Versarien Share Discussion Threads

[melf] 04/11/2019 10:27

Wrong thread Rid......this is VRS. Unless of course you're trying to ramp another share.

[rovi70] 04/11/2019 10:26

Recently, researchers have proposed graphene as a base material for transistors. Because of the atomic thickness, the graphene base is almost transparent to electron transport, leading to a negligible base transit time. At the same time, the remarkably high carrier mobility of graphene will benefit the base resistance compared with a thin bulk material. Graphene-based transistors (GBTs) generally use a tunnel emitter that emits an electron through an insulator. However, the emitter potential barrier height seriously limits the cut-off frequency. Theoretical study has indicated that a Schottky emitter may solve this potential barrier limitation.

A team of researchers at the Institute of Metal Research, Chinese Academy of Sciences, has built the first graphene-based transistor with a Schottky emitter, which is a silicon-graphene-germanium transistor. Using a semiconductor membrane and graphene transfer, the team stacked three materials including an n-type top single-crystal Si membrane, a middle single-layer graphene (Gr) and an n-type bottom Ge substrate.

Compared with the previous tunnel emitters, the on-current of the Si-Gr Schottky emitter shows the maximum on-current and the smallest capacitance, leading to a delay time more than 1,000 times shorter. Thus, the alpha cut-off frequency of the transistor is expected to increase from about 1 MHz by using the previous tunnel emitters to above 1 GHz by using the current Schottky emitter. THz operation is expected using a compact model of an ideal device. The electrical behavior and physical activity of the working transistor are discussed in detail in the published paper in Nature Communications.

With further engineering, the vertical semiconductor-graphene-semiconductor transistor is promising for high-speed applications in future 3-D monolithic integration because of the advantages of atomic thickness, high carrier mobility, and the high feasibility of a Schottky emitter.

[luckyorange] 04/11/2019 10:20

Jeeeez, shakes head .

[rogerthegrouch] 04/11/2019 10:19

Thanks Shavian - most are characters from the past cartoons. Some of the team, some shareholders, some visionaries.

The two on the fire are tweedledum and tweedledee. Although they represent everyone who is trying to get the share price down whether it because they're short or becuase they are desperately trying to get back in after chasing other fireworks that turned out to be duds.

[1teepee] 04/11/2019 10:17

Teepee is in the front row;)

[ridicule] 04/11/2019 10:04

Applied Graphene Director's interview.

[dtaliadoros] 04/11/2019 09:53

I see. Interesting. Very interesting

[shavian] 04/11/2019 09:46

Another brilliant cartoon Roger. I’m struggling to identify the gents in the grandstand, though - any ideas anyone? Presumably that’s Tina and Woody in the front row?

[compoundup] 04/11/2019 09:39

serratia - re your 82349:

"It's now estimated that reinforced concrete has a lifespan of 50 - 100 years so nearly all concrete structure the world over will need to be replaced this century."

It strikes me there's a remedial opportunity here. Finished concrete is characterised by microscopic cracks in its makeup, which is why moisture can get to embedded steel reinforcement and degrade it by corrosion. In applying a GNP infused coating over the surface of the concrete, there is an opportunity to seal these cracks with a hydrophobic layer, thereby extending the life expectancy of the structure. The value of this would be huge. I expect research projects will be under way. (VRS have coatings industry collabs.)

[shavian] 04/11/2019 09:35

“President Xi Jinping will attend the opening ceremony of the second China International Import Expo (#CIIE) on Tuesday in Shanghai and deliver a keynote speech. The event will be broadcast live by @PDChina.”

ISTM we’ll have to wait until tomorrow to get a peep out of Neill on China, NOMAD or no NOMAD, global geo-politics and President XI arguably trump those footling AIM RNS rules!

[woodpeckers] 04/11/2019 09:32

Just brilliant again Roger, well done!

[1teepee] 04/11/2019 09:28

Leaky east

[spike_1] 04/11/2019 09:23

DTaliadores: re recent rise: on Friday a picture from a Chinese article related to post 82383 showed a signing ceremony (on Friday) and there was also a short vid. there were two rows of people around nine sitting at the front (doing the signing) and VRS's Chris (CFO) was in the centre! The signing related to incubation centres for graphene as per recent RNS's.

It is believed that this was the beginning of the formal BIGT 'completion' process.

Best wishes - Spike

[andy] 04/11/2019 09:14

superg13 Nov '19 - 11:00 - 82288 of 82382

While on that Zac topic.

FFS ignore the chart bit he did re FDI.

FDI are in huge debt and are likely to go bust as it stands. Highly illiquid so I wonder if that was to get some buying while mates exit.

-------


I totally agree, Zac shows himself up by such predictions when he clearly knows nothing about FDI and the debt predicament they are in.


I wondered about the reasons behind it too!

[rogerthegrouch] 04/11/2019 09:11

Latest cartoon - The spark from a tiny star can ignite the plains

[flatcoat1] 04/11/2019 09:09

Take a look at this. This may give you a cluehttp://www.xinhuanet.com/english/2019-11/04/c_138527553.htm

[dtaliadoros] 04/11/2019 09:02

Morning all. Not been following board for a while. Have noticed price up.nicely past few days. What's behind this? BiGT deal announced? There are no RNs s?

[squire007] 04/11/2019 08:56

Yep, not sure they realise what they done :-)

[wuzy] 04/11/2019 08:50

Great volume in first hour

[luckyorange] 04/11/2019 08:44

I would guess he is in quiet mode because they have something to tell us but can't do it just yet, close period and all that!

[pandar] 04/11/2019 08:43

Assuming that we're all correct in thinking that the Chinese have let the proverbial cat out of the bag, I imagine Neill will have to remain virtually silent until an RNS is issued

[rogerbridge] 04/11/2019 08:42

Maybe he is travelling.

[dafad] 04/11/2019 08:35

Neill's awfully quiet

[f3rdinand] 04/11/2019 08:34

That’s right mate, buy high, sell low! You know how to play the market...

[clint fleecewood] 04/11/2019 08:31

By which point you will have missed over 40% rise. Good advice. ;)