Name: multiscale structures aggregated by imprinted nanofibers for functional surfaces
Uploaded: 2018-09-11T14:45:00
Description: Watch this Scientific Journal Video about Multiscale Structures Aggregated by Imprinted Nanofibers for Functional Surfaces at JoVE.com

Dette materialet er basert på arbeid støttes av grunnleggende vitenskap forskningsprogrammet gjennom National Research Foundation av Korea (NRF) finansiert av departementet for vitenskap, IKT og fremtiden planlegging (NRF-2017R1A2B4008053) og departementet for handel og industri energi ( MOTIE, Korea) under industriell teknologi innovasjon Program. 10052802 og Korea Institutt for fremme av teknologi (KIAT) gjennom programmet oppmuntring for næringer økonomisk samarbeid regionen (N0002310).

1. fabrikasjon av Nano-Micro Multiscale struktur overflate ved hjelp av et AAO Filter (figur 1)
<ol><li>Kjøpe et AAO filter med porestørrelse, høyde og diameteren på 200 nm, 60 µm og 25 mm, henholdsvis.</li>
	<li>1.2. rengjør overflaten av polyetylen terephthalate (PET) filmen har en tykkelse på 100 μm å betjene med 99.8% og isopropylalkohol (IPA) med 99,9% etter 5 min, og helt tørt for 3 min bruker en luftkanon.</li>
	<li>Plasser PET filmen på en flat overflate uten forurensnin...

<ol>
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Det viktigste trinnet i fabrikasjon av selv aggregert nanofiber er å sikre at sprø AAO filteret ikke bryte når harpiks med gummi valsene. Faktisk bør det sikres at AAO filteret ikke bryte helst før etsing trinn. AAO filteret er 25 mm i diameter, er størrelsen på underlaget ca 30 x 30 mm.
Samlingen selv aggregert nanofiber tillater oss å gi ulike funksjonelle flater gjennom riktig overflatebehandling. Etter preging, primære overflaten er hydrofile, men det kan endres og bli hydrofobe v...

Nanoskala teksturert strukturer som nanopartikler nanorør og nanofibers har tiltrukket seg oppmerksomhet i det vitenskapelige samfunnet, som viser de unike egenskaper i forskjellige programmer, inkludert elektriske, biomedisinsk, optisk og overflate Engineering1,2,3,4,5,6,7,8. Spesielt er nanofibers mye brukt i elastisk og gjennomsiktig elektroder9, wearable sensorer10,11, sammenkoblinger12,13og nano-optikk programmer 14. blant de forskjellige metodene å fabrikere nanoskala strukturer, for eksempel sol-gel metoder, selvstendig montering, litografi og replikering15,16,17,18, 19,20, direkte replikering ved hjelp av en mal er for tiden betraktet en lovende metode fordi det er enkelt, kostnadseffektivt og gjelder for ulike kureres materialer21,22 , 23 , 24 , 25 , 26.
På grunn av sin multiscale strukturen har et stort antall nano-skala porene og mikro-Skaler høyde, er AAO mye brukt som mal for fabrikasjon av nanofibers og nanorør med en høy størrelsesforholdet27,28,29 , 30. imidlertid på grunn av overflatespenningen med slik en høy størrelsesforhold, nanofibers tendens til å enkelt samle31,32,33. Eksisterende forskning har vist at nanofibers har et størrelsesforhold som er større enn 15:1 gjør ikke stå oppreist, men i stedet samlet, mens de som har en mindre enn 5:1-forhold er individuelt isolert uten aggregering33,34. Kapillær kraft og overflatespenning spiller en viktig rolle ved fjerning av alumina bruker en etsematerialer, som er en av prosessene i nanofiber fabrikasjon. Når størrelsesforholdet øker, overflatespenning blant nanofibers tendens til å trekke dem nærmere hverandre, forårsaker aggregering. Flere studier har fokusert på metoder for å hindre slike aggregering35, som er spesielt observert i polymer og metallisk nanofibers. Blant disse kan hydrering av nanofiber overflaten redusere agglomeration fordi når en væske tar mellomrommene mellom nanofibers, overflatespenning reduseres. Videre, fryse-tørking metoden kan også redusere samling ved å redusere overflatespenningen mellom nanofibers. Til tross for ulike forsøk imidlertid retting av nanofibers med høy størrelsesforholdet en utfordring.
Dette rapportere vi en unik metode for fabrikasjon multiscale strukturer av sammenfiltrede nanofiber ved å utnytte aggregering fenomenet på en positiv måte. Her nanofiber strukturen er preget med et AAO og polyuretan-acrylate (PUA)-type harpiks med en viskositet på 257.4 cP. Etter UV nano forlaget litografi (UV-NIL) er utført, mold er risset inn med en NaOH løsning. Betegner de foreslåtte multiscale strukturene, undersøker vi mønster atferd av prøven med samlet nanofibers og overflate wettability etter riktig overflatebehandling som belegg med en selv montert monolayer og UV-ozon behandling . Videre foreslår vi at multiscale porøse overflaten kan konverteres bare til en glatt overflate bruker en smøremiddel-tilført.

<table>
	<tbody>
		<tr>
			<td>MINS 511RM</td>
			<td>Minuta Tech</td>
			<td></td>
			<td>UV curable resin</td>
		</tr>
		<tr>
			<td>Octadecyltrichlorosilane (OTS)</td>
			<td>Aldrich</td>
			<td></td>
			<td>Surface treatment</td>
		</tr>
		<tr>
			<td>Sodium oxidanide</td>
			<td>SAMCHUN</td>
			<td></td>
			<td>Etching solution</td>
		</tr>
		<tr>
			<td>Anopore Inoganic Membranes</td>
			<td>Whatman</td>
			<td></td>
			<td>25mm/0.2&#181;m</td>
		</tr>
		<tr>
			<td>MT-UV-A 47</td>
			<td>Meiji Techno</td>
			<td></td>
			<td>UV curing equipment</td>
		</tr>
		<tr>
			<td>UVC-30</td>
			<td>Jaesung Engineering</td>
			<td></td>
			<td>UVO treatment equipment</td>
		</tr>
		<tr>
			<td>Smart Drop Plus</td>
			<td>FEMTOFAB</td>
			<td></td>
			<td>Contact angle measurement</td>
		</tr>
		<tr>
			<td>Fluorinert FC-70</td>
			<td>3M</td>
			<td></td>
			<td>liquid mixture of completely fluorinated aliphatic compounds</td>
		</tr>
		<tr>
			<td>Polyethylene terephthalate film</td>
			<td>Sunchem</td>
			<td></td>
			<td>Substrate</td>
		</tr>
		<tr>
			<td>Acetone (99.8%)</td>
			<td>Daejung</td>
			<td></td>
			<td>Cleaning solution</td>
		</tr>
		<tr>
			<td>Isopropyl alcohol (99.9%)</td>
			<td>Daejung</td>
			<td></td>
			<td>Cleaning solution</td>
		</tr>
		<tr>
			<td>Rubber roller</td>
			<td>Hwahong</td>
			<td></td>
			<td>For application of resin</td>
		</tr>
		<tr>
			<td>Corning Stirring Hot Plates</td>
			<td>Corning</td>
			<td></td>
			<td>Hot plate equipment (5&#34; x 7&#34;)</td>
		</tr>
	</tbody>
</table>

multiscale structures aggregated by imprinted nanofibers for functional surfaces

Multiscale overflate strukturer har tiltrukket seg økte interessen på grunn av flere bruksmuligheter i overflate enheter. Men er en eksisterende utfordring innen fabrikasjon av hybrid mikro-nano strukturer ved hjelp av en lettvinte, kostnadseffektiv og høy gjennomstrømming metode. For å overvinne disse utfordringene, foreslår notatet en protokoll for å dikte multiscale strukturer ved hjelp av bare et avtrykk prosessen med et anodic aluminiumoksid (AAO) filter og en Fordampingsavkjøling selv samling prosessen med nanofibers. I motsetning til tidligere forsøk som å rette nanofibers, viser vi en unik fabrikasjon metode for multiscale aggregert nanofibers med høy størrelsesforhold. Videre ble overflaten morfologi og wettability av disse strukturene på ulike væsker undersøkt for å lette bruken i multifunksjonelle overflater.

Vi viste en rask og enkel metode for fabrikasjon av multiscale nano-micro hybrid strukturer ved hjelp av et AAO filter som en preging mold. Hele prosessen tok 30 min (Figur 4). Det ble bemerket at etter under etsing prosessen med NaOH, resulterende overflaten utstilt en ugjennomsiktig farge ligner det opprinnelige AAO filteret, på grunn av samlingen aggregert nanofiber forårsaket av overflatespenningen. Videre bekreftet resultatene av EDX analysen at AAO fi...

Watch this Scientific Journal Video about Multiscale Structures Aggregated by Imprinted Nanofibers for Functional Surfaces at JoVE.com

Multiscale Structures Aggregated by Imprinted Nanofibers for Functional Surfaces

Multiscale strukturer aggregert av trykt Nanofibers for funksjonell overflater

Presentert er en enkel metode å dikte nano-micro multiscale strukturer, for funksjonell overflater, ved å aggregere nanofibers fabrikasjon benytter en anodic aluminiumoksid filter.

Multiscale surface structures have attracted increasing interest owing to several potential applications in surface devices. However, an existing ...

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High-speed Particle Image Velocimetry Near Surfaces

High-speed Particle Bilde velocimetry nærheten Overflater

Multi-dimensional and transient flows play a key role in many areas of science, engineering, and health sciences but are often not well understood. The ...

Monolayer Contact Doping of Silicon Surfaces and Nanowires Using Organophosphorus Compounds

Monolayer Contact Doping (MLCD) is a simple method for doping of surfaces and nanostructures1. MLCD results in the formation of highly controlled, ultra ...

Seedless Growth of Bismuth Nanowire Array via Vacuum Thermal Evaporation

Seedless Vekst av Bismuth nanowire Array via Vacuum Thermal Fordampning

Here a seedless and template-free technique is demonstrated to scalably grow bismuth nanowires, through thermal evaporation in high vacuum at RT. ...

Evanescent Field Based Photoacoustics: Optical Property Evaluation at Surfaces

Flyktige feltet Basert Photoacoustics: Optisk Evaluering eiendom på Overflater

Here, we present a protocol to estimate material and surface optical properties using the photoacoustic effect combined with total internal reflection. ...

Strain Sensing Based on Multiscale Composite Materials Reinforced with Graphene Nanoplatelets

Strain Sensing Basert på Multiscale komposittmaterialer forsterket med Graphene Nanoplatelets

The electrical response of NH2-functionalized graphene nanoplatelets composite materials under strain was studied. Two different manufacturing methods are ...

Pool-Boiling Heat-Transfer Enhancement on Cylindrical Surfaces with Hybrid Wettable Patterns

Pool-Koke Heat-Transfer Enhancement på sylinderflater med Hybrid Fukt Patterns

In this study, pool-boiling heat-transfer experiments were performed to investigate the effect of the number of interlines and the orientation of the ...

Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light

Utarbeidelse av flytende krystall nettverk for makroskopisk oscillasjon bevegelse av lys

A strategy based on doped liquid crystalline networks is described to create mechanical self-sustained oscillations of plastic films under continuous ...

Fabricating Reactive Surfaces with Brush-like and Crosslinked Films of Azlactone-Functionalized Block Co-Polymers

Fabrikere reaktive overflater med børste som og krysskoblet filmer av Azlactone-Functionalized blokk co polymerer

In this paper, fabrication methods that generate novel surfaces using the azlactone-based block co-polymer, poly (glycidyl methacrylate)-block-poly (vinyl ...