Name: plasmonic trapping and release of nanoparticles in a monitoring environment
Uploaded: 2017-04-04T11:00:00
Description: Watch this Scientific Journal Video about Plasmonic Trapping and Release of Nanoparticles in a Monitoring Environment at JoVE.com

Dette arbejde blev støttet af IKT-FoU-program for MSIP / IITP (R0190-15-2040, Udvikling af et indhold configuration management-system og en simulator for 3D-print ved hjælp smarte materialer).

Advarsel: Der henvises til alle relevante materiale sikkerhedsregler før brug. Flere af de kemikalier, der anvendes i mikrochip fabrikation er akut toksiske og kræftfremkaldende. Brug venligst alle passende sikkerhedsforanstaltninger, når du udfører de fotolitografiske og ætsning processer, herunder anvendelse af tekniske kontroller (stinkskab, varmeplade, og Aligner) og personlige værnemidler (sikkerhedsbriller, handsker, kittel, fuld længde bukser, og lukket -toe sko). 1. Fremstilling...

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SMF kablet blev indsat i SMF kabelhullet på mikrochippen, som vist i den rektangulære prik af figur 6a. Fordi SMF kabelhullet er større end kablets diameter, blev epoxy lim, der anvendes til at tætne mellemrummet for at blokere lækage af den strømmende partikel opløsning. Før anvendelse af epoxylim, bør guldet blok og kabel kant være koaksialt i hånden med et mikroskop. Selv om det er ideelt for det indsatte kabel kant og den nanohole skal koaksialt, kan en lille forskydning tolereres, fordi ...

Evnen til at manipulere mikroskala objekter er en uundværlig funktion for mange mikro / nano eksperimenter. Direkte kontakt manipulationer kan beskadige de manipulerede objekter. Frigivelse de tidligere afholdt objekter er også udfordrende på grund af stiction problemer. For at overvinde disse problemer, flere indirekte metoder under anvendelse af strømningstekniske 1, elektrisk 2, magnetisk 3 eller fotoniske kræfter 4, 5, 6, 7, 8 er blevet foreslået. Plasmoniske pincet, der bruger fotoniske kræfter er baseret på fysik af ekstraordinære felt ekstraudstyr flere ordrer større end hændelsen intensitet 9. Denne ekstremt stærkt felt enhancement muliggør indfangning af ekstremt små nanopartikler. For eksempel har det vist sig at immobilisere og manipulere nanoskalaobjekter, såsom polystyrenpartikler 7, 10, 11, 12, 13, 14, polymerkæder 15, proteiner 16, quantum dots 17, og DNA-molekyler 8, 18. Uden plasmoniske pincet, er det vanskeligt at fælde nanopartikler, fordi de hurtigt forsvinder, før de reelt undersøges, eller fordi de er beskadiget på grund af den høje intensitet af laseren. Mange plasmoniske undersøgelser har anvendt forskellige nanoskala guld strukturer. Vi kan kategorisere guldstrukturer som udragende nanodisk typer 12, 13, 14, 15, 19 <sop&gt;, 20, 21 eller undertrykte nanohole typer 7, 8, 10, 11, 22, 23. I form af billeddannelse skyld de nanodisk typer er mere egnede end de nanohole typer fordi, for sidstnævnte, kan guld substrater hindre observation visning. Desuden plasmoniske diffusering sker nær den plasmoniske struktur og gør observation endnu mere udfordrende. Så vidt vi ved, var plasmoniske fældefangst på nanohole typer kun kontrolleres ved hjælp af indirekte spredningssignaler. Dog er der blevet rapporteret nogen succesrige direkte observationer, såsom mikroskopiske billeder. Få undersøgelser beskrevet stilling fanget partikler. Et sådant resultat blev præsenteret af Wang et al. De skabte en guld søjle på en guld substrat og observerede partiklen bevægelse under anvendelse af et fluorescensmikroskop 24. Dette er imidlertid kun effektiv til overvågning sidebevægelser ikke i retningen parallelt med bjælken akse. I dette papir, vi indfører nye fluide mikrochip design og fabrikation procedurer. Under anvendelse af denne chip viser vi overvågningen af ​​plasmonically fanget partikler, både i retninger parallelle og vinkelret på den plasmoniske nanostruktur. Desuden måler vi den maksimale kraft af den immobiliserede partikel ved at øge væskens hastighed for at finde den deponering hastighed i mikrochip. Denne undersøgelse er unik, fordi de fleste undersøgelser af plasmoniske pincet ikke kvantitativt kan vise den maksimale fældefangst kræfter, der anvendes i deres forsøgsopstillinger.

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		<tr>
			<td>Negative photoresist&#160;</td>
			<td>MicroChem</td>
			<td>SU-8 2075</td>
		</tr>
		<tr>
			<td>Developer</td>
			<td>MicroChem</td>
			<td>SU-8 Developer</td>
		</tr>
		<tr>
			<td>Positive photoresist&#160;</td>
			<td>Merck Ltd.</td>
			<td>AZ GXR-601</td>
		</tr>
		<tr>
			<td>AZ Photoresist Developers</td>
			<td>Merck Ltd.</td>
			<td>AZ 300 MIF</td>
		</tr>
		<tr>
			<td>HMDS</td>
			<td>Merck Ltd.</td>
			<td>AZ Adhesion Promoter</td>
		</tr>
		<tr>
			<td>Aligner</td>
			<td>Midas System</td>
			<td>MDA 400M</td>
		</tr>
		<tr>
			<td>Atmospheric plasma machine&#160;</td>
			<td>Atmospheric Process 
			Plasma Co.</td>
			<td>IDP-1000</td>
		</tr>
		<tr>
			<td>Polydimethylsiloxane (PDMS)</td>
			<td>Dow Corning</td>
			<td>Sylgard 184 A/B</td>
		</tr>
		<tr>
			<td>Gold coated test slides</td>
			<td>EMF Co.</td>
			<td>TA124(Ti/Au)</td>
		</tr>
		<tr>
			<td>Au etchant&#160;</td>
			<td>Transene Inc.</td>
			<td>TFA</td>
		</tr>
		<tr>
			<td>Ti etchant&#160;</td>
			<td>Transene Inc.</td>
			<td>TFT</td>
		</tr>
		<tr>
			<td>40X objective lens&#160;</td>
			<td>Edmund Optics</td>
			<td>40X DIN</td>
		</tr>
		<tr>
			<td>60X water immersion 
			objective lens&#160;</td>
			<td>Olympus</td>
			<td>LUMPLFLN 60XW</td>
		</tr>
		<tr>
			<td>Optical fiber incident laser&#160;</td>
			<td>IPG Photonic</td>
			<td>YLR 10</td>
		</tr>
		<tr>
			<td>SMF coupler</td>
			<td>Thorlabs</td>
			<td>MBT612D/M</td>
		</tr>
		<tr>
			<td>Syringe micropump</td>
			<td>Harvard</td>
			<td>PC2 70-4501</td>
		</tr>
		<tr>
			<td>Fluorescent microscope&#160;</td>
			<td>Olympus</td>
			<td>IX-51</td>
		</tr>
		<tr>
			<td>Plasma system</td>
			<td>Femto Science Inc</td>
			<td>CUTE-MPR</td>
		</tr>
	</tbody>
</table>

plasmonic trapping and release of nanoparticles in a monitoring environment

Plasmoniske pincet anvender overfladeplasmonresonans polaritoner at begrænse polariserbare nanoskala objekter. Blandt de forskellige designs af plasmoniske pincet, kan kun få observere immobiliserede partikler. Desuden har et begrænset antal undersøgelser eksperimentelt målte exertable kræfter på partiklerne. De designs kan klassificeres som den udragende nanodisk typen eller undertrykt nanohole type. For sidstnævntes vedkommende mikroskopisk observation er ekstremt udfordrende. I dette papir, er en ny plasmoniske pincet indført til overvågning partikler, både i retninger parallelle og vinkelret på den symmetriske akse i en plasmoniske nanohole struktur. Denne funktion gør det muligt at observere bevægelsen af ​​hver partikel nær randen af ​​nanohole. Desuden kan vi kvantitativt estimere den maksimale fældefangst kræfter ved hjælp af en ny fluidisk kanal.

Fremstillingsproces PDMS mikrokanal og nanohole guld plade er vist i figur 1 og 2. Fremgangsmåden til at kombinere de to dele og den faktiske mikrochip er vist i figur 3. PDMS blev skåret for at vise indersiden af ​​kanalen fra den side af mikrochip. Det var dog svært at observere partikler, der strømmer i kanalen på grund af overfladeruhed skæreplanet. Derfor introducerede vi PDMS coating metode til at løse dette problem, som...

Watch this Scientific Journal Video about Plasmonic Trapping and Release of Nanoparticles in a Monitoring Environment at JoVE.com

Plasmonic Trapping and Release of Nanoparticles in a Monitoring Environment

En mikrochip fabrikationsproces, der inkorporerer plasmoniske pincet præsenteres her. Mikrochippen muliggør billeddannelse af en fanget partikel at måle maksimale fældefangst kræfter.

Plasmoniske fældefangst og frigivelse af nanopartikler i en Monitoring Miljø

Plasmonic tweezers use surface plasmon polaritons to confine polarizable nanoscale objects. Among the various designs of plasmonic tweezers, only a few ...

Research

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Engineering

Polycrystalline Silicon Thin-film Solar cells with Plasmonic-enhanced Light-trapping

Polykrystallinske silicium tynd-film solceller med plasmoniske-enhanced Light-trapping

One of major approaches to cheaper solar cells is reducing the amount of semiconductor material used for their fabrication and making cells thinner. To ...

Optical Trapping of Nanoparticles

Optisk diffusering af nanopartikler

Optical trapping is a technique for immobilizing and manipulating small objects in a gentle way using light, and it has been widely applied in trapping ...

Construction of a High Resolution Microscope with Conventional and Holographic Optical Trapping Capabilities

Opførelse af en høj opløsning Mikroskop med konventionelle og Holografisk Optiske fældefangst Capabilities

High resolution microscope systems with optical traps allow for precise manipulation of various refractive objects, such as dielectric beads 1 or cellular ...

Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters

Design, fremstilling, and Experimental karakterisering af plasmoniske Photoconductive Terahertz Emitters

In this video article we present a detailed demonstration of a highly efficient method for generating terahertz waves. Our technique is based on ...

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires

Evaluering plasmoniske Transport i Strømbelastningsevne sølv nanotråde

Plasmonics is an emerging technology capable of simultaneously transporting a plasmonic signal and an electronic signal on the same information ...

Analyzing the Movement of the Nauplius 'Artemia salina' by Optical Tracking of Plasmonic Nanoparticles

Analyzing the Movement of the Nauplius 'Artemia salina' by Optical Tracking of Plasmonic Nanoparticles

Analyse af Bevægelse af Nauplius &#39;<em&gt; Artemia salina</em&gt; &#39;Ved optisk sporing af plasmoniske Nanopartikler

We demonstrate how optical tweezers may provide a sensitive tool to analyze the fluidic vibrations generated by the movement of small aquatic organisms. A ...

Energy Dispersive X-ray Tomography for 3D Elemental Mapping of Individual Nanoparticles

Energy Dispersive X-ray Tomography for 3D Elemental Kortlægning af Individuelle Nanopartikler

Energy dispersive X-ray spectroscopy within the scanning transmission electron microscope (STEM) provides accurate elemental analysis with high spatial ...

Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle

Måling af Spredning ulineariteter fra en enkelt plasmoniske Nanopartikel

Plasmonics, which are based on the collective oscillation of electrons due to light excitation, involve strongly enhanced local electric fields and thus ...

Multifunctional Hybrid Fe2O3-Au Nanoparticles for Efficient Plasmonic Heating

Multifunctional Hybrid Fe2O3-Au Nanoparticles for Efficient Plasmonic Heating

Multifunktionel Hybrid Fe<sub&gt; 2</sub&gt; O<sub&gt; 3</sub&gt; Au Nanopartikler for Effektiv plasmoniske Opvarmning

One of the most widely used methods for manufacturing colloidal gold nanospherical particles involves the reduction of chloroauric acid (HAuCl4) to ...

High Temperature Fabrication of Nanostructured Yttria-Stabilized-Zirconia (YSZ) Scaffolds by In Situ Carbon Templating Xerogels

High Temperature Fabrication of Nanostructured Yttria-Stabilized-Zirconia YSZ Scaffolds by In Situ Carbon Templating Xerogels

Høj temperatur Fabrikation af nanostrukturerede yttriastabiliseret-Zirconia (YSZ) Stilladser ved<em&gt; In Situ</em&gt; Carbon Templatering Xerogeler

We demonstrate a method for the high temperature fabrication of porous, nanostructured yttria-stabilized-zirconia (YSZ, 8 mol% yttria - 92 mol% zirconia) ...