After tasting the bubble tea, Hestia looked at Tianxuan with a smile, which made him blush and be a little embarrassed.

After a while, Tianxuan scratched the back of his head and asked with a red face, "How did this become you staring at me!" ”

"Huh!" Hestia put his hand in front of his mouth and smiled heartily, and then pretended to be mysterious: "I know that you are very curious, and you must be interested in the things of the observer!" ”

"Huh! Yes, yes, yes! Tianxuan opened his eyes, was stunned for a moment, and said with a smile, "How do you know?" ”

"I don't know you yet!" Hestia smiled slightly and waved his hand, "Come with me!" ”

"Hmm!" With that, Tianxuan followed.

After passing through a few corridors, Tianxuan followed Hestia to the outside of the city lord's hall, and at this time he looked up and saw that the sky seemed to be shrouded in an orange mist, but on closer inspection, this mist was very strange, it looked like it was transparent, and it was constantly fluctuating like water ripples.

Hestia saw that Tianxuan stopped and looked at the sky in a daze, and asked, "Do you know what you see?" ”

"What is it?" Tianxuan turned his head and asked.

"Plasma shield!" Hestia explained slowly.

"What is this? How come I've never heard of it? Tianxuan was very surprised when he heard this term, and his eyes immediately lit up, and he was very interested.

"It's a kind of stance made by plasma technology."

"Oh? Plasma stand, this is the first time I've heard of it! Tianxuan kept blinking his eyes, full of surprise.

"Come here, come here." With that, Hestia led Tianxuan to a large pool of water 1.5 meters high.

When I got closer, I saw an orange and almost transparent pillar of light rising into the sky from the pool, and on closer inspection, the pillar of light seemed to be vaguely connected to the protective shield overhead.

"This is ......" Tianxuan walked to the big pool in surprise, pressed his hand on the fence of the pool and looked down. I saw that the orange liquid was slowly flowing in the pool, but the liquid level was pitted, and the liquid kept spreading like a gas.

"Hey, that's weird! What's in this pool? Tianxuan asked puzzled.

"That's plasma." Hestia explained with a smile.

"What is plasma?"

"Plasma is a form of matter composed of free electrons and charged ions, which is widely found in the universe and is often regarded as the fourth state of matter, known as the plasma state, or supergaseous state, also known as plasma."

"I knew about solids, liquids, gases, and I had never heard of plasma. It feels too abstract. Tianxuan spat at Hestia and said.

"That!" As she spoke, Hestia took Tianxuan's hand and reached for her shawl.

At this time, Tianxuan found that his hand passed directly through the halo that lingered around the shawl, and he did not feel like touching the smoke. Then, Hestia took his hand and shook it back and forth, and suddenly Tianxuan felt his hand float as if it were floating in liquid.

"How so?" Tianxuan looked at Hestia and asked.

"This is the plasma state!" Hestia pursed her lips and smiled.

"Oh! That's what happened, but it doesn't seem to me to be useful except for being pretty! Tianxuan puffed out his mouth and said.

"Huh!" Hestia let go of Tianxuan's hand, touched her nose and smiled, and after pressing it on her body, the orange halo in front of her suddenly flashed. Then she straightened up, put her hands behind her back, and said, "Come, reach out to me and try again." ”

"Huh? Where to touch? Tianxuan narrowed his eyes and asked.

"Anywhere!" Hestia said with a half-squinted smile.

"Poof" Tianxuan couldn't help but spray, and then his face flushed, and then said with a smile, "Really casual?" ”

"Hmm!" Hestia nodded, then smiled.

"What the hell is this?" Tianxuan lowered his head and muttered in his heart, stretched out his arms at will, and pushed his palms against Hestia's shoulders.

But when Tianxuan's palms were about to touch Hestia's shoulders, he suddenly felt like something was blocking him.

"Huh?" Tianxuan was stunned for a moment, and when he was sure that he was not hallucinating, he withdrew his palm and pushed it again.

"Bang Bang!" With a few slapping sounds, Tianxuan realized that Hestia was blocked by an invisible barrier in front of him. In order to make sure that he was not dreaming, Tianxuan withdrew his arm and stretched out his index finger to bend it and tried to knock it on the front with his joint, and sure enough, a barrier appeared, and at the same time, there was a "knock" sound of finger tapping.

"What's the situation? This is ......" Tianxuan glared at Hestiagan.

Unexpectedly, Hestia touched his nose and smiled: "This is the position of plasma manufacturing!" Now you can see it! ”

"Wow! It's amazing, the plasma shield covering the sky is the same principle as the barrier in front of you now! Tianxuan's eyes widened, feeling very incredible.

"Of course!"

"But I can't imagine that graphene shawl of yours is so powerful."

"Come!" With that, Hestia took Tianxuan to an operating room and opened a console, on which holograms appeared.

"That's graphene. It is a two-dimensional crystal made of carbon atoms with only one atom thickness. ”

At this time, Tianxuan clearly saw that a carbon atomic structure in the hologram was broken into a two-dimensional sheet. Immediately afterward, a force began to pull the two-dimensional sheet, but no matter what it was pulled into, the sheet did not break.

At this time, a row of smiling particles in the image are trying to pass through the flamella, but as soon as they touch the flam, they are bounced off. At this time, Hestia quickly explained: "Graphene is so dense that even the smallest gas atoms cannot penetrate. ”

“What？ You mean to say that hydrogen atoms are also impenetrable? ”

"Yes!"

"So the barrier in front of you was graphene?"

"That's right!"

"But before that, didn't I easily pass through these gaseous and liquid graphene with my hands?"

"This is the plasma form that stimulates graphene!"

"Huh!" Tianxuan scratched his head, frowned, and said with some doubts: "I'm starting to have a little clue, but I don't understand it too much!" ”

"Good! Read on! As he spoke, Hestia turned the picture, and a wave of light shone on the two-dimensional sheet of carbon atoms arranged in a honeycomb-like pattern of graphene. Immediately afterwards, the two-dimensional sheet was sparked as if it had been welded by an electric welding machine.

"This is the surface plasmon that is excited on the graphene sheet." Hestia explained at the right time.

"Oh! Now I kind of get it! ”

"Hmmm! Graphene has special electrical, optical and mechanical properties, which makes graphene plasmons have a lot of development value. ”

"And how does it work?" Tianxuan continued to ask.

"Let's start with the surface plasma primitives! It is an electromagnetic mode in which the external light field interacts with free electrons in the metal, and in this interaction, the external light field is captured by the electrons oscillating collectively, constituting SPPs with unique properties. At a flat metal/dielectric interface, SPPs propagate along the surface, and due to thermal effects, they will gradually run out of energy and can only travel a limited distance, about the order of nanometers or micrometers. Only when the size of the structure can be compared with the propagation distance of SPPs, the characteristics and effects of SPPs will be revealed. ”

"Oh! That's it! Tianxuan nodded.

"Hmmm! In these photonic crystals made of graphene, when the diffraction limit limit is broken, only the electromagnetic field needs to be well controlled in the diffraction limit to fully excite the plasmon on the two-dimensional thin sheet. ”

Hestia pauses and then continues: "Depending on the morphology and dimension of the system, there are many kinds of plasmon excitations. The wave loss of the plasmon excited in a single layer of graphene is much larger than that in free propagation, and the coupling of light to the plasmon somehow overcomes this mismatch. In addition, the traditional invariance of graphene structure is broken, so that the plasmon is excited by the free-propagating incident light, and these two-dimensional thin slices are arranged in a ribbon-shaped, disc-shaped, ring-shaped, periodic superlattice ......"

After some explanation, Tianxuan understood and nodded incessantly. After digesting it for a while, he suddenly asked again, "Hestia, is that lilac mist around the observer also a plasma position?" ”

"That's right! Our plasma technology is modeled after the observer's technology. But in terms of efficacy and stability, they lag far behind. Hestia looked a little lost when she said this.

"Hestia, there's nothing to be sad about, you've done a great job!" Tianxuan continued to smile and comfort her, "I think it's amazing!" ”

"You don't understand!"

"What's wrong?"

"The plasma weapons we have developed so far can only suppress the observer in terms of quantity, but so far they have not been able to produce them in large quantities. So failed to provide a continuous supply to the combat units! ”

"Huh!" Tianxuan's words were stuck for a while, and he didn't know what to say.

The two of them stood silently for a while, and Tianxuan was the first to speak: "By the way, Hestia, I want to ask you what do you think of the response to that observer who claims to be a first-class observer who plays with fire?" ”

At this time, Hestia came back to his senses, put his hand against the position of his temple, and said slowly: "Plasma has the property of deviating from thermodynamic equilibrium. When the thermodynamic parameters of the plasma are not uniform, it will lead to rapid expansion and deformation of density, temperature, magnetic field and current in a certain space, and then cause the energy in the region to evolve into various forms of explosions. ”

"Oh!" Tianxuan nodded after listening to Hestia's analysis, and said, "Now I understand, so the ability of the observer will be different. ”

However, after a pause, Tianxuan frowned again and asked, "But why was that observer's plasma position still able to carry out a plasma attack after it was destroyed?" ”

"This is due to the fact that they grow in the core of the earth, where the environment has created their special body structure!" Hestia explained.

"I see! ...... "Tianxuan was about to ask for an explanation, when suddenly an alarm sounded from the city lord's hall, so he had to give up the inquiry and Hestia quickly rushed to the city lord's hall.

This book was first published on Kanshu.com