concentration is low enough, thermal Brownian motion is able to overcome diffusiophoretic attraction. Janus particles that self-propel show coexistence, but, interestingly, the stability threshold for clustering is not affected by the self-motion.</description><identifier>ISSN: 0021-9606</identifier><identifier>EISSN: 1089-7690</identifier><identifier>DOI: 10.1063/1.4963722</identifier><identifier>PMID: 27782418</identifier><identifier>CODEN: JCPSA6</identifier><language>eng</language><publisher>United States: American Institute of Physics</publisher><subject>Brownian motion ; Chemical fuels ; Chemical reactions ; Clustering ; Colloiding ; Concentration gradient ; Motion stability ; Nanoparticles ; Organic chemistry ; Simulation ; Strong interactions (field theory)</subject><ispartof>The Journal of chemical physics, 2016-10, Vol.145 (13), p.134902-134902</ispartof><rights>Author(s)</rights><rights>2016 Author(s). Published by AIP Publishing.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c484t-28782780e534aa380cdca3eeb522337e082974eb9781c0ecc281e2c144fd0c193</citedby><cites>FETCH-LOGICAL-c484t-28782780e534aa380cdca3eeb522337e082974eb9781c0ecc281e2c144fd0c193</cites><orcidid>0000-0002-9189-0840</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://pubs.aip.org/jcp/article-lookup/doi/10.1063/1.4963722$$EHTML$$P50$$Gscitation$$H</linktohtml><link.rule.ids>314,776,780,790,4498,27901,27902,76127</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/27782418$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Yan, Wen</creatorcontrib><creatorcontrib>Brady, John F.</creatorcontrib><title>The behavior of active diffusiophoretic suspensions: An accelerated Laplacian dynamics study</title><title>The Journal of chemical physics</title><addtitle>J Chem Phys</addtitle><description>Diffusiophoresis is the process by which a colloidal particle moves in response to the concentration gradient of a chemical solute. Chemically active particles generate solute concentration gradients via surface chemical reactions which can result in their own motion — the self-diffusiophoresis of Janus particles — and in the motion of other nearby particles — normal down-gradient diffusiophoresis. The long-range nature of the concentration disturbance created by a reactive particle results in strong interactions among particles and can lead to the formation of clusters and even coexisting dense and dilute regions often seen in active matter systems. In this work, we present a general method to determine the many-particle solute concentration field allowing the dynamic simulation of the motion of thousands of reactive particles. With the simulation method, we first clarify and demonstrate the notion of “chemical screening,” whereby the long-ranged interactions become exponentially screened, which is essential for otherwise diffusiophoretic suspensions would be unconditionally unstable. Simulations show that uniformly reactive particles, which do not self-propel, form loosely packed clusters but no coexistence is observed. The simulations also reveal that there is a stability threshold — when the “chemical fuel” concentration is low enough, thermal Brownian motion is able to overcome diffusiophoretic attraction. Janus particles that self-propel show coexistence, but, interestingly, the stability threshold for clustering is not affected by the self-motion.</description><subject>Brownian motion</subject><subject>Chemical fuels</subject><subject>Chemical reactions</subject><subject>Clustering</subject><subject>Colloiding</subject><subject>Concentration gradient</subject><subject>Motion stability</subject><subject>Nanoparticles</subject><subject>Organic chemistry</subject><subject>Simulation</subject><subject>Strong interactions (field theory)</subject><issn>0021-9606</issn><issn>1089-7690</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNp90F9r2zAUBXAxVpo020O_wBDspS2405VkS95bKf0Hgb60bwMhy9dEJbE8yQ7k208l6QqD9enC5cfhcAg5BXYJrBI_4FLWlVCcfyJzYLouVFWzz2TOGIeirlg1IycpvTDGQHF5TGZcKc0l6Dn59bRC2uDKbn2INHTUutFvkba-66bkw7AKEUfvaJrSgH3-9Oknveqzc7jGaEds6dIOa-u87Wm76-3Gu0TTOLW7L-Sos-uEXw93QZ5vb56u74vl493D9dWycFLLseA6t1GaYSmktUIz1zorEJuScyEUMs1rJbGplQbH0DmuAbkDKbuWOajFgpztc4cYfk-YRrPxKddb2x7DlAxoUVaqLqHM9Ps_9CVMsc_tDAcOlQAheFbne-ViSCliZ4boNzbuDDDzOrkBc5g822-HxKnZYPtXvm2cwcUeJOdHO-YFP0z7L96G-A7N0HbiD-A8ltg</recordid><startdate>20161007</startdate><enddate>20161007</enddate><creator>Yan, Wen</creator><creator>Brady, John F.</creator><general>American Institute of Physics</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0002-9189-0840</orcidid></search><sort><creationdate>20161007</creationdate><title>The behavior of active diffusiophoretic suspensions: An accelerated Laplacian dynamics study</title><author>Yan, Wen ; Brady, John F.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c484t-28782780e534aa380cdca3eeb522337e082974eb9781c0ecc281e2c144fd0c193</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Brownian motion</topic><topic>Chemical fuels</topic><topic>Chemical reactions</topic><topic>Clustering</topic><topic>Colloiding</topic><topic>Concentration gradient</topic><topic>Motion stability</topic><topic>Nanoparticles</topic><topic>Organic chemistry</topic><topic>Simulation</topic><topic>Strong interactions (field theory)</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yan, Wen</creatorcontrib><creatorcontrib>Brady, John F.</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>MEDLINE - Academic</collection><jtitle>The Journal of chemical physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yan, Wen</au><au>Brady, John F.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The behavior of active diffusiophoretic suspensions: An accelerated Laplacian dynamics study</atitle><jtitle>The Journal of chemical physics</jtitle><addtitle>J Chem Phys</addtitle><date>2016-10-07</date><risdate>2016</risdate><volume>145</volume><issue>13</issue><spage>134902</spage><epage>134902</epage><pages>134902-134902</pages><issn>0021-9606</issn><eissn>1089-7690</eissn><coden>JCPSA6</coden><abstract>Diffusiophoresis is the process by which a colloidal particle moves in response to the concentration gradient of a chemical solute. Chemically active particles generate solute concentration gradients via surface chemical reactions which can result in their own motion — the self-diffusiophoresis of Janus particles — and in the motion of other nearby particles — normal down-gradient diffusiophoresis. The long-range nature of the concentration disturbance created by a reactive particle results in strong interactions among particles and can lead to the formation of clusters and even coexisting dense and dilute regions often seen in active matter systems. In this work, we present a general method to determine the many-particle solute concentration field allowing the dynamic simulation of the motion of thousands of reactive particles. With the simulation method, we first clarify and demonstrate the notion of “chemical screening,” whereby the long-ranged interactions become exponentially screened, which is essential for otherwise diffusiophoretic suspensions would be unconditionally unstable. Simulations show that uniformly reactive particles, which do not self-propel, form loosely packed clusters but no coexistence is observed. The simulations also reveal that there is a stability threshold — when the “chemical fuel” concentration is low enough, thermal Brownian motion is able to overcome diffusiophoretic attraction. Janus particles that self-propel show coexistence, but, interestingly, the stability threshold for clustering is not affected by the self-motion.</abstract><cop>United States</cop><pub>American Institute of Physics</pub><pmid>27782418</pmid><doi>10.1063/1.4963722</doi><tpages>18</tpages><orcidid>https://orcid.org/0000-0002-9189-0840</orcidid><oa>free_for_read</oa></addata></record>
fulltext fulltext
identifier ISSN: 0021-9606
ispartof The Journal of chemical physics, 2016-10, Vol.145 (13), p.134902-134902
issn 0021-9606
1089-7690
language eng
recordid cdi_crossref_primary_10_1063_1_4963722
source AIP Journals Complete; Alma/SFX Local Collection
subjects Brownian motion
Chemical fuels
Chemical reactions
Clustering
Colloiding
Concentration gradient
Motion stability
Nanoparticles
Organic chemistry
Simulation
Strong interactions (field theory)
title The behavior of active diffusiophoretic suspensions: An accelerated Laplacian dynamics study
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-01T22%3A07%3A20IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=The%20behavior%20of%20active%20diffusiophoretic%20suspensions:%20An%20accelerated%20Laplacian%20dynamics%20study&rft.jtitle=The%20Journal%20of%20chemical%20physics&rft.au=Yan,%20Wen&rft.date=2016-10-07&rft.volume=145&rft.issue=13&rft.spage=134902&rft.epage=134902&rft.pages=134902-134902&rft.issn=0021-9606&rft.eissn=1089-7690&rft.coden=JCPSA6&rft_id=info:doi/10.1063/1.4963722&rft_dat=%3Cproquest_cross%3E2121631332%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=2121631332&rft_id=info:pmid/27782418&rfr_iscdi=true