#Allotropes

[materialsscienceandengineering]

Allotropy and Polymorphism

Polymorphism is defined as when a material has more than one potential crystal structure. These phase transformations can occur as a result of different external variables - temperature, pressure, etc. - but typically only refer to crystalline materials. (For example, glass is not a polymorph of silica, it is a metastable phase.) Allotropy is a similar concept, but applies only to pure elements. Carbon has multiple potential phase transformations, such as graphite to diamond (or vice versa), which are considered allotropes of the elements. Because of these definitions, polymorphic and allotropic phase transformations are typically solid-solid transformations.

Sources/Further Reading: (Images source - collegedunia) (msestudent) (material-properties.org) (Polymorphism Wikipedia) (Allotropy Wikipedia)

[virtualmentalitydeer]

Pet Peeve

When people say that they need more pencil lead and not that they need more graphite

[jackrabbitomniscient]

*Horrible cackling noise*

[6-and-7]

Time Ram - Removal of the Daleks

After disabling the dismal Dynotrope with Mel (see: The Krrrrotons), the Doctor must face off against its siblings; Allotrope and Terry Tropes. Keff McCulloch is 'avin' a wank, along with the entire planet of Spiridon. The Thals have crashed their pantry. The Dalek Supreme has its balls in a vise and Davros has a bomb wedged up his crack. Meanwhile, Ace has fallen in love with the invisible man and Sylvester McCoy is doing his best slippy acting. It could only happen on Time Ram: now with 40% more Abslom Daak!

Alternate versions below the cut

[silicacid]

mizuki is v good in this event ik gladiia is seething back there. also E1 ulpianus can survive EX allotropic herald i love this whale

[whats-in-a-sentence]

Boron exists in several different crystalline forms (allotropes), each of which is characterised by clusters of 12 boron atoms located at the vertices of an icosahedron (a 20-sided geometric figure), as shown in figure 14.2.

Each boron atom within a given cluster is equidistant from five others and, in the solid, each of these is also joined to yet another boron atom outside the cluster (figure 14.2b).

"Chemistry" 2e - Blackman, A., Bottle, S., Schmid, S., Mocerino, M., Wille, U.

[yugiohcardsdaily]

Dimensional Allotrope Varis

"Cannot be destroyed by battle with a monster with the same Type or Attribute as this card. You can declare 1 Monster Type and 1 Attribute; this card becomes that Type and Attribute until the end of your opponent's turn. You can only use this effect of 'Dimensional Allotrope Varis' once per turn."

[kisstheashes]

Would be a fun song to dance to tbh. It just neeeeeeds a choreo hip hop dance for it. With like...20 people you could make this a super effective like...stomp style?? dance with those hard beats in the sample he uses. Idk dance terms that well anymore but you know what I mean. It would be like THUNDER and that's what this song deserves.

also the line "Trace your neck to the woods" makes me insane every time. What a line man. What a goddamn threat. Competes with the line that I think is "cut off my limbs so I cannot go" which sjdhsksjej OKAY

[tenth-sentence]

Three of the red allotropes consist of Se8 rings, thus mirroring the structure of elemental sulfur.

"Chemistry" 2e - Blackman, A., Bottle, S., Schmid, S., Mocerino, M., Wille, U.

[innonurse]

TympaHealth secures $23M Series A funding round

- By InnoNurse Staff -

TympaHealth has raised $23 million in Series A funding led by Octopus Ventures to expand access to its technologically advanced hearing assessment and diagnostic solution.

Read more at TympaHealth/PRNewswire

///

Other recent news and insights

Northgate Technologies announces the acquisition of Allotrope Medical (InnovationMap)

Wearables: Amazon discontinues Halo products (Amazon)

Biomica has announced the completion of a $20 million funding round led by Shanghai Healthcare Capital (Biomica Ltd./PRNewswire)

Telix aims to accelerates AI program with acquisition of Dedicaid (Telix Pharmaceuticals Limited/PRNewswire)

[softly-savage-mint-yoongi]

i started rereading Allotrope due to some of my delusional thoughts and once again i’m mesmerized by it 😩😩 your writing is amazing,, manifesting more suho ficsfrom you 🤧

Hi sweetness!

I'm so happy you're revisiting my story abd loving it all over again! I am also forever in delulu thoughts about Junmyeon, so I can RELATE. 🤌🏻😩

I'm happy you're able to get the fix you're needing from my fic LOL! 😘

[materialsscienceandengineering]

On-surface synthesis of carbyne: An sp-hybridized linear carbon allotrope

In a study led by Prof. Wei Xu (Interdisciplinary Materials Research Center, School of Materials Science and Engineering, Tongji University) and published in the journal National Science Review, a research team achieved the successful synthesis of a one-dimensional carbon chain on the Au(111) surface, with the longest chain containing approximately 120 carbon atoms, and the polyynic nature of the carbon chain was unambiguously characterized by bond-resolved atomic force microscopy (AFM). The creation of new carbon forms with different topologies has emerged as an exciting topic in both fundamental chemistry and materials science. Carbyne (linear carbon chain), an elusive sp-hybridized linear carbon allotrope, has fascinated chemists and physicists for decades. Due to its high chemical reactivity and extreme instability, carbyne was much less explored.

Read more.

[jackrabbitomniscient]

Allotrope the crazy scientist

[amanitavirosalt]

We've got some phosphorus haters here. Need more phosphorus fans

Please reblog so I can have the largest sample size possible!

[workersolidarity]

🇮🇱🇵🇸 💥ISRAELI MILITARY REPEATEDLY USING WHITE PHOSPHORUS ON DENSELY POPULATED GAZA AND LEBANON

Israel's use of White Phosphorus in military operations in densely populated Gaza and Lebanon puts civilians at risk of serious and long-term injuries according to a new Human Rights Watch report on the Israeli-Palestinian conflict.

White Phosphorus is a munition that uses an allotrope of the chemical element phosphorus to create a smoke, illumination or incindiary effect. White Phosphorus burns upon contact with air and reaches temperatures of 800°C [1'472°F].

White Phosphorus can often cause severe burns and injuries which can than absorb the phosphorus, leading to organ failure.

White Phosphorus can be used for marking, signaling, obscuring, or as an incindiary weapon to set fires that burn incredibly hot, devouring soldiers, equipment, and civilians alike.

"Any time that white phosphorus is used in crowded civilian areas, it poses a high risk of excruciating burns and lifelong suffering,” said Lama Fakih, Middle East and North Africa director at Human Rights Watch. “White phosphorous is unlawfully indiscriminate when airburst in populated urban areas, where it can burn down houses and cause egregious harm to civilians.”

Human Rights Watch verified videos taken in Lebanon and Gaza on October 10 and 11, 2023, respectively, showing multiple airbursts of artillery-fired white phosphorus over the Gaza City port and two rural locations along the Israel-Lebanon border, and interviewed two people who described an attack in Gaza.

Human Rights Watch spoke to the people who were from the Al-Mina sector of Gaza City who described "observing strikes consistent with the use of white phosphorus."

Both witnesses, who were in the street and an office building at the time, described seeing air strikes with explosions in the sky, followed by white lines falling to the Earth. The attacks took place some time between 11:30pm and 1am local time.

Both witnesses told Human Rights Watch the smell was strong and stifling and led one of the witnesses to approach a nearby window and record the incident from his phone.

"Human Rights Watch reviewed the video and verified that it was taken in Gaza City’s port and identified that the munitions used in the strike were airburst 155mm white phosphorus artillery projectiles," says the Human Rights Watch report.

"The use of white phosphorus in densely populated areas of Gaza violates the requirement under international humanitarian law to take all feasible precautions to avoid civilian injury and loss of life."

Israeli authorities refuse to confirm or deny the use of White Phosphorus despite the testimony of witnesses and video recordings.

Attacks using air-delivered incendiary weapons in civilian areas are prohibited under Protocol III of the Convention on Conventional Weapons (CCW). Though weaker restrictions exist for ground launched incindiary weapons.

Protocol III applies only to weapons that are “primarily designed” to set fires or cause burns, and thus some countries believe it excludes certain multipurpose munitions with incendiary effects, notably those containing white phosphorus.

#source

@WorkerSolidarityNews

[tenth-sentence]

The element is a grey metallic solid at ambient temperatures and at least four other allotropes are known.

"Chemistry" 2e - Blackman, A., Bottle, S., Schmid, S., Mocerino, M., Wille, U.