NANOTECHNOLOGY—TECHNOLOGY ON A MOLECULAR SCALE - Chemistry: Notable Research and Discoveries - page 66

1990s Nanomaterials begin appearing in sunscreens and

other products.

001 The U.S. government establishes the National

Nanotechnology Initiative.

00 University of California at Berkeley physicist Alex

Zettl and his colleagues build the first nanoscale
electronic motor.

00 Daniel S. Johnson, Michelle Wang, and their col-

leagues measure the force exerted by a helicase
molecule.

FurTHErrESourCES
Print and internet

Alper, Joe. “Self-Assembly: Getting Molecules to Put Themselves To-
gether to Make Nanoscale Devices.” Available online. URL: http://
nano.cancer.gov/news_center/monthly_feature_2005_jul.asp. Ac-
cessed May 28, 2009. This feature article, published in a newsletter
for the National Cancer Institute, offers an accessible tutorial on
self-assembly and supramolecular chemistry.
Benhkam, Bahareh, and Metin Sitti. “Bacterial Flagella-Based Propul-
sion and On/Off Motion Control of Microscale Objects.” Available
online. URL: http://scitation.aip.org/vsearch/servlet/VerityServlet?
KEY=APPLAB&smode=results&maxdisp=10&possible1=bacteria
l+lagella-based&possible1zone=article&OUTLOG=NO&viewabs
=APPLAB&key=DISPLAY&doc ID=1&page=0&chapter=0. Benh-
kam and Sitti attached microscopic plastic beads to bacteria, which
haul the beads under control of certain chemicals. Accessed Septem-
ber 24, 2009.
Berube, David M. Nano-Hype: The Truth Behind the Nanotechnology
Buzz. Amherst, N.Y.: Prometheus Books, 2005. People get excited
about new ideas and innovations—sometimes too excited. Although
enthusiasm helps push the boundaries of science, it can also raise
false hopes and unrealistic expectations, as well as ring alarm bells