Lecture

Laser Advanced Manufacturing: Concepts and Applications

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In course

MICRO-631: Selected topics in advanced manufacturing

The course aims to provide a comprehensive overview of ongoing advanced manufacturing research topics and an opportunity for students to investigate current research trends. ...

Description

This lecture introduces basic concepts in optics and light-matter interaction, covering absorption, refractive index, energy transfer with lasers, material response, and microtechnology applications. Examples include laser shot peening, 3D nanoprinting, cutting, joining, additive manufacturing, and laser eye surgery. It explores laser micromachining, weird phenomena like tilted structures and nanoparticle interactions, and the smallest lattice in the world. The lecture delves into quantum descriptions of photons, laser-matter interactions, and the essence of laser micromachining. It discusses the dynamics of energy transfer, the damped forced oscillator model, and the thermal transfer process. The lecture also touches on adaptive optics, femtosecond laser processing, and the potential of femtosecond lasers in creating engineered hydrophobic surfaces and self-organized nanostructures.

Official source

Related concepts (32)

Refractive surgery

Refractive surgery is optional eye surgery used to improve the refractive state of the eye and decrease or eliminate dependency on glasses or contact lenses. This can include various methods of surgical remodeling of the cornea (keratomileusis), lens implantation or lens replacement. The most common methods today use excimer lasers to reshape the curvature of the cornea. Refractive eye surgeries are used to treat common vision disorders such as myopia, hyperopia, presbyopia and astigmatism.

Laser surgery

Laser surgery is a type of surgery that uses a laser (in contrast to using a scalpel) to cut tissue. Examples include the use of a laser scalpel in otherwise conventional surgery, and soft-tissue laser surgery, in which the laser beam vaporizes soft tissue with high water content. Laser surgery is commonly used on the eye. Techniques used include LASIK, which is used to correct near and far-sightedness in vision, and photorefractive keratectomy, a procedure which permanently reshapes the cornea using an excimer laser to remove a small amount of the human tissue.

Nanotechnology

Nanotechnology, often shortened to nanotech, is the use of matter on atomic, molecular, and supramolecular scales for industrial purposes. The earliest, widespread description of nanotechnology referred to the particular technological goal of precisely manipulating atoms and molecules for fabrication of macroscale products, also now referred to as molecular nanotechnology. A more generalized description of nanotechnology was subsequently established by the National Nanotechnology Initiative, which defined nanotechnology as the manipulation of matter with at least one dimension sized from 1 to 100 nanometers (nm).

Optics

Optics is the branch of physics that studies the behaviour and properties of light, including its interactions with matter and the construction of instruments that use or detect it. Optics usually describes the behaviour of visible, ultraviolet, and infrared light. Because light is an electromagnetic wave, other forms of electromagnetic radiation such as X-rays, microwaves, and radio waves exhibit similar properties.

Eye surgery

Eye surgery, also known as ophthalmic surgery or ocular surgery, is surgery performed on the eye or its adnexa. Eye surgery is part of ophthalmology and is performed by an ophthalmologist or eye surgeon. The eye is a fragile organ, and requires due care before, during, and after a surgical procedure to minimize or prevent further damage. An eye surgeon is responsible for selecting the appropriate surgical procedure for the patient, and for taking the necessary safety precautions.

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