SKU: 93082455584

Hydroxylated MWCNTs (short)10-20 nm

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Description

Hydroxylated MWCNTs (short)10-20 nmProduct Name NameHydroxylated MWCNTs short: 0 20 nm Product Overview Carbon nanotubes are simple substances composed of carbon atoms and can be regarded as hollow tubular structures formed by the curling of graphene. On the surface of carbon nanotubes, the carbon atoms are bonded to each other in the form of sp2 hybrid orbitals, which are arranged as hexagonal graphite layers. In theory, this regular hexagonal structure is perfectly evenly distributed

Product Name

Name:Hydroxylated MWCNTs (short:0-20 nm


Product Overview

Carbon nanotubes are simple substances composed of carbon atoms and can be regarded as hollow tubular structures formed by the curling of graphene. On the surface of carbon nanotubes, the carbon atoms are bonded to each other in the form of sp2 hybrid orbitals, which are arranged as hexagonal graphite layers. In theory, this regular hexagonal structure is perfectly evenly distributed over the entire surface of the carbon nanotubes. Topologically, the common structure and properties of graphene and carbon nanotubes are one of the important factors for their similarity. However, due to the curvature of the graphite layer in the carbon nanotubes, coupled with the defects that may occur during the growth process, the sp3 hybrid phenomenon may occur in the six-membered ring structure on the surface of the carbon nanotubes, resulting in the emergence of five-membered rings or seven-membered rings. Carbon nanotubes can be divided into single-walled carbon nanotubes, double-walled carbon nanotubes and multi-walled carbon nanotubes according to the graphite sheets with different number of layers.

There are many kinds of preparation processes and methods for carbon nanotubes, and carbon nanotubes with corresponding properties and structures can be prepared by different methods. At present, the main methods for preparing carbon nanotubes include graphite arc method, laser graphite evaporation method and chemical deposition method. Chemical deposition method has the advantage of large-scale production and is widely used at present.


Technical Parameter

 

Color:black

-OH Content:3.06wt%(For reference only)

OD:0-20nm

ID:-10nm

Purity:gt;95 %

Length:.5-2um

True density: ~2.1 g/cm3

EC:>100s/cm


Product characteristics

High purity: Most of the metal impurities are removed under high temperature treatment of the carbon tube.

It has good flexibility and elasticity and can withstand large deformation without breaking. For example, in some micro-mechanical parts, complex movements can be achieved using their flexibility.

Electrical properties:

It has good electrical conductivity, and the electrical conductivity can be close to copper.

Exhibit unique quantum conductivity properties. For example, in nanoelectronic devices, their conductance characteristics contribute to precise current control.

Thermal properties:

The thermal conductivity is very high and can effectively conduct heat.

Good thermal stability, can still maintain the stability of structure and performance in high temperature environment. This makes it a potential application in highly efficient cooling materials, such as the cooling components of high-power electronic devices.

Chemical properties:

High chemical stability, not easy to react in most chemical environments.

The surface can be chemically modified to meet different application requirements. For example, it can be better dispersed in certain solvents or substrates through chemical modifications.

Optical properties:

It has unique optical absorption and emission characteristics in the near infrared and visible regions.

It can be used to make optical sensors and light-emitting devices.

 

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SKU: 93082455584

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4.1 ★★★★★
Based on 11 reviews
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Verified Purchase
Daniel Isaiah Joseph
Grantham, US
★★★★★ 4
Kurzweil downplays risks because he wants to live forever
Format: Hardcover
I bought this book because I believe Kurzweil's predictions, particularly about computation acceleration, are eye-opening. However, even though The Singularity is Nearer is based on A.I. development, it devotes a lot of time to the social and biological implications of the technology, according to Kurzweil. While I am convinced that his foresight is generally correct with regard to technological advancement, I am not persuaded that his largely rosey description of the future is correct. Even if A.I. eventually results in certain positive outcomes, I think Kurzweil significantly underestimates the social disruption that would occur before society gets to those ideal results, if it ever does. The revolution, or its aftermath, could be so catastrophic that the disruption reaches a point of no return. In my opinion, Kurzweil underestimates possibilities like this. He seems eager to get to positive biological outcomes, particualrly in relation to nanotechnology and the aging process. In online interviews with Kurzweil, and in this book, the thought kept coming back to me that Kurzweil's ultimate objective is to live forever. I have heard him say that he is going to extremes in attempt to live a decade or two longer so that he can benefit from advanced A.I., perhaps through digitally preserving his consciousness. These ideas reminded me of Ecclesiastes 3:11, which says that God "has put eternity into man’s heart." Even if Kurzweil's predictions about A.I., society, and even biology are correct, I don't think he will find what he is looking for. In my view, his search is ultimately about God. A few note to lay readers: Within the first 20 pages of the book, Kurzweil inserts a sophisticated 8-page discussion on neutral networks. Don't put the book down in this section! It should have been an appendix. Also, the last chapter is called "Dialogue with Cassandra." It's an interesting interview, but there is no preface to the conversation at the beginning of the chapter. I double-checked the introduction and the notes in the back of the book and couldn't find out more information about what I was reading or who Cassandra is. I must have missed something. Nevertheless, a quick Google search suggests that Cassandra is fictional. Perhaps this is a pop-culture reference I don't know about. Still, it's an interesting read, even if a little bizarre.
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Reviewed in the United States on August 8, 2025
M
Verified Purchase
Michael E. Martin
Lake Worth, US
★★★★★ 5
A Thought Provoking Page-turner
Format: Hardcover
To have a sense of what we can expect in the future, we have to examine the trends of the past. That is the foundation of this very readable book. Kurzweil does a thorough job of presenting historical data in graphs and tables and explaining how the trends point to what we can expect in the next quarter century. You’d think this is all technology focused, but it is much more than that. He looks at trends in violent crime (declining), health and longevity (improving), poverty (declining) and other factors and explains how social trends enhance the development of technology and in turn how technology has a positive impact on society. This is an excellent choice for book club discussions. There’s enough detail about advancing technology to help the layperson to understand it and at the same time encourage further research. Since it a prediction of the future, one can make a argument in support of his conclusions or suggest some alternative paths. I can envision some spirited discussions. When you think about, looking to the future is an accelerating trend in itself. The Singularity is Nearer and Kurzweil’s other books are both the catalyst and result of that trend.
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Reviewed in the United States on September 6, 2024
B
Verified Purchase
Bill - CA
Boise, US
★★★★★ 5
AI is here and this is one of the books you should read
Format: Hardcover
If you not in tune with the changes coming to the world with the advent of AI, read this book. The front end can be a bit technical and tough to read, but the back 2/3 of the book are eye opening. A lot of change is coming over the next 5 years, most are great for the world. There will be change for all of us and those that aren’t aware and prepared could find it unsettling. While this is a very good book, a person should be reading and listening to blogs weekly to keep up with the changes to our lives going forward. One book on the subject, while good, isn’t enough.
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Reviewed in the United States on July 30, 2025
W
Verified Purchase
w+
Alexandria, US
★★★★★ 3
Good points, but too verbose and in the clouds at times.
Format: Kindle
This book has great points and analysis of trends, and a sensible outlook of what they might lead to. If you already understand the main ideas in this book, it's a good refresher and will solidify your current understanding, but may not really lead to any new "mindblowing" revelations. At times, his head is too in the clouds, and his age shows with predictions that read like bad 1960s sci-fi with things like "computorium" "gray goo" and "nanobots". While his overall points stand strong, some specific technologies he thinks will take off don't seem to have any basis or proof of concept in the real world and might be dead in the water, think "solar freakin roadways" style. He is also very full of himself, repeatedly gloating to the reader of all the "predictions" he made over the years that came true. The biggest weakness of this book is by god does he need an editor, it is way too verbose because the information is not organized well and he repeats himself A LOT. The chapters read like independent blog posts rather than a book due to how repetitive some of his points and information is. Often factoids and paragraphs are bizarrely repeated nearly verbatim pages later. But overall, it's a solid read and those uninitiated to the ideas in this book should absolutely heed their importance.
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Reviewed in the United States on January 10, 2025
C
Verified Purchase
chris bickford
Birmingham, US
★★★★★ 5
Ray at best
Format: Hardcover
Great ai know how
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026

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