Revealing the reason behind jet formation at the tip of laser optical fiber

Revealing the Reason Behind Jet Formation at the Tip of Laser Optical Fiber
The observation of water jets in experiments and the schematics of the jet formation mechanism. Credit: Junnosuke Okajima, Tohoku University

When an optical fiber is immersed in liquid, a high-temperature, high-speed jet is discharged. Researchers expect this to be applied to medical treatment in the future. Now, a research team from Russia and Japan has explored this phenomenon further and revealed the reasons behind the jet formation.


Lasers using a thin optical fiber and combined with an endoscope and catheter can be easily transported into deep areas of the body or inside blood vessels. Traditionally, affected areas or lesions are removed by generating heat inside the tissue through laser absorption—a process known as the photothermal effect.

Yet, hydrodynamical phenomena, such as microbubble formation or high-speed jet generation from the optical fiber, show immense medical promise.

The process of jet formation happens when the laser is irradiated to the water, causing

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Revealing the reason behind jet formation at the tip of laser optical fiber — ScienceDaily

When an optical fiber is immersed in liquid, a high temperature, high speed jet is discharged. Researchers expect this to be applied to medical treatment in the future. Now, a research team from Russia and Japan has explored this phenomenon further and revealed the reasons behind the jet formation.

Lasers using a thin optical fiber and combined with an endoscope and catheter can be easily transported into deep areas of the body or inside blood vessels. Traditionally, affected areas or lesions are removed by generating heat inside the tissue through laser absorption — a process known as the photothermal effect.

Yet, hydrodynamical phenomena, such as microbubble formation or high-speed jet generation from the optical fiber, show immense medical promise.

The process of jet formation happens when the laser is irradiated to the water, causing the water to boil and a vapor bubble to form at the tip of the optical

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The Air Force’s Secret New Fighter Jet Could Pack This Highly Classified Tech

From Popular Mechanics

In September, the U.S. Air Force shocked the world when it announced it had secretly designed, built, and tested a new fighter jet—all in the astonishingly short span of just one year.

✈ You love badass planes. So do we. Let’s nerd out over them together.

The secret new fighter jet—if it’s even a new “fighter” at all—is part of the Next Generation Air Dominance (NGAD) program, an Air Force project designed to supplement and eventually replace the F-22 Raptor. The Air Force has identified five major new technologies it believes will be necessary for the program. But what are they?

A new Congressional Research Service (CRS) report on NGAD gives a quick rundown of the program. The secret new fighter jet, which Air Force acquisition Secretary Will Roper officially announced on September 15, is just part of a program that will likely include crewed and uncrewed

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What are the chances Boeing will build a new jet in Washington state again?

“You’re going to have a lot of governors tripping over themselves to offer incentive packages, and Boeing’s going to take advantage of that,” aviation experts say.

EVERETT, Wash. — This week’s decision to move all 787 Dreamliner production out of Everett marks the first time Boeing has moved the commercial airliner assembly that started in Puget Sound out of Washington state.

Yes, other jets have gone away, the 707, 727, 757 — and by 2022, the Queen of the Skies, the 747, will also be gone.

But those programs did not fly away. Rather, those jets aged out as technology and demand changed.

In the case of the 787, Boeing moved its entire production line to its factories in South Carolina.

So, what about the next airplane, whether Boeing calls it the 797 or something else?

“I think Washington is still the incumbent, still the best place to build a

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F-15EX jet fighter technology | Military & Aerospace Electronics

WASHINGTON – As was widely reported in July, the U.S. Air Force has decided to acquire many F-15EX jet fighter aircraft over the next several years. The F-15EX initially was expected to replace the elderly F-15 C/D, but the latest reports indicate that it also may replace the Air Force’s fleet of F-15E jet fighter-bombers. Kris Osborn at Warrior Maven reports. Continue reading original article

The Military & Aerospace Electronics take:

28 Sept. 2020 — Essentially, the F-15EX concept binds generations of technological innovation into the 1970-vintage F-15 airframe. The F-15EX uses the classic F-15 frame but incorporates a host of technological improvements developed over the course of the last thirty years.

Serial production of the F-15, driven largely by foreign sales in recent years, enables the integration of new technology and weapons and keeps the workforce and the manufacturing facilities fresh.

The logic of replacing the F-15E (alongside the

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