civil forensic

Chapter 1340 I'll stay here with you.
After another 11 teams were dispatched to various locations, Jiang Yuan finally went back to rest.

It was already well past the end of the workday, but the dispatched criminal investigation teams stayed up even later.

As for the criminal police officers of the Anwan City Public Security Bureau's Criminal Investigation Detachment who had not yet been assigned to a mission, they also took the time to say goodbye to their families...

Judging from Jiang Yuan's current progress, it's clear to anyone with eyes that he has no bottlenecks in fingerprint identification. With so many backlogged cases, even if not all of them match Jiang Yuan's investigative direction, even if only one percent do, we'd have to send out teams in droves.

Jiang Yuan was also in high spirits.

After playing with fingerprints for so long, the development of three-level features has greatly improved its range.

If LV3 or LV4 fingerprint skills are still considered to be within the realm of fingerprint experts as understood by ordinary people, then LV6 or even higher fingerprint experts have entered a new field, involving professional knowledge and research results from the last 20 years or so.

Of course, this is also due to equipment limitations. The high-definition spectral imager that Jiang Yuan is currently using is still a regular commercial-grade one. Ten years ago, this type of research would probably have used scanning electron microscopes, which are things that ordinary universities couldn't afford or were not very capable of using.

Techniques that slightly defy common sense are precisely the best techniques for apprehending criminals.

Over the next few days, Jiang Yuan, on a whim, simply activated his +1 skill and began researching various new fingerprint-related technologies.

The first technology introduced was latent fingerprint development based on nano-fluorescent materials.

Although the word "nano" has become a common term used by scammers in recent years, nanotechnology is indeed slowly being implemented in real laboratories.

It's not as magical as legend suggests, but some nanomaterials do have better optical, electronic, and surface modifiability. In layman's terms, they can shine when you shine a light on them, when you apply something to them, or when you bake them.

Once the fingerprint lights up, it can be used for comparison.

Jiang Yuan chose N-acetylcysteine-coated nanofluorescent materials as his first choice. He made this choice for two reasons: first, it is suitable for plastics, which was exactly what he needed to do with the case; second, the material was readily available for purchase.

The Anwan City Bureau is responsible for the purchase.

Soon, two experts from the ministry's forensic identification center arrived after hearing the news.

They were originally responsible for promoting various fingerprint identification technologies, but without significant results within the system, the busy criminal investigators were too lazy to apply any new technologies. They only thought of new technologies when the old ones failed.

After all, for the vast majority of cases now, the old technology is sufficient. For new technologies to truly become widespread, either criminals need to improve their personal qualities, forcing the police to upgrade their technical capabilities, or the new technology needs to demonstrate extraordinary breakthroughs or high efficiency.

The most typical example is DNA technology, which is more disruptive than fingerprint technology. The latter took far too long to become widespread and improved. In the days before computers, searching a fingerprint database alone consumed countless hours of time for technicians and experts.

The experts at the forensic identification center understood this principle, so when they heard that Jiang Yuan was interested in the new technology he was promoting, they immediately came to him.

Even the best technology needs people to use it to demonstrate its breakthrough and high efficiency. Moreover, simply using new technology to match fingerprints is far less effective in terms of publicity than using new technology to solve serious crimes.

Jiang Yuan's current fame comes from solving cases rather than from technological breakthroughs.

Simply put, every police station has a few skilled officers, but how skilled they are, and why they are better than others, is very difficult to quantify.

Solving cases is a different story. There are only a handful of people in the whole country who can repeatedly solve major, serious, and long-standing cases, and even fewer at the same time.

The Anwan Municipal Bureau organized a solemn welcome ceremony for the experts from the ministry. This was not only because they came from a ministry, but also because the two experts brought a lot of relevant materials, which gave the Anwan Municipal Bureau a much-needed reprieve from its tight budget.

The two experts were also very excited. After cooperating with the city bureau's activities for a while, they followed Jiang Yuan into the laboratory.

A group of people spent two days in the lab experimenting with different materials.

At the same time, Liu Zhuangshi dispatched more and more squads.

Jiang Yuan and his team tried taking fingerprints from various materials, including plastic, coins, and synthetic fabrics. Since the three of them worked together, the results were naturally remarkable.

Liu Zhuangshi experienced both pain and pleasure.

These are technologies he wouldn't normally have access to, and experts he wouldn't normally be able to borrow. Now he's working for him for free, or even for free. It's really great, but the expenses are also really high.

Putting aside other things, the various nanomaterials used by Jiang Yuan and the ministerial experts were custom-made by outside companies. Not only were they expensive, but they also had to pay more for larger quantities because they couldn't keep up with the demand.

In addition, while others were helping him, Jiang Yuan also tried to reproduce some "common" materials from the papers, such as nanoparticles co-doped with Li, Na, and K elements, and more complex nanoparticles doped with rare earth elements such as Eu, Sm, and Mn elements, etc.

All these developers, in essence, are designed to make fingerprints brighter, much like how humans currently obtain energy by boiling water.

However, the cost increases dramatically depending on the method of shining.

weekend.

Once Liu Zhuangshi sat down in the municipal bureau's office, he never left.

The bureau chief, seeing him, also felt a headache coming on, and knew exactly what he was there for. He said helplessly, "You're spending too much money. Anwan City is a poor city..."

Snapped!
Liu Zhuangshi picked up a package of documents from the ground and placed it on the director's desk.

"What is this?" The director asked in surprise, picking up his teacup and taking a tactical sip of water.

"Case 617 and Case 1012 have been solved. Here is some basic information about the people involved, as well as some other case-related materials. After I show them to you, I will send them to the procuratorate." Liu Zhuangshi said, sitting back in his chair and stretching tactically.

In China, numerical names are the most powerful. The director remembered the two cases Liu Zhuangshi mentioned after just a few seconds of recollection.

The bureau chief picked up the documents on the table and asked, "Is this the case of the person who ran away after an accidental injury?"

“Yes, the people camping together got into a fight over a spot, and one of them seriously injured the other before running away. We later visited many other campers in the area and showed them sketches of the people, but to no avail.” Liu Zhuangshi paused and said, “Jiang Yuan found several suspects based on fingerprints, and we went to investigate and confirmed one of them.”

"What are the odds of being right?" the bureau chief asked professionally.

"Absolutely!" Liu Zhuang swore. "When our people arrived at his house, he immediately knew what it was about. He even said he thought we should have come much earlier..."

"Found it based on fingerprints?" the chief asked.

“Yes, there was a conflict when the two sides fought, and there was pushing and shoving. Fingerprints were left on their clothes, but the fingerprints we’ve collected over the years are all incomplete, so we can’t identify the suspect.” Liu Zhuangshi paused and said, “Jiang Yuan used new technology to extract them.”

Director: "So you're here to ask for funding with a perfectly legitimate reason?"

Liu Zhuangshi: "I've deployed all my men to follow up on four cases at the same time."

The bureau chief nodded slowly: "How much do you need?"

Liu Zhuangshi handed over a small note.

The bureau chief opened his mouth wide and looked at Liu Zhuangshi.

Liu Zhuangshi spread his hands and said, "Since I've already spent so much, if you don't give me the money, I'll just stay here..."

Bureau Chief: "You're asking for way too much..."

“If all else fails, I have an idea,” Liu Zhuangshi said in a low voice. “You could contact the criminal investigation teams in a few other cities…”

"I've already tried that method," the bureau chief said calmly.

"You've already used it?" Liu Zhuangshi was stunned for a moment before he realized what was happening. The director was saying, "Jiang Yuan hasn't even agreed yet, and you've already asked other criminal investigation teams for money? This... this is fraud."

“Didn’t Jiang Yuan check their fingerprints? If he did, then it’s not a lie.” The bureau chief forcefully changed the subject, saying, “In short, this trick won’t work.”

Liu Zhuangshi abandoned all pretense and plopped down: "I'm not going back anyway. If I don't get the funding, those companies will target me. Director... take a look at these cases, what do you think..."

"Let me think of a way, let me think of a way." The bureau chief still focused on appeasement, and finally managed to give him some money, and finally sent Liu Zhuangshi away.

After watching Liu Zhuangshi leave, the bureau chief did not hesitate any longer. He had his subordinates organize some documents and then ran towards the city center.

Soon, a kind of legendary superstition also began to echo in the courtyard of the city government.

"Since I've already spent so much, if you don't give me more, I'll just stay here..."

"Please contact a few other cities..."

"If you've checked, it's not a scam..."