Biomod/2012/Titech/Nano-Jugglers/Experiments & Simulation/Experimental Methods

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} </style> </head> <BODY> <div id="biomodlink"> <<a href="http://openwetware.org/wiki/Biomod">BIOMOD</a>|<a href="http://openwetware.org/wiki/Biomod/2012">2012</a>|Titech Nano-Jugglers </div> <div id="header"> <div id="navigation"> <div id="menu"> <ul> <li><a href="http://openwetware.org/wiki/Biomod/2012/Titech/Nano-Jugglers"><br>Home<br><br></a></li> <li><a href="http://openwetware.org/wiki/Biomod/2012/Titech/Nano-Jugglers/Team/Students"><br>Team<br><br></a></li> <li><a href="http://openwetware.org/wiki/Biomod/2012/Titech/Nano-Jugglers/Project"><br>Project<br><br></a></li> <li><a href="http://openwetware.org/wiki/Biomod/2012/Titech/Nano-Jugglers/Results">Results<br>&<br>Methods</a></font></li> <li class="ach"><a href="http://openwetware.org/wiki/Biomod/2012/Titech/Nano-Jugglers/Achievements"><br>Achievements<br><br></a> <li class="sup"><a href="http://openwetware.org/wiki/Biomod/2012/Titech/Nano-Jugglers/Protocols"><br>Suppl. Info.<br><br></a></li> <li class="none"><a href="http://openwetware.org/wiki/Biomod/2012/Titech/Nano-Jugglers/Acknowledgement"><br>Acknowledgements<br><br></a></li> </ul> </div> </div> </div> </BODY> </html>

Contents

Goals.jpg Goals.png

    We have set 3 goals, that is "Energy production for rail-free movement", "Speeding up", and "Direction control".

Methods

<html><A href=#TOP title="Vapor deposition"><IMG width="300px" src="http://openwetware.org/images/a/a5/Vapor_deposition.jpg"></A></html> <html><A href=#TOP title="SAM conjugation"><IMG width="300px" src="http://openwetware.org/images/4/48/Thiol_.jpg"></A></html> <html><A href=#TOP title="EDAC conjugation"><IMG width="300px" src="http://openwetware.org/images/3/3d/EDAC_conjugation.jpg"></A></html>
<html><A href=#TOP title="DNA design"><IMG width="300px" src="http://openwetware.org/images/b/b2/DNA_design.jpg"></A></html> <html><A href=#TOP title="半白金 1μの動画"><IMG width="300px" src="http://openwetware.org/images/8/80/Damy.png"></A></html> <html><A href=#TOP title=DNA hybrudization><IMG width="300px"

src="http://openwetware.org/images/f/f1/DNA_hybrudization.jpg"></A></html>

<html><A href=#TOP title="ハイスピードカメラ"><IMG width="300px" src="http://openwetware.org/images/8/80/Damy.png"></A></html> <html><A href=#TOP><IMG width="300px" src="http://openwetware.org/images/e/ed/%E3%82%AB%E3%82%BF%E3%83%A9%E3%83%BC%E3%82%BC.jpg"></A></html> <html><A href=#TOP title="Azobenzene"><IMG width="300px" src="http://openwetware.org/images/e/ea/Azobenzene.jpg"></A></html>

Vapor deposition of Au and Cr on the polystyrene body

Body and Control.png
Vapor deposition.jpg     Vapor deposition is a method for forming a thin metal film on the surface of the substrate. In this project, Gold and Chromium were deposited on the polystyrene beads in order to conjugate specific DNA onto the determined location on the surface.
>>see more Method
>>see Result
BIOMODPVDM1.png

1st Deposition

First, we deposit gold on the polystyrene-bead in order to make gold hemisphered body.

2nd Deposition

Next, we change the direction of beads, and deposit chromium on the body. Then we pick up polystyrene-bead, which are deposited by quarter gold and half chromium. By chromium capping, this "head part" is prevented to conjyugate DNA strands, so platinum only mounted at the rear.

After PVD

Through twice of physical vapor deposition,
  • we conjugate thiol modified DNA onto gold part.
  • we conjugate amino modified DNA onto polystyrene part.
  • There are no DNA staple strands on chromium hemisphere.
Therefore, platinum particles can't conjugate onto chromium hemisphere.
As a result, JET starts to move toward chromium hemisphere heading.

DNA conjugation

300px
Thiol .jpg
SAM

    We bond Au with DNA using thiol.

>>see more Method
>>see Result
EDAC conjugation.jpg

EDAC     We bond polystyrene-beads with DNA using EDAC.

>>see more Method
>>see Result

DNA Design

Body and Control.png
DNA design.jpg

    We used NUPACK and designed five strands of DNA.

>>see more Method

Observation of platinum hemisphere

Rail-free and High-speed.png
Damy.png

DNA hybridization in solution of H2O2

Body and Rail-free and High-speed.png
BIOMODTNJEPR TITLE.JPG

    We used PAGE electrophoresis to ascertain the stability of DNA duplex in thin H₂O₂ solution 1%~5%.

>>see more Method
>>see Result

Analysis of platinum by High-speed camera

Rail-free and High-speed.png
Damy.png

Energy production by using catalase

High-speed.png
Damy.png

Dissociation of azobenzene-modified DNA by UV-light irradiation

Directional control.png
Azobenzene.jpg

    Azobenzene including DNA can easily dissociate its duplex by irradiating UV-light. We put this switching system in JET body and enabled its control.

>>see more Method
>>see Result