scholarly journals Efficient Broadly Tunable Waveguide Lasers in Yb3+:CaF2 Produced by Deep Diamond Saw Dicing

2021 ◽  
Author(s):  
Pavel Loiko ◽  
Ludovic Gauthier-Manuel ◽  
Gurvan Brasse ◽  
Alain Braud ◽  
Abdelmjid Benayad ◽  
...  
Keyword(s):  
Waveguide Lasers ◽  
Diamond Saw ◽  
Tunable Waveguide

Channel waveguide lasers in bulk Tm:LiYF4 crystal produced by deep diamond-saw dicing

2020 ◽  
Author(s):  
Pavel Loiko ◽  
Ludovic Gauthier-Manuel ◽  
Gurvan Brasse ◽  
Esrom Kifle ◽  
Lauren Guillemot ◽  
...  
Keyword(s):  
Channel Waveguide ◽  
Waveguide Lasers ◽  
Diamond Saw

scholarly journals Channel waveguide lasers in bulk Tm:LiYF4 produced by deep diamond-saw dicing

2020 ◽  
Vol 28 (18) ◽  
pp. 26676
Author(s):  
Pavel Loiko ◽  
Ludovic Gauthier-Manuel ◽  
Gurvan Brasse ◽  
Esrom Kifle ◽  
Lauren Guillemot ◽  
...  
Keyword(s):  
Channel Waveguide ◽  
Waveguide Lasers ◽  
Diamond Saw

Diamond saw dicing of thulium channel waveguide lasers in monoclinic crystalline films

2019 ◽  
Vol 44 (7) ◽  
pp. 1596 ◽  
Author(s):  
Esrom Kifle ◽  
Pavel Loiko ◽  
Uwe Griebner ◽  
Valentin Petrov ◽  
Patrice Camy ◽  
...  
Keyword(s):  
Channel Waveguide ◽  
Waveguide Lasers ◽  
Crystalline Films ◽  
Diamond Saw

Electron Probe Microanalysis of Frozen Hydrated Kidneys, Isolated Cells, and Cultured Cells

1982 ◽  
Vol 40 ◽  
pp. 402-403 ◽  
Author(s):  
Claude Lechene
Keyword(s):  
Liquid Nitrogen ◽  
Electron Probe Microanalysis ◽  
Electron Probe ◽  
Cultured Cells ◽  
Liquid Nitrogen Temperature ◽  
Elemental Content ◽  
Isolated Cells ◽  
Renal Tubular Cells ◽  
Diamond Saw ◽  
Saw Blade

Electron probe microanalysis of frozen hydrated kidneysThe goal of the method is to measure on the same preparation the chemical elemental content of the renal luminal tubular fluid and of the surrounding renal tubular cells. The following method has been developed. Rat kidneys are quenched in solid nitrogen. They are trimmed under liquid nitrogen and mounted in a copper holder using a conductive medium. Under liquid nitrogen, a flat surface is exposed by sawing with a diamond saw blade at constant speed and constant pressure using a custom-built cryosaw. Transfer into the electron probe column (Cameca, MBX) is made using a simple transfer device maintaining the sample under liquid nitrogen in an interlock chamber mounted on the electron probe column. After the liquid nitrogen is evaporated by creating a vacuum, the sample is pushed into the special stage of the instrument. The sample is maintained at close to liquid nitrogen temperature by circulation of liquid nitrogen in the special stage.

Novel methods for demonstrating osseointegration of hydroxylapatite-coated titanium hip prostheses

1991 ◽  
Vol 49 ◽  
pp. 34-35 ◽  
Author(s):  
P. Frayssinet ◽  
J. Hanker ◽  
D. Hardy ◽  
B. Giammara
Keyword(s):  
Hip Prosthesis ◽  
Ethanol Concentration ◽  
Bone Matrix ◽  
Electron Microscopic Examination ◽  
Electron Microscopic ◽  
Hip Prostheses ◽  
Cellular Inclusions ◽  
Microscopic Studies ◽  
Diamond Saw ◽  
Plasma Sprayed

Prostheses implanted in hard tissues cannot be processed for electron microscopic examination or microanalysis in the same way as those in other tissues. For these reasons, we have developed methods allowing light and electron microscopic studies as well as microanalysis of the interface between bone and a metal biomaterial coated by plasma-sprayed hydroxylapatite(HA) ceramic.An HA-coated titanium hip prosthesis (Corail, Landos, France), which had been implanted for two years, was removed after death (unrelated to the orthopaedic problem). After fixation it was dehydrated in solutions of increasing ethanol concentration prior to embedment in polymethylmethacrylate(PMMA). Transverse femur sections were obtained with a diamond saw and the sections then carefully ground to a thickness of 200 microns. Plastic-embedded sections were stained for calcium with a silver methenamine modification of the von Kossa method for calcium staining and coated by carbon. They have been examined by back-scatter SEM on an ISI-SS60 operated at 25 KV. EDAX has been done on cellular inclusions and extracellular bone matrix.

TEM study of order, structure and defects of β and martensite in Cu-Al-Mn shape memory alloys

1990 ◽  
Vol 48 (4) ◽  
pp. 188-189
Author(s):  
J.M. Guilemany ◽  
F. Peregrin
Keyword(s):  
Shape Memory ◽  
Orthophosphoric Acid ◽  
Isopropyl Alcohol ◽  
Metastable Phase ◽  
Characteristic Temperature ◽  
Ethanol Solution ◽  
Order Structure ◽  
Thin Foils ◽  
Polycrystalline Alloys ◽  
Diamond Saw

The shape memory effect (SME) shown by Cu-Al-Mn alloys stems from the thermoelastic martensitic transformation occuring between a β (L2,) metastable phase and a martensitic phase. The TEM study of both phases in single and polycrystalline Cu-Al-Mn alloys give us greater knowledge of the structure, order and defects.The alloys were obtained by vacuum melting of Cu, Al and Mn and single crystals were obtained from polycrystalline alloys using a modified Bridgman method. Four different alloys were used with (e/a) ranging from 1.41 to 1.46 . Two different heat treatments were used and the alloys also underwent thermal cycling throughout their characteristic temperature range -Ms, Mf, As, Af-. The specimens were cut using a low speed diamond saw and discs were mechanically thinned to 100 μm and then ion milled to perforation at 4 kV. Some thin foils were also prepared by twin-jet electropolishing, using a (1:10:50:50) urea: isopropyl alcohol: orthophosphoric acid: ethanol solution at 20°C. The foils were examinated on a TEM operated at 200 kV.

Cross-sectional TEM specimen preparation from magneto-optical disk by ultramicrotomy

1993 ◽  
Vol 51 ◽  
pp. 236-237
Author(s):  
F. Shaapur ◽  
M.J. Kim ◽  
Seh Kwang Lee ◽  
Soon Gwang Kim
Keyword(s):  
System Development ◽  
Thin Foil ◽  
Specimen Preparation ◽  
Material System ◽  
Cross Sectional ◽  
Protective Layers ◽  
New Material ◽  
Diamond Saw ◽  
Original Production ◽  
Thick Medium

TEM characterization and microanalysis of the recording media is crucial and complementary to new material system development as well as quality control applications. Due to the type of material generally used for supporting the medium, i.e., a polymer, conventional macro- and microthinning procedures for thin foil preparation are not applicable. Ultramicrotorny (UM) is a viable option and has been employed in previous similar studies. In this work UM has been used for preparation of XTEM samples from a magneto-optical (MO) recording medium in its original production format.The as-received material system consisted of a 4-layer, 2100 Å thick medium including a 300 Å TbFeCo layer enveloped by silicon nitride protective layers supported on a 1.2 mm thick × 135 mm (5.25 in.) diameter polycarbonate disk. Recording tracks had an approximate pitch of 1.6 μm separated by 800 Å deep peripheral grooves. Using a Buehler Isomet low-speed diamond saw, 1 mm wide and 20 mm long strips were cut out of the disk along the recording tracks.

A Novel Approach to Front-Side Deprocessing for Thinned Die after Backside Failure Isolation

2003 ◽  
Author(s):  
Dat Nguyen ◽  
Cuong Phan ◽  
Jeff Conner ◽  
Martin Smith ◽  
John Drummond
Keyword(s):  
Front Side ◽  
Ball Grid Arrays ◽  
Safe Handling ◽  
Flip Chips ◽  
Novel Approach ◽  
Diamond Saw ◽  
Reconstructed Sample

Abstract This paper describes a novel approach for safe handling of the thinned die from the front; a technique that can also be successfully applied to preserve cracked die. The discussion provides details on the characteristics and processes involved in backside reconstruction, thinned die reconstruction, and front-side deprocessing of thinned die. The finished backside reconstruction sample was cross-sectioned for examination using a diamond saw. After 6 hours of bake, no cracking of the thinned die was observed. Front-side deprocessing was then applied to the backside reconstructed sample. The sample remains intact. The technique has proven to be easily applied and highly reliable, and provides a solution for front-side deprocessing for both high pin count ball grid arrays and flip chips.

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