Monorail Halbach, Pilhas-maravilha, Modelismo, Grafeno anti-.corrosão, e Lentes impressas em 3D

De volta, e às voltas, com o Arranjo Halbach, imaginei fazer um Arranjo Halbach a partir duma fonte inesgotável de Ímanes, as barras de íman dos Frigoríficos abandonados, que se encontram por aí, deitados fora.

Descubram o Pólo Norte da barra, com uma Bússula, lembrem-se, o Polo Norte dum ìman é o que faz a Bússula virar a ponta Sul:

Desta forma, basta cortar barritas com a mesma largura da espessura dessas barras, que se cria uma fileira sem fim de ímanes de secção quadrada.

Depois, é a rotina de plantar os Ímanes um a um, pôe um, roda o seguinte 90 graus em relação ao anterior, pôe, etc. 

Só na retranca, fiz este "Monorail" para provar o conceito, os ìmanes estão por debaixo do Plástico, mas vocês podem fazer muito melhor...

 Mãos à obra!

Estas Células de Combustível, a Hidrogénio, do tipo de combustível sólido, prometem ser úteis numa data de situações, em vários tamanhos, e é claro que os Engenhocas as vão usar numa data de Protótipos e maquinetas...
Tudo isto, com 20 Anos de duração!

Solid Fuel Type Hydrogen Fuel Cells Deliver High Efficiency and Increased Safety

ROHM, together with Kyoto-based Aquafairy Corp. and Kyoto University, have co-developed compact, lightweight, high-power hydrogen fuel cells designed to power smartphones and other portable devices. These fuel cells overcome the drawbacks of dry cells, lithium-ion cells, and direct methanol fuel cells, significantly reducing weight and increasing output power while providing a higher level of safety, making it possible to provide power in places where AC power is not available or cannot be used.

http://www.designspark.com/content/solid-fuel-type-hydrogen-fuel-cells-deliver-high-efficiency-and-increased-safety

Uma boa fonte de Material difícil de encontrar, como Fibra de Carbono, e toda a espécie de pecinhas, engrenagens, e Engenhocas úteis, são as lojas de Modelismo. Por isso, aqui vai o Link desta, bastante porreira, e dum atendimento impecável, a SVmodelismo:

http://www.svmodelismo.net/







Poder-se-há futuramente proteger o Cobre, e outros Metais, com uma camada de Grafeno que protege contra a Corrosão, isso vai ser impecável, para uma data de fins:

Graphene coating makes copper almost 100 times more corrosion-resistant

By Darren Quick

Following on from news out of the University at Buffalo earlier this year that a graphene varnish could significantly slow the corrosion of steel, researchers from Monash and Rice Universities have used a graphene coating to improve copper’s resistance to corrosion by nearly 100 times. The researchers say such a dramatic extension of the metal’s useful life could result in significant cost savings for a wide range of industries.
Metals are often treated with polymer coatings to help prevent corrosion, but their protective capabilities can be easily compromised by scratches. Although graphene is only one-atom thick and is invisible, not changing the appearance or feel of the metal, it is exceptionally strong and much harder to damage. This gives the material enormous potential for protecting metals even in harsh environments.

http://www.gizmag.com/graphene-metal-corrosion/24434/

A Disney surpreende-nos com esta novidade, Lentes impressas em 3D, por se utilizar um Material com óptimas propriedades ópticas...

Disney Research develops 3D printed optics

Jason Falconer

Researchers at Disney Research Pittsburgh and Carnegie Mellon University are experimenting with 3D printed optics using clear resin. Printed optics can create a variety of effects within 3D-printed objects, from focusing light within printed prisms to channeling light through honeycomb-like "light pipes," which give the effect of individually lit pixels.

   

One of the examples of the new technology uses a mobile projector and internal light pipes to transfer projections through an object, giving a printed toy a pair of animated eyes. An obvious benefit of the technology is the reduction of electronic components. Entire toy lines that would normally require individual LCD or LED displays (and batteries) for animated parts could use light pipes partnered with a single mobile projector to accomplish the same effect.

http://www.gizmag.com/disney-research-3d-printed-optics/24435/

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