Prof. Uzi Landman, world expert in nanotechnology: "Mini jet engines will be the astronauts of the future; doctors will inject a medicinal substance directly into the patient's cell"
Alex Doron
Within three years, the weight of the satellites that will be in space will not exceed half
kg; they will be powered by nanojets, jet engines of atomic dimensions.
In laboratory simulations, the nanojets have already developed a speed of 400 meters
In the second.
Within a year, an American company will complete the construction of medical robots, less than 1
They are a millimeter in size, and in Germany the use of a magnetic field as a power source for the engine will be shown
Microscopic, which will "travel" inside the body.
In three to five years there will be push injections without needles: the medicinal substance
Will be launched in "Yaria"
Targeted to the target site in the body, to a certain cell - using a jet
Powerful, that will not injure you
Patient. The penetration of the jet will be through the cell membrane, the cells will not be damaged
around him; The medicinal substance will not disperse. The cell membrane will eventually heal itself
this procedure. This is also how genes will be injected.
This not-so-distant picture of the situation is outlined in an interview with "Maariv",
Israeli physicist Prof. Uzi Landman (57), head of the research center
Materials calculations at the Georgia Tech (George-Tech) in Atlanta,
Global expert on nanotechnology and winner of the prestigious Richard Feynman Prize
for the year ..2000
Landman's pioneering theoretical studies deal with their nature, their behavior
and the properties of materials from which the tiny devices, called machines, will be made
On the atomic scale - sizes measured in billionths of a meter, like a width
human hair The computer simulations built for this reveal an interaction between
the atoms into molecules. Materials scientists deepen your understanding with them
The "guts" of matter, on the microscopic scale.
"Small is different," emphasizes Prof. Landman, who was a guest of the university
Hebrew in Hanukkah
Her new center in Jerusalem for nanotechnology.
Landman: "This does not mean that nanotechnology will be based on new physics -
But the laws that will govern it are probably different from those that govern the world
around us that is going on at the macroscopic scale. This is a science that will present materials
New, ten times stronger than steel and tens of times lighter than steel. their behavior
Attests to the existence of other aggregation states than we are familiar with. Back in 1959
Nobel laureate Richard Feynman predicted that these materials would make it possible to compress the
All the books in the Library of Congress, on a device the size of a pinhead."
The science of nanotechnology is the "marriage" of physics with chemistry,
engineering, biology,
Computer science, electronics and optics - which you will bring to the world in years
upcoming products
Modern and amazing miniatures, for many areas of activity. at University
They are talking in Jerusalem
on new materials that will serve as building blocks for revolutionary sensing systems,
Circles
Integrated electronics, signal and image processing systems, nanomachines
and nanosystems
Their design will start from the stages of the atoms and their molecules; on nanocrystals,
nanowires,
Nano-transistors, nano-lasers and nano-devices for analysis, and for uses
other medical For example: the development started by the University of Utah in the USA
– A "microscopic submarine" that will sail
in the blood vessels of the body. The shot of a transgenic bacterium (neutralized from the toxin) like
Salmonella or
E-coli - will be used as a pushing engine. The mini-sub will carry medicine in a disc
tiny and signed,
Directly locate a target in the patient's body and only there will you release, to eliminate a cancerous tumor,
To repair a crack/fracture in a blood vessel.
Or: A robot will implant stem cells inside the heart muscle (planned by a university
Ohio, the hope
start clinical trials within five years!).
The nanotechnology will allow warriors in special battle suits to operate
In danger zones "in complete silence, like the sound of a butterfly landing on a leaf",
As an expert in nanotechnology expressed
from the US Army. The personal equipment will include a sensing system, the replacement clothing
Camouflage
As a chameleon, it automatically adapts to the environmental conditions; 60% light helmets
of those in use
Today, fabrics repair themselves in the event of a tear.
Some of the research projects in which Prof. Landman's laboratory is involved,
are financed by an army
The American air, are done in collaboration with MIT and the Central Research Institute of
Air Force, in Boston.
"A gold-plated nanojet exhaust nozzle and a polymer sheath for prevention
The appearance of a very thin, filmy blocking layer will allow smooth movement
powerful of the jet, without breaking too early, into drops. Already today
Chicken meat is cut in the USA with equipment that produces a (macroscopic) jet -
Instead of a butcher knife. Concrete and ceramic materials were also cut in the experiments
Fasteners.
"The research we carried out at George-Tech, using supercomputers, demonstrated Derech
Formation
The nanojets, the degree of stability of the jets, their compression and the breaking point of
the jet streams
to the droplets - and their evaporation point, under the influence of temperature."
In another study, it was discovered that when nickel is brought close to gold, the gold atoms jump
towards the nickel and a tiny crystalline thread forms, which elongates. It looks like
that dip a finger in Italian ice cream
Viscosity - and pull it out. The thread is very strong, behaves in a strange way
elasto-plastic.
To 'stretch' it requires a force 20 times greater than that required to stretch a gold bar. the wire
Conductor of electricity
Different than usual - without losing energy. The theoretical discovery, which was confirmed
In the experiment, help
For electronics engineers to develop diverse future equipment."
The newest study, which Prof. Landman reported to "Science", deals with
in cargo transportation
electricity in the DNA molecules. "Understanding these conduction processes will bring
to decipher the riddle
The physical mechanisms that cause DNA damage due to radiation - what
which causes the appearance
about 50% of the types of cancerous tumors". In addition to this in Prof. Landman's laboratory
in atlanta,
At the Technion and the new Institute for Nanotechnology in Jerusalem, researchers are investigating the use of
In DNA as molecular wires in electronic circuits.
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