Although time was seven or eight years ahead of schedule, the location of the experimental reagent storage room on the second floor was exactly the same as Liang Yuan’s memory.

Looking at the dark red door in front of him that seemed to have not changed for a century, Liang Yuan let out a long breath, alleviating the absurd and unfamiliar sense of entanglement caused by the deviation of time and space.

Push open the door of the reagent storage room, and the unique bitter taste of the chemistry laboratory hits you.

Rows of tall white shelves filled the room, with glass bottles of different sizes placed in order on the shelves, filled with colorful chemical reagents.

"Oh, there are so many bottles, how to choose this?" Ning Wanfei took the door of the storage room casually.

"I had known it, I would have said that the coin was going to the physics laboratory on the front. The materials here looked like they were all powder. Do we still have to fiddle with that troublesome hot-rolling equipment?" Ning Wanjia said distressedly.

"Please take it casually, we will pick it up one by three of us, and then just touch two bottles with our eyes closed." Liang Yuan said with a smile.

"Okay, let's see if there is anything like metal." Ning Wanfei said as she went to the shelves in the east.

Liang Yuan recalled his memories of his previous life at Dongda University, and walked to the southwest corner of the room. In Liang Yuan's memory, there was the place where Dongda University placed inorganic material reagents.

Ning Wanjia also followed Liang Yuan and turned to the right side of the room.

Silver nitrate, sodium chloride, potassium carbonate, litmus, phenolic, various PH test strips, acid and alkali indicators... Liang Yuan looked at the shelves of many familiar items in his previous life, and felt a kind feeling arises naturally.

Should I choose my old profession when choosing a major next year? If I choose a major in chemical engineering, it will probably break the glasses of countless people. Liang Yuan thought about it with some expectations.

"Xiaoyuan, there are so many materials, what should we choose?"

There was no one around, and the girl quietly hugged Liang Yuan's waist from behind.

"Don't choose liquids. We have never done any measurements of liquid materials after freezing at low temperatures. It's better to find solid or powdery materials." Liang Yuan said slowly.

After browsing about two-thirds of the reagents, Liang Yuan finally found what he needed on the last shelf in the corner of the room.

Next to a large bottle of white sodium hydroxide particles, the grey-black magnesium diboride powder that looks dirty is quietly placed in a wide-mouth glass bottle with a lid.

God opened his eyes, Liang Yuan thought excitedly that Dongda really reserved this thing as a common reagent, otherwise he would not know how to invent this thing without revealing traces.

At this time, magnesium diboride was used by humans as a special chemical reagent, firework additive, and additive to improve rocket combustion efficiency. People did not realize that this simple and cheap compound actually had excellent superconductivity.

Dongda University's majors in applied chemistry, physics chemistry, chemical thermodynamics, etc. are quite powerful. Liang Yuan, a professor in the chemistry department of Dongda University, often obtained national rocket propellant research and development projects in his previous life. It is precisely because of this that magnesium diboride, a relatively rare artificial compound in the 20th century, can become one of the regular items in Dongda University.

Magnesium diboride crystals belong to the hexagonal crystal system. As early as 1950, scientists were able to synthesize magnesium diboride in the laboratory. However, its superconductivity has never been studied.

Liang Yuan's discovery of the superconductivity of magnesium diboride in his previous life was Jun Nagamatsu, a fourth-year student at Aoyama College, Japan.

In March 2000, the college student who was about to graduate and entered society accepted an experimental task assigned by his supervisor Qiu Guangchun to test the conductivity of magnesium diboride.

After Yongsong Chun made 165 samples of magnesium diboride, he conducted conductivity experiments on them under various conditions one by one. As a result, the superconductivity characteristic of magnesium diboride was unexpectedly discovered.

After Qiu Guangchun's team announced this result to the world, a research boom in the global scientific community was no less than when it was first discovered in the 1980s. In just one year, papers on magnesium diboride rose from tens of thousands of digits per year.

After more than a year of research, humans have gained a preliminary understanding of the superconductivity of magnesium diboride.

The superconducting transition temperature of pure magnesium diboride crystals reaches 39K, which is far lower than the transition temperature of yttrium barium copper oxygen superconducting compounds found in the 1980s, and liquid hydrogen or liquid neon can only be used as a coolant that maintains the superconducting state.

Of course, compared with the niobium series superconducting materials that used expensive liquid helium as coolant in the 1980s, the coolant of magnesium diboride can be said to be quite cheap.

From the perspective of transition temperature, magnesium diboride has no advantages, but in addition to the transition temperature being lower than high-temperature superconducting materials, magnesium diboride has extremely huge advantages in industrial practicality.

From a cost perspective, the raw materials of magnesium diboride are cheap. Whether it is magnesium or boron, it can be said to be almost infinite compared to rare elements such as yttrium, barium, and niobium with rare reserves on the earth.

In terms of processing, although magnesium diboride is also a substance similar to ceramics, magnesium diboride powder is different from the discrete and extremely difficult to process yttrium barium copper oxide compound. The powder of magnesium diboride has good molecular tightness and is very easy to process into wire or film.

More importantly, after the magnesium diboride crystal is ultrafinely finely crushed, it can cold-roll out superconducting wires with excellent performance directly at normal pressure and at room temperature.

Compared with the high-temperature superconductor series of yttrium barium copper oxygen superconductor series, the high-voltage and high-temperature environment required for processing are directly reduced by an order of magnitude from the processing cost and technical difficulty.

After the research on magnesium diboride superconducting has gradually improved, almost all major research institutions around the world have reached similar conclusions. Compared with the mature yttrium barium copper-oxygen series superconducting wires that have been studied for more than ten years, the cost of magnesium diboride wires is less than one-third of the cost.

The biggest reality trend of magnesium diboride superconductors replace yttrium barium copper-oxygen high-temperature superconductors and traditional niobium series superconductors is that since around 2005, Xu Xiaoxing, a scientist from the Republic of America (Note 1), broke through the technical difficulties of industrial mass manufacturing of magnesium diboride thin films, traditional superconductors such as the United States and Japan have opened up the preparation technology of yttrium barium copper-oxygen high-temperature superconductors and niobium series superconductors that were originally strictly prohibited from exporting to the Republic overnight.

Among the private and state-owned enterprises in the Republic that year, a new wave of mass introduction of superconducting wire manufacturing technology was set off.

Before Liang Yuan was thrown into this world, around 2010, in the United States, with the increasing maturity of magnesium diboride superconducting wires, manufacturers with three different routes, including magnesium diboride and yttrium barium copper oxygen high-temperature superconductors and niobium series superconductors, were having a lot of fun.

Although traditional industrial consortiums such as the United States, Japan and Europe have invested hundreds of billions of dollars in R&D funds in yttrium barium copper oxygen high-temperature superconductors and niobium series superconductors in the past decade, they have just improved and optimized the batch industrial manufacturing of the two, and they cannot cut their flesh and leave the field and can only force themselves to support themselves. However, facing the huge competitive advantage of magnesium diboride superconductors, traditional superconductors are still defeated step by step.

Before and after Liang Yuan was about to travel, the world's major manufacturers of superconducting wires that use superconducting wires on a large scale are the major manufacturers of high-end medical equipment, GE, the United States, Philips, and Siemens, and Germany, have successively launched new generation of nuclear magnetic resonance imagers based on magnesium diboride superconducting coils.

In the military industry, superconducting devices made of magnesium diboride film were installed on a series of military equipment such as the US Tomahawk cruise missile, standard air defense series missiles, F18 fighter radar, and F16 fighter radar as early as around 2005.

Liang Yuan could learn about these magnesium diboride superconducting materials, but it was heard by Cai Xiaobing, who was fooled in the sea of ​​scientific research when he was hired as a visiting professor at Peking University in his lifetime.

Liang Yuan insisted on incorporating the magnetic levitation project into the group's overall plan, and the big bug of magnesium diboride is the most important main cause.

The hardware platform built by excellent superconducting wires and high-performance industrial chips, matches the appropriate operating system and analyzes the software, will be the core system of the crown of the medical device field in the future - the core system of the nuclear magnetic resonance imager.

In the military industry, the performance gap between electronic devices using superconducting devices and electronic devices without superconducting devices is not one or two times. It is often a difference of one order of magnitude, such as five to ten times.

The Yutu Moon Rover, which is similar to the moon landing in the New Century Republic, could not complete long-distance remote control commands without using superconducting devices in communications.

It can be said that under the same power, it is basically impossible for non-superconducting electronic devices to interfere with electronic devices containing superconducting devices.

Superconducting technology has revolutionary driving force for power, energy, transportation, military industry, medical, communications, semiconductors and other industries.

Liang Yuan drew out this super killer weapon more than ten years in advance, whether it was choosing technical transactions or quietly studying the Party and the State. For Yuan Jia at this time, it was a strategic trump card.

Of course, facing this kind of pit with great interests and full of right and wrong, two girls were with Liang Yuan's side, otherwise they would not dare to dance on the tip of the knife with the courage of Liang Yuan's sun.

Looking at the dark bottle in front of him, Liang Yuan, who knew that he had accomplished his work, couldn't bear the excitement in his heart. He turned his hand and took the girl's slender waist behind him, and hugged Ning Wanjia in his arms with force.

The faint fragrance on the girl's body mixed with the bitter taste unique to the chemical reagents turned into an extremely special and bitter breath and rushed into her nose. Liang Yuan's heart rate, which was originally pounding due to excitement, became faster and faster.

Listening to the childhood sweetheart's heavy breathing, he felt the heat from Liang Yuan's mouth and nose spraying on his collarbone. An indescribable heat rose from his whole body, Ning Wanjia felt that he had no more energy.

"Xiaoyuan, I'm going to breathe." The girl's voice was soft and gentle, and it went straight into Liang Yuan's heart.

The eyes of the bell in her arms flowed, the water vapor in her eyes was as rich as dripping, and a delicate glimmer flashed on her pink lips. The large and faint fragrance spread across the space in the corner as the girl breathed more and more rapidly.

Should I kiss you? Liang Yuan thought in a tangled way. Ning Wanjia's teeth half-hanged on her body were slightly exposed, and her half-open cherry lips seemed like the peach blossoms that had just spitted, looking very sweet.

"Xiaoyuan. Have you two found it? I have found two materials." Ning Wanfei's breathless voice broke the ambiguous relationship between Liang Yuan and Ning Wanjia.

"I'll choose now." Liang Yuan suddenly felt that his bitter gallbladder had moved to his tongue.

Ning Wanjia's eyes cleared in her arms, looking at Liang Yuan's facial features that were tugging together, first gave Liang Yuan a charming smile, then wrapped around Liang Yuan's neck and gently kissed Liang Yuan's mouth.

"Xiaoyuan, let's take these two, just black and white." Ning Wanjia said, pointing to the two glass bottles containing sodium hydroxide and magnesium diboride reagents in front of them.

It was obvious that Ning Wanjia had just remembered the joke of the black-faced, black-shot little bully.

"Jia Jia is not that dark." Liang Yuan said shamelessly.

The slandered girl didn't say anything. She gently rolled up the cuffs of the T-shirt, and half of her green forearms were exposed. She pulled someone's arms and placed them side by side, then looked at Liang Yuan with a smile.

Liang Yuan smiled and pulled back his arm, picked up two glass bottles, one black and one white, and put them in his hand tool kit, and then said nonsense: "I am a protective color in winter. Dark color is easy to absorb solar radiation, which is beneficial to keep warm in winter, and is very consistent with the evolutionary logic of organisms."

"Pig Head, then we are better in summer." Ning Wanjia smiled and pinched Liang Yuan's ear, dragging someone to the door.
Chapter completed!