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Urus-28 — Urus micrographie 8

Published: 2011-05-08 10:20:50 +0000 UTC; Views: 2796; Favourites: 125; Downloads: 61
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Description Picture of tungsten coil burnt in open air at low voltage.
Picture in false colours made with Scanning electron microscope.
Original picture by me with a JEOL JSM 6360LA, colours by me

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Comments: 136

Urus-28 In reply to ??? [2014-10-13 15:52:56 +0000 UTC]

Thanks for your support
I've noticed that you faved many of my pictures, I'm glad you like my work

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Writto In reply to Urus-28 [2014-10-18 10:00:22 +0000 UTC]

No probs, keep it up!

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TTM77 [2013-10-07 02:24:04 +0000 UTC]

so the original pic is in grey scale?

nicely done btw.

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Urus-28 In reply to TTM77 [2013-10-07 16:47:00 +0000 UTC]

Yes the original picture is in grey scale, all the pictures coming from electronic microscope are in grey scale because they don't use light to create the picture

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TTM77 In reply to Urus-28 [2013-10-07 19:00:10 +0000 UTC]

Great job.  by why the low voltage?

I'm curious how you do the coloring.  It looks great. 

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Urus-28 In reply to TTM77 [2013-10-07 20:51:00 +0000 UTC]

It was an experiment for my curiosity, if you lit the coil at its nominal voltage it will burn just like wood in few seconds (in fact it's a very fast oxidation at high temperature). I've observed the process with an optical microscope first, so to make the observation possible and not too fast I've chosen to lit this coil at low voltage (less than 6V). Once the result interesting with optical microscope I put the coil in the electronic microscope to see it in details. It was interesting for me to make this experiment because I know the result of strong oxidation at high temperature and I'm able to tell if oxygen was present in some defects.

I've made the colouring with photoshop, using several gradient layers with mask Quite easy in fact

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TTM77 In reply to Urus-28 [2013-10-08 15:08:21 +0000 UTC]

I see, so you knew it will burn and get destroy quickly.  That's why you use low voltage to slow it down for more control?

I knew it had to deal with gradient.  But I can't seem to color the object with a certain color with a different background.  I just need to play with it more.  thanks. 

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Urus-28 In reply to TTM77 [2013-10-08 17:20:16 +0000 UTC]

Yes exactly

You have to use fusion mask with your gradient, this allow you to put the gradient on specific area

This tutorial will explain you how to work with mask

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TTM77 In reply to Urus-28 [2013-10-09 04:16:24 +0000 UTC]

I need to learn this gradient thing.  I did try it a few time.  Came out decent.

I think I did it with this shot ttm77.deviantart.com/art/Let-i…

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Urus-28 In reply to TTM77 [2013-10-14 17:59:27 +0000 UTC]

I've commented your picture

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BlazingFireBug [2013-09-10 18:07:00 +0000 UTC]

So amazing!!! I like the world you show through your cameras!!! So beautiful!

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Urus-28 In reply to BlazingFireBug [2013-09-10 18:20:30 +0000 UTC]

Well I don't really use a camera, but yes our world is really surprising and fascinating when seen at very small scale

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BlazingFireBug In reply to Urus-28 [2013-09-10 18:47:54 +0000 UTC]

It might not be classified as a camera per say, but the way I see it, is if it records a visual image in some way, it is a camera...
Yes, it is! Your images are inspiration to me. They remind me that nothing has to be inside a box when I'm trying to figure out what to draw, write, or photograph... I love them!

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Urus-28 In reply to BlazingFireBug [2013-09-13 18:41:58 +0000 UTC]

Well I was thinking of camera as something who capture a picture using light.
With this kind of equipment it's completely different, but ok it's not a problem ^^
I'm really pleased to know that my work give you some inspiration

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BlazingFireBug In reply to Urus-28 [2013-09-13 18:58:22 +0000 UTC]

Yeah, that makes sense. I guess I have a slightly different perception. I'm an abstract thinker...
I bet it is totally different! I bet it's also way more complicated, time consuming, and difficult...

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Urus-28 In reply to BlazingFireBug [2013-09-13 19:07:20 +0000 UTC]

Well it's probably similar in difficulty to the job of a professional photographer in his studio. With a difference in the time for a picture, I need 7 minutes to take one picture in really high resolution...
The difference is that my job is not about taking pictures, it's about explaining things using pictures (and tests and measurements.... )

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BlazingFireBug In reply to Urus-28 [2013-09-13 20:55:52 +0000 UTC]

Oh. Ok. I understand.
Wow. 7 minutes? As a photographer, you only need enough time to pose the subject and take about 3 photos (to ensure quality), so maybe about 3 minutes at most, without special lighting effects and such.
So, if you don't mind my asking, what is the name of your job? (Like a person who takes and sells photos is called a photographer...)

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Urus-28 In reply to BlazingFireBug [2013-09-15 20:37:11 +0000 UTC]

The name of my job... Good question
I would say microscopist technician
People call me SEM expert also at my job.
But in fact both are quite limited compare to my full activities, a more general and correct term could be engineering technician

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BlazingFireBug In reply to Urus-28 [2013-09-16 05:52:16 +0000 UTC]

oh. Okay. That's kewl!

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tayleaf [2013-08-30 04:50:41 +0000 UTC]

Wow this is really beautiful! Amazing photo and amazing camera!!

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Urus-28 In reply to tayleaf [2013-08-30 07:06:54 +0000 UTC]

Thank you
The equipment that make this kind of picture does not enter in the range of cameras, in fact we should not even call it a photography because there is no light involved in the picture creation process.

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tayleaf In reply to Urus-28 [2013-08-30 08:51:24 +0000 UTC]

I really believe that I am not schooled in these types of workings enough to even begin to understand, but they really are spectacular!

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FalseShepherd [2013-05-20 20:14:27 +0000 UTC]

Sort of reminds me of the Earth layers. Looks really good. I like how the colours fade out/in to each other, rather than a sudden break off of one colour as the next starts.

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Urus-28 In reply to FalseShepherd [2013-05-21 17:22:54 +0000 UTC]

I've chosen using a colour gradient to have a link with the actual temperature that this coil have seen during the lighting Colours chosen are also linked with this temperature

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DrawnArtist [2013-03-21 20:45:07 +0000 UTC]

I'm at a loss for words (in a good way)!

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Urus-28 In reply to DrawnArtist [2013-03-22 16:16:12 +0000 UTC]

Well it's probably my best micrography
But I hope I will do something even better one day ^^

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lyc [2013-03-20 03:01:24 +0000 UTC]

so um, where did you get a SEM?

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Urus-28 In reply to lyc [2013-03-20 07:50:46 +0000 UTC]

It is my job, I'm a microscopist technician in charge of a SEM an other equipments for analysis in the laboratory where I work.

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coruskating [2012-12-16 20:47:05 +0000 UTC]

Amazing! What tremendous thermal wear...

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Urus-28 In reply to coruskating [2012-12-16 22:23:03 +0000 UTC]

Tungsten does not like oxygen at high temperature ^^
Thank you for the visit ^^

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cvcharger14 [2012-12-12 20:29:08 +0000 UTC]

I can see now how the filament eventually breaks down from constant usage.

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Urus-28 In reply to cvcharger14 [2012-12-13 21:38:55 +0000 UTC]

Well actually it's far from the normal break down of a tungsten coil... Verrrry far
But thank you for the visit ^^

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bluePartout [2012-12-07 15:21:20 +0000 UTC]

fascinating insight ... and you made it art!

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Urus-28 In reply to bluePartout [2012-12-09 11:56:29 +0000 UTC]

I try to share the universe I have the chance to explore

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bluePartout In reply to Urus-28 [2012-12-11 01:25:52 +0000 UTC]

Would love to see more

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Urus-28 In reply to bluePartout [2012-12-11 16:33:26 +0000 UTC]

Well, I have a part of my gallery dedicated to this and I update it regularly
I've seen you've found the way

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bluePartout In reply to Urus-28 [2012-12-11 23:27:07 +0000 UTC]

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WindDesert [2012-11-27 13:21:19 +0000 UTC]

Super photo, je suis assez bluffé par les textures, le "dégradé" de combustion sur la pièce est fou!
Du coup, je suis un peu curieux, j'ai vu dans les commentaires que les images étaient en noir et blanc, du coup le passage à la couleur, comment ça marche, c'est toi qui choisis toujours comme ça ou tu te base sur quelque chose?

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Urus-28 In reply to WindDesert [2012-11-27 17:04:46 +0000 UTC]

Pour la mise en couleurs je choisis des teintes qui le plus souvent marqueront une phénomène intéressant ou serviront de support à l'histoire que l'on peut raconter autour de l'image.
Pour cette image j'ai choisi un dégradé rappelant la température car je voulais justement montrer la relation entre la température et son effet sur un filament allumé à l'air libre.
Dans d'autres cas je m'en servirai pour montrer une différence de nature de surface :
-zone de rupture ou zone intacte
-différence de composition chimique
-dépôt du à une condensation...
Dans la plupart des cas il faut aussi ajouter une volonté graphique qui ajoute des couleurs sans besoin physique, comme par exemple le dégradé du fond passant du blanc au vert.

Il peut arriver aussi que des images voient leur couleurs appliquées uniquement par désir esthétique.

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WindDesert In reply to Urus-28 [2012-11-28 11:27:28 +0000 UTC]

D'accord, intéressant ça! C'est vrai que quelques couleurs ça aide très vite à mieux appréhender ce qui se passe sur une image..
J'ai regardé un peu le fonctionnement des microscopes électronique à balayage, c'est assez fou quand même (j'ai un cours la dessus bientôt normalement du coup ça m'intrigue pas mal ^^)

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Urus-28 In reply to WindDesert [2012-11-28 11:46:52 +0000 UTC]

Oui le fonctionnement théorique de ces machines est fascinant et on a peine à croire que les premières machines de ce genre sont arrivées avant le développement de l'informatique.
Mais tout ceci s'oublie assez vite quand on les utilise, tout les réglages sont maintenant simplifiés pour permettre une utilisation rapide et confortable, ne reste finalement que l'expérience l'opérateur pour choisir les bons réglages en fonction de l'échantillon (et ça c'est pas si simple)

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WindDesert In reply to Urus-28 [2012-11-29 23:51:31 +0000 UTC]

Arrête moi si je suis indiscret mais du coup pour la compagnie c'est quoi les applications industrielles de ce genre de microscope? J'imaginais ça pas mal pour la recherche mais j'imagine qu'il doit y avoir pas mal d'applications dans l'industrie..

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Urus-28 In reply to WindDesert [2012-11-30 08:16:38 +0000 UTC]

Oui il y a beaucoup d'applications industrielles.
Là où je travaille nous utilisons cet équipement pour étudier les ruptures, en particulier pour trouver l'origine de la rupture et les défauts potentiels. Ces ruptures ont lieu dans des fils avec des diamètres allant de 30 à 200µm il est presque impossible de faire ces observations en optique dans de bonnes conditions. Nous l'utilisons également pour étudier les vieillissements de matériaux et les comportements physico-chimique.
Un de gros avantage de ce genre de microscope est qu'il est souvent lié avec un détecteur EDS qui permet d'analyser la matière.

L'industrie des semi-conducteurs fait une grosse consommation de ce genre de matériels pour le contrôle et la fabrication des composants. On peut en trouver chez les fabricants de shampoing pour étudier le comportement des écailles de cheveux (comme dans les pubs, c'est vraiment ce qui est fait). Les industries automobile et aéronautique les utilise pour caractériser les matériaux et les comportements.

En gros dès que l'on souhaite étudier des choses qui se déroulent à des échelles inférieure au millimètre sur des objets non plans le microscope électronique à balayage devient très utile.

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WindDesert In reply to Urus-28 [2012-12-09 15:44:59 +0000 UTC]

Ah d'accord, je pensais que ce genre de matos était surtout utilisé en recherche, mais ça manque pas d’utilisations dans l'industrie en fait!

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Urus-28 In reply to WindDesert [2012-12-09 18:30:33 +0000 UTC]

Ca a commencé dans la recherche, mais aujourd'hui le plus gros consommateur c'est clairement l'industrie

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MartinSilvertant [2012-11-26 19:50:58 +0000 UTC]

Wow this is a photo? I assumed it was some crazy digital painting of a coil going from ice to fire.

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Urus-28 In reply to MartinSilvertant [2012-11-26 20:01:09 +0000 UTC]

I have some difficulties to classify such kind of pictures in fact
It's a picture of something real, taken by a machine, so it's not digital painting... And since this picture is made by an electron beam it's not a photography, there is no light involve.
So at the end I've put this in photomanipulation because I have to make all the colours and put it as some kind of digital art.

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MartinSilvertant In reply to Urus-28 [2012-11-26 20:09:47 +0000 UTC]

I do know electron microscopes don't work with optical light, however I don't have a great insight into the process. How can you get some parts out of focus with electrons?

Have you ever read these articles? [link] [link]

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Urus-28 In reply to MartinSilvertant [2012-11-26 20:17:37 +0000 UTC]

For scanning electron microscope like the one I use, the electron beam have a cone shape. Very similar to the light cone inside a camera lens. The difference between light beam and electron beam is the sharpness of the cone, the electron beam is far more sharper than light and create larger depth of field, but still limited.
Other problems can also create lack of focus on pictures, due to the settings of the microscope and sample.

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MartinSilvertant In reply to Urus-28 [2012-11-26 20:22:44 +0000 UTC]

Can you also experiment with the exposure time or doesn't it work like that? Do you have any photographs gone wrong which look beautiful?

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