Featured Research

from universities, journals, and other organizations

Hope For Nano-Scale Delivery Of Medicine Using A Light Beam To Move Liquid Through Tiny Tubes

Date:
September 2, 2002
Source:
Arizona State University
Summary:
Medical researchers would like to use nano-scale tubes to push very tiny amounts of drugs dissolved in water to exactly where they are needed in the human body.

Medical researchers would like to use nano-scale tubes to push very tiny amounts of drugs dissolved in water to exactly where they are needed in the human body. The roadblock to putting this theory into practical use has been the challenge of building pumps small enough to do the job. In addition to the engineering challenge of building a nano-scale pump, there is the added complication of clogging by any biological molecule that can occur in valves small enough to fit a channel the size of bacteria.

Related Articles


The solution – discovered by researchers at Arizona State University – is to create a system that does not rely on mechanical parts.

The ASU team of scientists and engineers reports in the American Chemical Society journal Langmuir (Thursday, August 29, 2002) on a technique they developed to pull water up a tube tinier than a straw by shining a beam of light on the surface of the tube. This technological advance, referred to as photocapillarity, may one day find a use in nanotechnology applications, such as the targeted distribution of medicine in the body.

"As the size of capillaries or channels in devices shrinks, it becomes very difficult to control the movement of "liquid," says Dr. Antonio Garcia, Arizona State University Bioengineering professor. "The everyday use of mechanical valves and pumps becomes difficult in nanotechnology because making them tinier is a manufacturing challenge. Also, any real-life application would be prone to operational problems, such as clogging of the pump or valve by tiny molecules."

Garcia, and colleagues Devens Gust and Mark Hayes, professors in the ASU Department of Chemistry & Biochemistry, have combined their bioengineering and chemistry skills to build upon the research on light responsive molecules.

With proceeds from a National Science Foundation grant, the researchers found a way of attaching the molecules to the surface and structuring the surrounding surface to control the spread of water.

"When we shine light just beyond the visible range, the light responsive molecules attract water and trigger the advancement of water through the channel," says Garcia.

An added benefit to the research is the development of a science lab demonstration. By the end of the year, students and teachers can order inexpensive glass tubes prepared by the ASU researchers and a laboratory guide to exploring the phenomena.

"Our hope is that by making this lab kit available it will stimulate the creativity of the next generation of scientists and engineers who will routinely design new products using nanotechnology," Garcia says.


Story Source:

The above story is based on materials provided by Arizona State University. Note: Materials may be edited for content and length.


Cite This Page:

Arizona State University. "Hope For Nano-Scale Delivery Of Medicine Using A Light Beam To Move Liquid Through Tiny Tubes." ScienceDaily. ScienceDaily, 2 September 2002. <www.sciencedaily.com/releases/2002/08/020830071907.htm>.
Arizona State University. (2002, September 2). Hope For Nano-Scale Delivery Of Medicine Using A Light Beam To Move Liquid Through Tiny Tubes. ScienceDaily. Retrieved March 6, 2015 from www.sciencedaily.com/releases/2002/08/020830071907.htm
Arizona State University. "Hope For Nano-Scale Delivery Of Medicine Using A Light Beam To Move Liquid Through Tiny Tubes." ScienceDaily. www.sciencedaily.com/releases/2002/08/020830071907.htm (accessed March 6, 2015).

Share This


More From ScienceDaily



More Health & Medicine News

Friday, March 6, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Bupa Eyes India Healthcare Opportunities

Bupa Eyes India Healthcare Opportunities

Reuters - Business Video Online (Mar. 5, 2015) Bupa is hoping to expand in India&apos;s fast-growing health insurance market, once a rule change on foreign investment is implemented. The British private healthcare group&apos;s CEO tells Grace Pascoe why it&apos;s so keen on the new opportunity. Video provided by Reuters
Powered by NewsLook.com
Doctor in Your Pocket Is Getting Smarter

Doctor in Your Pocket Is Getting Smarter

Reuters - Business Video Online (Mar. 5, 2015) Mobile apps are turning smartphones into a personal doctors, with users able to measure heart rate, blood pressure and even blood sugar. But will it change our behaviour? Ivor Bennett reports from the Mobile World Congress in Barcelona. Video provided by Reuters
Powered by NewsLook.com
AbbVie Inks $21B Deal To Buy Cancer Drugmaker Pharmacyclics

AbbVie Inks $21B Deal To Buy Cancer Drugmaker Pharmacyclics

Newsy (Mar. 5, 2015) AbbVie announced Wednesday it will buy cancer drugmaker Pharmacyclics in a $21 billion deal. Video provided by Newsy
Powered by NewsLook.com
Toddlers Drinking Coffee? Why You Shouldn't Share Your Joe

Toddlers Drinking Coffee? Why You Shouldn't Share Your Joe

Newsy (Mar. 5, 2015) A survey of Boston mothers and toddlers found that 15 percent of two-year-olds drink coffee and 2.5 percent of 1-year-olds. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins