scholarly journals Novel Method for Milk Sterilization Using Visible Laser System

2020 ◽  
Vol 18 (1) ◽  
pp. 1-4
Author(s):  
Adnan W. Al Mudhfar ◽  
Walaa Sabri ◽  
Ayad J. Al-Khafaji
Keyword(s):  
Laser System ◽  
Visible Laser ◽  
Novel Method

Fabrication of Three-Dimensional SU-8 Microstructures for MEMS Applications

2004 ◽  
Author(s):  
Hui Yu ◽  
Biao Li ◽  
Yi Zhao ◽  
Xin Zhang
Keyword(s):  
Thick Film ◽  
Laser System ◽  
Three Dimensional ◽  
Scanning Laser ◽  
Direct Write ◽  
Mems Devices ◽  
Depth Processing ◽  
Novel Method

In this paper, a novel method to realize three-dimensional microstructures is presented. The presented technology is based on a direct write technique using a scanning laser system to pattern thick-film SU-8. This technique combines the best features of photolithography techniques in multi-layer processing with the versatility of existing 3D prototyping technologies. It enables laser pulsing spot-by-spot for both in-plane and in-depth processing. The results presented here represent the first step towards the realization of categories of MEMS devices with mechanical, optical, and/or biological functionalities.

scholarly journals Discovery of Several New Families of Saturable Absorbers for Ultrashort Pulsed Laser Systems

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Syed Asad Hussain
Keyword(s):  
Modulation Depth ◽  
Laser System ◽  
Ultrashort Pulses ◽  
Cost Effective ◽  
Saturable Absorbers ◽  
A Value ◽  
Plastic Materials ◽  
Laser Systems ◽  
Novel Method ◽  
Mode Locked Laser

AbstractSaturable Absorber (SA) is a key element of any passive mode-locked laser system to provide ultrashort laser system. So far various materials have been proposed that could be used for this purpose. However, the field is still looking for new ways to make the fabrication process easier and cost-effective. Another challenge in testing mode-locked laser systems using various SA samples is the lack of knowledge in preparing these by laser physicists given this is outside their remit of expertise. In this study, we have proposed a novel method to produce these SAs from plastic materials and glycol. Our new method relies upon increase in thickness up to a value where the modulation depth is enough to give stable ultrashort pulses. Although we have shown this method for four materials; similar approach could be applied to any material. This will open the door of unlimited families of SAs that could be easily prepared and applied without any prior knowledge in material sciences.

A Novel Method for Laser Suture Lysis Using Multispot Laser System

2017 ◽  
Vol 26 (4) ◽  
pp. e163-e164 ◽  
Author(s):  
Assaf Kratz ◽  
Ivan Goldberg ◽  
Jaime Levy ◽  
Boris Knyazer ◽  
Tova Lifshitz
Keyword(s):  
Laser System ◽  
Laser Suture Lysis ◽  
Novel Method

A multi-wavelength (u.v. to visible) laser system for early detection of oral cancer

2015 ◽  
Author(s):  
S. P. Najda ◽  
P. Perlin ◽  
M. Leszczyński ◽  
T. J. Slight ◽  
W. Meredith ◽  
...  
Keyword(s):  
Oral Cancer ◽  
Early Detection ◽  
Laser System ◽  
Visible Laser ◽  
Multi Wavelength

Heat Absorbing Rate in Laser Drilling of YG8 Alloy

2010 ◽  
Vol 97-101 ◽  
pp. 4164-4167
Author(s):  
Xu Yue Wang ◽  
Wen Ji Xu ◽  
Lian Ji Wang ◽  
Jun Wang ◽  
Yan De Liang
Keyword(s):  
Laser Beam ◽  
Laser System ◽  
Laser Drilling ◽  
The Novel ◽  
Spatial Mode ◽  
Drilling Temperature ◽  
Research Outcome ◽  
Novel Method ◽  
Relationship Of ◽  
The Relationship

Based on a principle of laser drilling size and the roundness copied with respect of laser spatial mode, heat absorbing rate for laser drilling of YG8 is presented in theory and application. The mathematical models are then developed. The relationship of heat absorbing rate compared to the original absorbing rate is thus derived that is A = T +A0. It shows that heat absorbing rate to laser beam increases linearly with drilling temperature. The research outcome is used to optimize preheating process in which the novel method improves laser drilling precision from 0.03mm of primitive laser system to 0.01mm under the condition of heat absorbing.

scholarly journals Novel method to reduce the transverse sensitivity of granular thin film strain gauges by modification of strain transfer

2020 ◽  
Vol 9 (2) ◽  
pp. 219-226
Author(s):  
Maximilian Mathis ◽  
Dennis Vollberg ◽  
Matthäus Langosch ◽  
Dirk Göttel ◽  
Angela Lellig ◽  
...  
Keyword(s):  
Thin Film ◽  
Laser System ◽  
Strain Gauges ◽  
Gauge Factor ◽  
Transverse Strain ◽  
Metal Foil ◽  
Granular Film ◽  
Strain Transfer ◽  
Transverse Sensitivity ◽  
Novel Method

Abstract. Strain gauges based on polyimide carrier foils and piezoresistive granular thin films are highly sensitive to strain. Unlike conventional metal foil, granular film strain gauges also have a pronounced sensitivity to strain acting in the transverse direction. A novel method that allows for the modification of the strain transfer is proposed and proven experimentally. The method is based on the creation of stand-alone polyimide paths, on top of which the piezoresistive thin film is located. In this way, the granular film hardly receives any transverse strain; hence, the transverse sensitivity is drastically reduced. A picosecond laser system can be used for both patterning of the thin film and for controlled ablation of polyimide in order to generate well-defined high path structures. The working principle of the method is demonstrated by simulation, followed by an experimental verification using measurements of the transverse gauge factor. Furthermore, the output signal of force transducers may be increased using granular thin film strain gauges of reduced transverse sensitivity.

The removal and morphology of intact biofilms from implanted venous access devices

1995 ◽  
Vol 53 ◽  
pp. 1020-1021
Author(s):  
M.A. Gregory ◽  
G.P. Hadley
Keyword(s):  
Patient Selection ◽  
Surgical Oncology ◽  
Venous Access ◽  
Common Procedure ◽  
Indwelling Catheters ◽  
Careful Patient ◽  
Novel Method ◽  
The Subject ◽  
Vascular Catheters ◽  
Venous Access Devices

The insertion of implanted venous access systems for children undergoing prolonged courses of chemotherapy has become a common procedure in pediatric surgical oncology. While not permanently implanted, the devices are expected to remain functional until cure of the primary disease is assured. Despite careful patient selection and standardised insertion and access techniques, some devices fail. The most commonly encountered problems are colonisation of the device with bacteria and catheter occlusion. Both of these difficulties relate to the development of a biofilm within the port and catheter. The morphology and evolution of biofilms in indwelling vascular catheters is the subject of ongoing investigation. To date, however, such investigations have been confined to the examination of fragments of biofilm scraped or sonicated from sections of catheter. This report describes a novel method for the extraction of intact biofilms from indwelling catheters.15 children with Wilm’s tumour and who had received venous implants were studied. Catheters were removed because of infection (n=6) or electively at the end of chemotherapy.

{10} edge dislocations in YSZ films grown on (100)MgO by PLD

1994 ◽  
Vol 52 ◽  
pp. 530-531
Author(s):  
Jason R. Heffelfinger ◽  
C. Barry Carter
Keyword(s):  
Thin Films ◽  
Semiconductor Lasers ◽  
Vapor Deposition ◽  
Substrate Surface ◽  
Laser System ◽  
Average Energy ◽  
Target Material ◽  
Chemical Vapor ◽  
Buffer Layers ◽  
Organic Chemical

Yttria-stabilized zirconia (YSZ) is currently used in a variety of applications including oxygen sensors, fuel cells, coatings for semiconductor lasers, and buffer layers for high-temperature superconducting films. Thin films of YSZ have been grown by metal-organic chemical vapor deposition, electrochemical vapor deposition, pulse-laser deposition (PLD), electron-beam evaporation, and sputtering. In this investigation, PLD was used to grow thin films of YSZ on (100) MgO substrates. This system proves to be an interesting example of relationships between interfaces and extrinsic dislocations in thin films of YSZ.In this experiment, a freshly cleaved (100) MgO substrate surface was prepared for deposition by cleaving a lmm-thick slice from a single-crystal MgO cube. The YSZ target material which contained 10mol% yttria was prepared from powders and sintered to 85% of theoretical density. The laser system used for the depositions was a Lambda Physik 210i excimer laser operating with KrF (λ=248nm, 1Hz repetition rate, average energy per pulse of 100mJ).

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