Opto Laser

What is a transient thermoelastic expansion ?

Well, I have to explain how this biomedical device works: Laser Opto-Acoustic.
Opto-acoustic imaging technology combines optics and acoustics with a goal of improving the accuracy of the cancer diagnosis without the use of ionizing radiation (x-ray). The process starts by illuminating the tissue with laser light of specific wavelengths. Tumors preferentially absorb the light over normal tissue and become slightly heated. A transient thermoelastic expansion causes a tumor to emit a pressure (acoustic) wave. This acoustic wave is then detected by an array of sensors positioned around the periphery of the area of study.

Ok, I understand everything except the tissue-light interaction that cause the acoustic wave to be emitted. The tissue absorbs the laser light, which is energy. It heats, therefore it expands. Now, why does the energy is emited by acoustic waves ? Why not light ? 
Can you help me ? Thank you so much.

It will not emit light because it is far too cold.
The sudden expansion pushes on whatever is near it, and this pushing then travels as an acoustic wave.

USB TO RS422/RS485 OPTO-ISOLATOR $145.99 USB TO RS422/RS485 OPTO-ISOLATOR

BBE Opto Stomp Pedal $99.99 BBE Opto Stomp Pedal

Bbe Opto Stomp Pedal $99.99 BBE Opto Stomp Pedal

Opto-injection into Single Living Cells by Femtosecond Nir Laser $62.4 No Synopsis Available

Opto-Isolator surge suppressor $129.99 Black Box Opto-Isolator - Surge suppressor

Opto-Isolator II - Surge suppressor $281.99 Black Box Opto-Isolator II - Surge suppressor

Chameleon Labs 7802 Stereo Opto Tube Compressor $769 Chameleon Labs 7802 Stereo Opto Tube Compressor

Laser Beam Scanning Vol. 8 : Opto-Mechanical Devices, Systems and Data Storage Optics $253.45 No Synopsis Available

Elation Opto Branch 4 $299.99 Elation Opto Branch 4 19" rm. 4-way DMX distributor - 1 DMX Input, 4 DMX Outputs, 1 DMX Thru 3 & 5 pin XLR, 1 space. 4-Way DMX Distributor Elation Opto Branch 4 Features: 4-way DMX distributor 19" rack mountable - single space 1 x DMX input, 4 x DMX outputs & 1 DMX thru All outputs are electronically & optically isolated 3 & 5 pin XLR DMX connectors Data + & Data - L.E.D. indicators Linkable with other OPTO BRANCH 4S via 3 or 5 pin XLR Link out/terminate button for troubleshooting 50mA internal fuse Dimensions: 19"L x 5.5"W x 1.73"H Weight: 5.29 lbs Power input: 120VAC ~ 60Hz Internal fuse: 05A 250V (5x20m) Get Your Elation Opto Branch 4 Today!

Opto-Isolator USB - hub - 4 ports - desktop $322.99 Black Box Opto-Isolator USB - Hub - 4 x USB - desktop

Opto-Isolator USB to RS-232 - serial adapter $149.99 Black Box Opto-Isolator USB to RS-232 - Serial adapter - USB - RS-232

High-Speed Opto-Isolator surge suppressor $199 Black Box High-Speed Opto-Isolator - Surge suppressor

Industrial Opto-Isolated RS-232 - repeater $279.99 Black Box Industrial Opto-Isolated RS-232 - Repeater - 2 ports - serial RS-232 - 9 pin D-Sub (DB-9) / 9 pin D-Sub (DB-9) - DIN rail mountable - up to 100 ft

BBE OPTO STOMP OPTICAL COMPRESSOR $99.99 The Opto Stomp is a transparent optical compressor that provides a wide range of soft-knee compression effects, reminiscent of the best vintage compressors made in the ?60s. Height: 6 Width: 0 Weight: 3

Account limit of 2104 requests per hour exceeded.

Opto Power 15watt 830nm FC laser diode

Instrument Industry

 For decades, Wang Daheng the development of China's optical industry has made an outstanding contribution. He was personally involved in the success of China's first furnace melting of optical glass, leading the successful development of large-scale film theodolite, 3000 times / sec high-speed camera, high-precision gyroscopes, ruby lasers.

More importantly, he successfully created his own hands for a number of China's optical and scientific research equipment, manufacturing and teaching base, including Changchun Institute of Optics and Fine Mechanics and Physics, Shanghai Optics and Fine Mechanics, Chengdu Opto-Electronics, Anhui Optics and Fine Mechanics , Changchun University of Technology, Harbin University of Science and a number of national laboratories is a prominent representative. These bases for decades for our apparatus of science and innovation has made tremendous contributions to the development and nurturing a large number of outstanding talent.

"Science and technology are primary productive forces, and modern instruments and equipment is one of the first three elements of productivity."

"China's science and technology should be the same as the dragon off, this dragon's head of information technology, instrumentation is the dragon's eyes, to touch to the picture."

This is one in 70 years of optics and equipment of the old science instrument industry scientists to the wonderful views. The scientist is already 93 years old, but still deeply concerned about and reflect on our country's independent innovation and scientific instrument development path of a famous scientist Wang Daheng.

June 29, China Instrument and Control Society held in conjunction with relevant units in the Great Hall of People, "Wang Daheng the important thinking of Scientific Instruments Academy of Sciences report," in commemoration of his scientific career, especially in optics and equipment, and the 70th anniversary of science.

Liu Yanhua, Vice Minister of Science and Technology attended the report spoke highly of Wang Daheng of scientific instruments made outstanding contributions to career development, and called on industry to learn develop Wang Daheng pioneering spirit, the courage to sacrifice, truth-seeking and pragmatic spirit and noble virtues of science, focus on scientific instruments and other scientific tools to promote independent innovation, and vigorously promote the importance of cohesion and dissemination of scientific thinking, attach great importance to the scientific method have been summarized and training for promotion, effective from the source to promote innovation-based nation-building.

70 years chasing "light" road

Many people know that Wang Daheng Academician of national "863 Program" one of the initiators and the "missiles plus one satellite," the hero. In fact, as China's Applied Optics and Optical Engineering scientists, Wang Daheng optical industry recognized academic founder, pioneer and organizational leadership, but also in other areas are also highly successful.

Wang Daheng 1936, graduated from Tsinghua University, Department of Physics, 1938, went to study in the UK to study technology, optics, ever since he began research on optical glass; in 1942, he was employed in Birmingham, England Masaji glass company engaged in the study of optical glass , until returning in 1948.

For decades, Wang Daheng the development of China's optical industry has made an outstanding contribution. He was personally involved in the successful melting furnace of China's first optical glass, leading the successful development of large scale film theodolite, 3000 times / sec high-speed camera, high-precision gyroscopes, ruby lasers. More importantly, he successfully created his own hands for a number of China's optical and scientific research equipment, manufacturing and teaching base, including Changchun Institute of Optics and Fine Mechanics and Physics, Shanghai Optics and Fine Mechanics, Chengdu Opto-Electronics, Anhui Optics and Fine Mechanics, Changchun University of Technology, Harbin University of Science and a number of national laboratories is a prominent representative. These bases for several decades, the scientific instrument innovation and development of our country has made tremendous contributions and train a large number of outstanding talent.

Now, has entered a ripe old age also adhere to the study of Wang Daheng every day and work there. Read the instrument in optical projection monitor screen effortlessly, tirelessly read newspapers and professional journals, concerned about the domestic and international events and Technology of China, especially China Optics and optical science and technology progress in the world, not to the higher-ups made important recommendations.

Scientific instruments to promote industrial development

In a fairly long historical period, the instrument is seen as machines, on the machinery manufacturing sector management. Because of its scale of production, output value and the market is not often enough to attract any attention. These factors affect and hinder the rapid development of instrumentation.

Wang Daheng on the development of science and innovation instrument is an important idea, he considered that science is a new instrument of science, developing very fast, but also with a lot of interdisciplinary and maintain innovation and development, strengthening academic exchanges is essential.

In order to speed up the development of instrumentation industries, Wang Daheng in different historical periods, using a variety of occasions, on many occasions to the State and the government to speed up the development of instrumentation proposals. Many of the recommendations have been adopted by the Government to promote and accelerate the development of China's instrument industry has played an important role.

Liu Yanhua said that a long time, Science and Technology attaches great importance to China's Wang Daheng academicians, scientists, scientific instrument development proposals and opinions, the work of independent innovation of scientific instruments will be placed in scientific and technological work in an important position, scientific instruments and equipment innovation has achieved some success.

The National Natural Science Foundation Fellowship, former deputy director of Jin Guofan that Wang Daheng on "measurement technology is an important component of information technology is a source of information technology", "instrumentation industries belonging to the information industry", "instrumentation for industrial production, scientific research , national defense building and social life, playing a 'multiplier', 'vanguard', 'combat' and 'materialization of judges' and the important role of "a series of important ideas for the instrumentation industry development is the name refers to the road, drums the gas.

"10 years, the output value of China instrument industry more than 20% annual growth rate of the rapid growth of Instrument Science and Industry to face the excellent situation, the impact of the important thinking of Wang Daheng Academy contributed." Guofan said.
About the Author

I am a professional editor from
China Product
, and my work is to promote a free online trade platform.
http://www.himfr.com/ contain a great deal of information about

wilson tennis racket
,
wilson tennis racquets

welcome to visit!