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Carolyn Nichol, PhD
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  • Houston, TX
  • United States
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Self Assembly, more beautiful than ever

Look at how we can use our understanding of nanostructures to build microscopic crystal flowers:
http://science.nbcnews.com/_news/2013/05/17/18326298-microscopic-crystal-flowers-build-themselves-in-a-harvard-lab?lite

Nanotechnology on your device

While there is nanotechnology (i.e. nanosized transistors) in your iPhone and other devices, there are some cool apps that you can download for free that can be used to help describe various aspect of nanotechnology.
A couple are shown here https://itunes.apple.com/us/app/robotics-in-app-nanotechnology/id534160914?mt=8 and are free at the iPhone store.
This is my favorite carbon nanotube app http://www.nanotubeapp.com/ It costs $0.99 but is really amazing.

Superomniphobicity or how nanopants are affecting the no slip condition 


When I was an undergraduate majoring in chemical engineering, my favorite class was fluid dynamics. It was so much more visual and relevant than thermodynamics or a lot of the mass balance-type problem sets that we spent so much time solving. When I thought of fluid dynamics, I thought about scuba diving or tubing down a river. It was easier to understand turbulent and laminar flow when you could close your eyes and think of a riverbed. However, I have just learned that one of the primary assumptions that I made in all those calculations in fluid dynamics – that is the no slip at the wall is, thanks to nanotechnology, being shown to be not so simple. According to Dr. Doug Natelson’s blog Nanoscale Views, developments in surface chemistry have made coatings that are so water repellent that no slip boundary condition a poor assumption in many cases. Back in in the No Slip days was assumed that at the fluid-surface the molecules stuck on the surface and didn’t move, then because of shear stresses and viscosity, a velocity profile would develop that in a cylindrical pipe, would have a maximum in the center of the pipe. Now, however, the latest in surface coatings are Superomniphobic. These coatings are more advanced than the coatings on khaki nanopants, which were designed to repel water and minimize staining. While eliminating the no slip boundary condition will challenge many student’s concepts and calculations in fluid dynamics, it does make for some cool videos (see http://www.popsci.com/science/article/2013-01/video-liquid-bounces-new-superomniphobic-material). For more information on Superomniphobicity please see Dr. Doug Natelson’s blog Nanoscale Views http://nanoscale.blogspot.com/2013/02/superomniphobicity.html.

Not all carbon nanotubes are created equally


The family of carbon nanotubes is large. There can be single walled carbon nanotubes (SWNTs), which are like a rolled up sheet of graphene - a monolayer of carbon bonded into a tubelike structure or they could be multiwalled carbon nanotubes, which have concentric layers of these graphene tubes. These carbon nanotubes can have large aspect ratios (length to width) or could be cut into ultra short carbon nanotubes. In fact, carbon nanotubes come in thousands of different molecular weights and isomers.

One of the most interesting characteristic of Carbon Nanotubes is how dependent the material properties are on small changes in structure. For example, small changes in the way that the carbon atoms align results in the difference between the SWNT being a metal or a semiconductor. This difference in the way the carbons align is called Chirality. Here is an easy way to demonstrate what chirality is. Take a transparency sheet with graphene's structure copied on it and connect two ends to form a cylinder. That is the model of one kind of carbon nanotube with the chiral index of (n, m) where n is the number of carbon atoms across the grid (at the center of each hexagonal structure on your transparency) and m would be zero since you havent moved down the matrix. If you want to make another kind of nanotube, you need to twist the graphene transparency and make a new tube that has a constant diameter. Scientists discovered an odd trend. When (n-m) is divisible by 3 (the product is an integer) then the SWNT is metallic, otherwise it is a semiconductor. Small changes in the arrangement of carbon atoms affects the electronic nature of these materials.

tectosquares

I am writing this blog as I procrastinate writing the final exam for my BioNano class this fall. During the class, student picked current peer reviewed journal articles and presented them in a short Pecha Kucha format. This means presenting 20 PPT with 20 sec per slide. Topics ranged from applications of gold nanoparticles for lung cancer detection, the effects of feeding Buckyballs to mice, and antimicrobial properties of nanosilver. Students in the class were required to read the papers chosen by their classmates and write up a list of questions (collected for a grade). I thought the format worked out well. Very short presentations followed by fairly animated dialogue (for a 9:30 AM class).

Since the students chose the articles, some were very familiar to me but some were quite unexpected. One of the more interesting topics that I learned about was making tectosquares that are RNA sequences that self assemble into ladder-like nanostructures. In the paper listed below, they used nanogold particles to quantify the spacing. Very Elegant.
Controlled Spacing of Cationic Gold Nanoparticles by Nanocrown RNA
Alexey Y. Koyfman,§,† Gary Braun,§ Sergei Magonov,‡ Arkadiusz Chworos,§ Norbert O. Reich,§,† and Luc Jaeger*,§,† J. AM. CHEM. SOC. 2005, 127, 11886-11887
 

Carolyn Nichol, PhD's Page

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Carolyn Nichol, PhD posted a blog post

Science Education Resources for Elementary Teachers

Please pass on this free resource for elementary science teachers. It provides complete lesson plans on a  wide range of science topics. RESCu.rice.eduSee More
Nov 16, 2012

Full member
TINC liked Carolyn Nichol, PhD's blog post All carbon nanotubes are not created equally
May 25, 2011

Full member
Carolyn Nichol, PhD posted a blog post

All carbon nanotubes are not created equally

The family of carbon nanotubes is large. There can be single walled carbon nanotubes (SWNTs), which are like a rolled up sheet of graphene - a monolayer of carbon bonded into a tubelike structure or they could be multiwalled carbon nanotubes, which have concentric layers of these graphene tubes. These carbon nanotubes can have large aspect ratios (length to width) or could be cut into ultra short carbon nanotubes. In fact, carbon nanotubes come in thousands of different molecular weights and…See More
May 25, 2011

Full member
Carolyn Nichol, PhD posted a blog post

Tectosquares

I am writing this blog as I procrastinate writing the final exam for myBioNano class this fall. During the class, student picked current peerreviewed journal articles and presented them in a short Pecha Kuchaformat. This means presenting 20 PPT with 20 sec per slide. Topicsranged from applications of gold nanoparticles for lung cancerdetection, the effects of feeding Buckyballs to mice, and antimicrobialproperties of nanosilver. Students in the class were required to readthe papers chosen by…See More
Nov 28, 2010

Full member
OYEDIRAN Oyewale Akanfe commented on Carolyn Nichol, PhD's blog post How to teach nanotechnology in 3 days
"i want to be part of this nanotechnology does not exist in the university where i work at all please i seek your assistance for better understanding of this"
Oct 30, 2010

Full member
Raghavendran T E commented on Carolyn Nichol, PhD's blog post Proton Size
"Dear Dr. Nichol, Do you think this discovery brings in a new problem, since we have been doing our calculations based on our old measurements, and we haven't faced problems yet. Raghavendran"
Sep 15, 2010

Full member
Carolyn Nichol, PhD posted a blog post

Proton Size

I woke up this morning feeling maybe smaller, maybe less energized. Infact, a new study in Nature calculates that the proton is 4% smallerthan previously thought or as this Scientific American headline reads"proton shrinks in size"http://www.scientificamerican.com/article.cfm?id=proton-shrinks-in-size.So perhaps my jeans really do fit better today because my protons aresmaller than they were last week. What do…See More
Sep 10, 2010

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Carolyn Nichol, PhD updated their profile
Jul 2, 2010

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Chemist, Engineer
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Chemical education, nanoscience, polymer science
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Rice University
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Carolyn Nichol, PhD's Blog

Science Education Resources for Elementary Teachers

Posted on November 14, 2012 at 2:41pm 0 Comments

Please pass on this free resource for elementary science teachers. It provides complete lesson plans on a  wide range of science topics. RESCu.rice.edu

All carbon nanotubes are not created equally

Posted on May 25, 2011 at 4:36am 0 Comments

The family of carbon nanotubes is large. There can be single walled carbon nanotubes (SWNTs), which are like a rolled up sheet of graphene - a monolayer of carbon bonded into a tubelike structure or they could be multiwalled carbon nanotubes, which have concentric layers of these graphene tubes. These carbon nanotubes can have large aspect ratios (length to width) or could be cut into ultra short carbon nanotubes. In fact, carbon nanotubes come in thousands of different molecular weights and… Continue

Tectosquares

Posted on November 28, 2010 at 4:54pm 0 Comments

I am writing this blog as I procrastinate writing the final exam for my

BioNano class this fall. During the class, student picked current peer

reviewed journal articles and presented them in a short Pecha Kucha

format. This means presenting 20 PPT with 20 sec per slide. Topics

ranged from applications of gold nanoparticles for lung cancer

detection, the effects of feeding Buckyballs to mice, and antimicrobial

properties of nanosilver. Students in the class were… Continue

Proton Size

Posted on September 10, 2010 at 4:46am 1 Comment

I woke up this morning feeling maybe smaller, maybe less energized. In

fact, a new study in Nature calculates that the proton is 4% smaller

than previously thought or as this Scientific American headline reads

"proton shrinks in size"

http://www.scientificamerican.com/article.cfm?id=proton-shrinks-in-size.

So perhaps my jeans really do fit better today because my protons… Continue

Nanocomposites and everyday things

Posted on June 11, 2010 at 5:49am 0 Comments

just put some Saran wrap on leftovers. Was it Saran or some cheaper

knock off? Does it matter? Probably not, since my family will eat it

tomorrow regardless (they are not picky). However, if you were packing a

product to be shipped around the world, like an expensive

pharmaceutical product or even an inexpensive snack, you would care.

Time is money - esp. when it is sitting on a store shelf.



How does this relate to the esoteric term, nanocomposites? The cause… Continue

Comment Wall (16 comments)

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Join The International NanoScience Community

At 9:18am on February 14, 2010,
Full member
Sachin R Patil.
said…
how can learn the basic of nanotechnology,as i am from pharmacy backround can i study the whole concept of physics.
In study of nanomedicine which concept must learn carefully? for the basic
I am unkown to this field now so help me.
At 9:28am on December 19, 2009,
Full member
Ram
said…
Welcome to our community mam. I heard a lot about your university and its work. Shall i share my views regarding Nanoscience with you?
At 3:12pm on December 5, 2009,
Full member
Irgeorge Pecore
said…
...The goal in life is living in agreement with nature. - Zeno, philosopher

GOAL - ...we are here to engage and challenge each other on sustainable design and Green Construction initiative. As jurisdictions around the world, pursue the goal of creating greener, more sustainable communities, the enforcement of a consistent, regulatory framework such as the International Codes will ensure safety of the Global environment...


Visit Arkitext Network
http://arkitextnetworking.ning.com/profile/earth
mainpage: http://arkitext.webs.com/
At 9:53am on November 13, 2009,
Full member
Dr BALIRAM
said…
DESIRE TO COLLABORATE PROJECT ON SINGLE WALL CARBON NANOTUBE
At 9:43pm on August 10, 2009,
Full member
Jagadeesh S
said…
thank u mam for accept my request
At 8:41am on April 14, 2009,
Full member
fateme sadeghi
said…
Hi
thank you for your useful blog spots.
fatima
At 5:14pm on March 25, 2009,
Full member
SANTHOSH
said…
Respected Sir,
I would like to introduce myself “SANTHOSH.M” , pursuing M.Sc Nanoscience & technology FROM BHARATHIAR UNIVERSITY COIMBATORE, TAMIL NADU, INDIA. I have done B.sc ( PHYSICS), BHARATHIDHASEN UNIVERSITY TRICHY, , TAMIL NADU, INDIA. I want to make my career in research. so i need PhD or job in nanomaterials please kindly help me.
.
I’ll be grateful to you for an earliest reply.
Thanking you.
With Regards,
SANTHOSH.M
M.Sc Nanoscience&technology
At 5:06pm on March 25, 2009,
Full member
SANTHOSH
said…
Dear maam,
Respected Maam,
I would like to introduce myself “SANTHOSH.M” , pursuing M.Sc Nanoscience & technology FROM BHARATHIAR UNIVERSITY COIMBATORE, TAMIL NADU, INDIA. I have done B.sc ( PHYSICS), BHARATHIAR UNIVERSITY , TAMIL NADU, INDIA.
Maam, . I want to make my career in research. so i need PhD in nanomaterials please kindly help me
.
I’ll be grateful to you for an earliest reply.
Thanking you.
With Regards,
SANTHOSH.M
M.Sc Nanoscience&technology
At 2:17pm on February 27, 2009,
Full member
Manish Kr. Priydarshi
said…
Respected Maam,
I would like to introduce myself “Manish Kumar Priydarshi” , pursuing M.Sc Nanoscience(by Research), from Amity Institute of Nanotechnology, AMITY University, Noida, India. I have done B.sc Chemsitry (Hons), from J.P.N. University, Chapra, Bihar.
Maam, I am in IInd Semester and I have to do 12months dissertation work for III and IVth Semester, as per our course curriculum, starting from June 2009. I want to make my career in research.
. I would like to explore the possibilities to join your lab for my Dissertation Research Project and would like to continue my research project for Ph.D, after completion of my dissertation work, if an opportunity would be provided. May I request you to kindly spend few minutes of your valuable time on for my mail, for your kind consideration.
I’ll be grateful to you for an earliest reply.
Thanking you.
With Regards,
Manish Kumar Priydarshi
M.Sc Nanoscience(by Research)
AMITY Institute of Nanotechnology
AMITY University
At 11:44am on January 24, 2009,
Full member
Dr.Basavaraj K.Nanjwade
said…
Dear Carolyn Nichol,
Do you have PostDoc position in Pharmacy for me.
 
 
 

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