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 materiale er baseret på arbejde støttes af grundlæggende videnskab forskningsprogrammet gennem National Research Foundation af Korea (NRF) finansieret af Ministeriet for videnskab, IKT og fremtidige planlægning (NRF-2017R1A2B4008053) og ministeriet for handel, industri og energi ( MOTIE, Korea) under industriel teknologi Innovation Program No. 10052802 og Korea Institut for fremme af teknologi (KIAT) gennem programmet tilskyndelse til industrier af økonomisk samarbejde Region (N0002310).

1. fremstilling af Nano-Micro Multiscale struktur overflade ved hjælp af en AAO Filter (figur 1)
<ol><li>Købe en AAO filter med en porestørrelse, højde og diameter 200 nm, 60 µm og 25 mm, henholdsvis.</li>
	<li>1.2. Rengør overfladen af polyethylenterephthalatfolie (PET) med en tykkelse på 100 μm at bruge acetone med 99,8% og isopropylalkohol (IPA) med 99,9% i 5 min, og fuldstændig tør i 3 min. ved hjælp af en luftpistol.</li>
	<li>Placer PET-folie på en flad overflade uden for...

<ol>
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T., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Nanoporous+alumina+as+templates+for+multifunctional+applications.">Nanoporous alumina as templates for multifunctional applications.</a> Applied Physics Reviews. 1, 031102 (2014).</li><li>Hong, S. H., Bae, B. J., Lee, H., Jeong, J. 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Det vigtigste skridt i fabrikation af den selvstændig aggregerede nanofiber forsamling er at sikre, at filteret sprødt AAO ikke bryder ved anvendelse af harpiks med gummi ruller. Faktisk bør det sikres, at filteret AAO ikke bryder på noget tidspunkt før trinnet ætsning. Fordi filteret AAO er 25 mm i diameter, er størrelsen af substratet ca 30 x 30 mm.
Den selvstændige aggregerede nanofiber forsamling tillader os at give forskellige funktionelle overflader gennem den korrekt overfladebe...

Nanoskala tekstureret strukturer såsom nanopartikler, nanorør og nanofibers har vakt opmærksomhed i det videnskabelige samfund, da de demonstrerer unikke egenskaber i forskellige programmer, herunder elektriske, biomedicinske, optisk og overflade ingeniør1,2,3,4,5,6,7,8. Især er nanofibers meget udbredt i elastisk og gennemsigtig elektroder9, wearable sensorer10,11, sammenkoblinger12,13og nano-optik applikationer 14. blandt de forskellige metoder til opdigte nanoskala strukturer, såsom sol-gel metoder, samlesæt, litografi, og replikering15,16,17,18, 19,20, direkte replikering ved hjælp af en skabelon er i øjeblikket betragtes som en lovende metode, fordi den er enkel, omkostningseffektiv og gælder for forskellige helbredes materialer21,22 , 23 , 24 , 25 , 26.
På grund af dens multiscale struktur har et stort antal nanoskala porer og mikro-skala højde, er AAO almindeligt anvendt som skabelon for fabrikation af nanofibers og nanorør med en høj skærmformat27,28,29 , 30. imidlertid på grund af overfladespænding på sådan en høj størrelsesforhold, nanofibers tendens til at nemt samle31,32,33. Eksisterende forskning har vist sig at nanofibers har et aspekt forholdet er større end 15:1 gør ikke stå oprejst men i stedet samle, mens dem, der har et forhold mindre end 5:1 er individuelt isoleret uden sammenlægning33,34. Kapillar kraft og overfladespænding spille en vigtig rolle ved fjernelse af alumina ved hjælp af en TIPkan, som er en af processerne under nanofiber fabrikation. Når størrelsesforholdet stiger, overfladespænding blandt nanofibers har tendens til at trække dem tættere på hinanden, forårsager sammenlægning. Flere studier har fokuseret på metoder til at forebygge sådanne sammenlægning35, som er især observeret i polymer og metalliske nanofibers. Blandt disse, kan hydrering af nanofiber overflade reducere byområdet, fordi når en flydende indtager mellemrum mellem nanofibers, nedsætter overfladespænding. Yderligere, den freeze-drying metode kan også reducere sammenlægning af faldende overfladespænding mellem nanofibers. Dog trods forskellige bestræbelser fortsat opretning af nanofibers med en høj formatforhold en udfordring.
Med henblik herpå rapporterer vi en unik metode til at opdigte multiscale strukturer af sammenfiltrede nanofiber ved at udnytte fænomenet sammenlægning på en positiv måde. Her, nanofiber struktur er præget ved hjælp af en AAO filter og polyurethan-acrylat (PUA)-Skriv harpikser med en viskositet på 257.4 cP. Efter UV nano aftryk litografi (UV-nul) udføres, ætset formen med en natriumhydroxidoploesning. For at karakterisere de foreslåede multiscale strukturer, undersøge vi mønster adfærd af prøven med aggregerede nanofibers og den overflade befugtningen efter korrekt overfladebehandling som belægning med en selvsamlede éncellelag og UV ozon behandling . Desuden foreslår vi, at den multiscale porøse overflade kan konverteres simpelthen til en glat overflade ved hjælp af et smøremiddel-infunderes proces.

<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 overfladen strukturer har tiltrukket sig stigende interesse på grund af flere potentielle anvendelser i overfladen enheder. Men en eksisterende udfordring i feltet er fabrikation af hybrid mikro-nano strukturer ved hjælp af en letkøbt, omkostningseffektive og høj overførselshastighed metode. For at overvinde disse udfordringer, foreslår dette papir en protokol til at fabrikere multiscale strukturer ved hjælp af kun et aftryk proces med en anodisk aluminiumoxid (AAO) filter og en fordampning selvstændig sammenlægning proces af nanofibers. I modsætning til tidligere forsøg, der har til formål at rette nanofibers, viser vi en unikke fabrikationsanlæg metode for multiscale aggregerede nanofibers med høj aspektforhold. Derudover blev overflade morfologi og befugtningen af disse strukturer på forskellige væsker undersøgt for at lette deres brug i multifunktionelle overflader.

Vi viste en hurtig og enkel metode til fabrikation af multiscale nano-micro hybrid strukturer ved hjælp af en AAO filter som en prægning skimmel. Hele processen tog 30 min (figur 4). Det skal bemærkes, at den resulterende overflade efter undergår ætsning processen ved hjælp af NaOH, udstillet en uigennemsigtig farve svarende til den oprindelige AAO filter, på grund af den aggregerede nanofiber forsamling forårsaget af overfladespænding. Yderligere, r...

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

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Solid oxide fuel cells (SOFCs) are potentially the most efficient and cost-effective solution to utilization of a wide variety of fuels beyond hydrogen ...

Fabrication of Nano-engineered Transparent Conducting Oxides by Pulsed Laser Deposition

Fremstilling af Nano-manipuleret ledende gennemsigtige Oxider af Impuls Laser Deposition

Nanosecond Pulsed  Laser Deposition (PLD) in the presence of a background gas allows the deposition  of metal oxides with tunable morphology, structure, ...

High-speed Particle Image Velocimetry Near Surfaces

High-speed Particle Billede Velocimetri nærheden Surfaces

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

Enkeltlags Kontakt doping af silicium overflader og nanotråde Brug organophosphorforbindelser

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

Uden kerner Vækst af Bismuth nanowire Array via Vakuum Termisk 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

Kortvarigt felt Baseret Photoacoustics: Optisk Property Evaluering ved Overflader

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 Baseret på multiscale Composite Materials Forstærket 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-Kogning Heat-Transfer Enhancement på cylindriske flader med Hybrid Fugtelige Mønstre

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

Forberedelse af flydende krystal netværk for makroskopisk oscillerende bevægelse fremkaldt af 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

Opdigte reaktive overflader med børste-agtig og Crosslinked film af Azlactone-Functionalized blok Co polymerer

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