Detective: I have a split personality, but I'm not a murderer

He Fudao’s problem is obviously more tricky than the other technical captains’ problems.

But the High Court still doesn’t need any time to think:

“This one is also easy!

If the scanning electron microscope can’t determine the residue on the fiber, I would choose to use an electron microprobe.

The specific method is to first cut the fiber to obtain its cross-section.

Then, using electron microprobes, a focused electron beam is sent to bombard the sample, and the elements and electrons in the sample interact to emit unique X-rays.

The detector can match these X-rays with the X-rays of known elements to obtain the composition and proportion of each element in the sample.

In this way, it is possible to determine what exactly is left on the fiber! ”

After the high court answered, the captain of the criminal investigation team, Wang Ming, immediately looked at He Fudao:

“Team He, is Gao Ting’s answer correct?”

He Fudao’s face was full of surprise, and he nodded, obviously not expecting Gao Ting to answer this question so easily.

“Wow, brother, you really can do it!”

Xiong Leilei immediately put his arm around Gao Ting’s shoulders:

“Although I don’t understand what you’re saying at all, it’s very powerful to listen to!”

Zhou Yiting is also very excited:

“Well, I’ll just say that the person I’m looking for is very good!

The test has also passed, and you can start appraising the car!? ”

As soon as He Fudao saw Zhou Yiting, his face became very ugly, and he said in a low voice:

“Nope!

This question is not only a theoretical question, but also a practical one!

There is a fiber here, and there is also a tiny dark red particle on the fiber.

If you can identify what the particles are according to the method you just said, you will finally pass the test! ”

When Zhou Yiting heard this, her brows furrowed:

“You old man, you even declare a personal vendetta?”

Gao Ting immediately grabbed her, looked at He Fudao, and said with a smile

“Mr. Zhou, what Captain He said actually makes sense.

The identification of physical evidence depends not only on theory, but also on practice.

As long as the theory is good in the brain, a little memorization, anyone can answer like a stream.

Practice, on the other hand, relies on the work of the hand, and requires fine and perfect operation.

In particular, physical evidence such as fibers is very subtle in itself, and when obtaining cross-sections, it is even more necessary to be exactly the same.

Otherwise, it will not only destroy the physical evidence, but also affect the final identification result.

So, I understand Captain He’s request! ”

When He Fudao heard Gao Ting’s words, his expression finally looked better, and his eyes were much calmer when he looked at him:

“Just understand!”

He directly took out a plastic bag, which was obviously prepared in advance, and it was indeed not a deliberate difficulty as Zhou Yiting thought.

He brought the high court directly to the experimental table:

“Then let’s get started!”

Gao Ting took the plastic bag, but because the fiber was too small, he couldn’t find where it was for a while.

However, this kind of physical evidence, when operating, has a set of fixed procedures, which is difficult for him.

As soon as he put on his lab coat, he began to operate.

The first is to cut the fibers to obtain a cross-section with a special substance.

Technicians around, although curious about the operation of the high court.

But I still consciously walked to a place far away from the experimental table, stopped discussing, and turned the mobile phone to silent.

As professionals, they know best that cutting fiber is not as difficult as usual cutting vegetables, the difficulty is not an order of magnitude at all, and a quiet environment is most needed.

And the nervous expressions on everyone’s faces quickly froze.

Because they looked so refined that they needed to confirm repeatedly before they could get off the knife, the high court actually completed it in a few seconds.

The investigators looked at each other, but saw the shock on each other’s faces.

Even He Fudao and other technical captains were also stunned.

Their eyes are more poisonous, just by cutting the fiber, they have seen the extraordinary professionalism of the high court!

Even!

All the captains felt that Gao Ting’s knife seemed to be more accurate and confident than theirs.

At least, in such a short time, they thought they couldn’t do it with such a short time.

Next, Gao Ting began to use electronic microprobes to analyze the fiber cross-section.

Throughout the process, he once again showed professionalism that exceeded expectations.

The operation of the instrument is as good as a textbook!

As the appraisal proceeded in an orderly manner, less than half an hour later, the High Court obtained the result.

And the technicians who had been silent around finally exclaimed.

“I rely on it, this technique of the High Court is too accurate and awesome!”

“Without several years of operating experience, it will definitely not be possible!”

“What a few years, you don’t understand when you look at it!

It is already difficult to cut out such a standardized fiber cross-section, and our department is usually operated by teachers with decades of experience.

And to be like him, in just a few seconds to operate successfully, I have never seen anyone else do it! ”

……

The technical captains are also amazed.

“Professional!”

“So professional!”

“This operation is more textbook than a textbook!”

“I somewhat regret not recording the identification process, especially the cutting of fibers.

Otherwise, there would be material for teaching those cubs! ”

“Oh, that makes sense!

If there is a video, you can show the young technicians what the textbook-like identification process is.

Give them a benchmark to learn from! ”

“The monitoring of the laboratory should have filmed the operation process, but the fine operation of cutting the fiber must not be clear!”

“I can barely make do with it, I’ll send me a copy in the mailbox later!”

“Hey, are you necessary?

If you want a detailed appraisal video, as a teaching resource, just let the High Court operate it again! ”

“Well, but didn’t we just ask him a question, are you embarrassed to speak?”

“Why are you embarrassed?

Besides, what is embarrassment?

We also follow the rules!

You can’t just come to a random person, say that your identification technology is awesome, let him touch the physical evidence of the case! ”

“Makes sense!

We agree that he has passed the test and identified physical evidence, which is already an exception! ”

……

Gao Ting vaguely heard the discussion of the captains and said with a smile

“You want to shoot a video of cutting fiber cross-sections as a teaching grant?

Anytime!

When this case is over, you can shoot as much as you want! ”

The captains quickly nodded in surprise.

And He Fudao hurriedly asked

“How did you analyze the identification data?”

Are you sure what that red spot is? ”

“It’s paint!”

Gao Ting said with a smile: “I cut a total of two fiber cross-sections, one with red spots and one without.

After separate identification, the cross-section without spots can determine the proportion of the elements of the fiber itself.

In the cross-sectional identification results with spots, after removing the same proportion of elements, the remaining elements are composed of red spots.

In general, red spots belong to the category of paints.

Not a common paint, though!

Many special precious elements are added, which have better performance in lubrication, anti-corrosion, moisture-proof, anti-cracking and other aspects.

This should be a high-end paint used on high-tech equipment!

This kind of paint is basically specially made.

From the perspective of element ratio, it should be the special paint of a certain part on the CT machine that scans the body of the hospital. ”

Hearing Gao Ting’s analysis, He Fudao’s eyes widened, especially when he heard Gao Ting point out the CT machine, he was directly stunned.

“Snap ~~~”

He applauded the high court a few times before laughing

“Gao Ting, you are indeed very powerful!

Your answer is exactly correct!

Even, to be honest, your answer completely exceeded my expectations, and it shocked me so much! ”

“It took us weeks last year and specialized microscopy experts to finally confirm that the tiny spots on it were paint.

Later, I found someone to identify it and confirmed that it was a special paint for high-tech equipment!

Checking the element ratio of various high-end paints has taken a lot of manpower and material resources.

My original idea was that you could identify the red spots as paint, and that would be remarkable.

Letting you identify the Cadillac of the year is not a problem at all.

Unexpectedly, you directly identified that the paint came from high-precision equipment.

Even, the hospital CT machine is right!

It’s remarkable, remarkable! ”

When the other investigators heard He Fudao’s explanation, they realized that there were so many doorways.

Only then did I understand how amazing the results of the High Court’s appraisal in just half an hour were.

Everyone stepped forward one after another to ask the High Court for specific identification details.

Gao Ting was also very enthusiastic and answered them one by one.

Seeing that the group of people were discussing more and more enthusiastically, and there was a great meaning of “urging the knee to talk for a long time”, Director Sun Changming quickly waved everyone away and scolded with a smile:

“You guys, it’s going to be discussed at this time!

I want to discuss, there will be time later.

Isn’t there still a case? ”

“Yes, yes, the case matters!”

“Gao Ting, I’ll leave you a phone call, and I will consult you if I have any questions in the future!”

“I’ll also leave it, the identification process you just had, I have a lot of details I want to ask!”

……

Everyone exchanged, and He Fudao took the high court to the laboratory where Cadillac parts were stored.

This time, most of the technicians did not follow.

Only He Fudao and a few technical captains introduced to the High Court

“In that corner, are the parts after disassembling Cadillac!”

“The sediment, burning matter, etc. found in it are all here!”

“The clothes, throwing knives, shoes, etc. on the three deceased are here!”

……

After the introduction, the technical team leaders also left the laboratory.

When examining physical evidence, they need to be highly concentrated, and they are afraid of disturbing the high court.

At the same time, this also gives the High Court great respect and trust!

Of course, in order to prevent some technicians from harboring ghosts, monitoring without dead ends is also installed in the laboratory.

The High Court, on the other hand, immediately began to identify all the physical evidence.

His previous prediction was correct, and the people in the technical brigade were not vegetarians.

In particular, the technical captains of each district are responsible for this appraisal.

Ordinary macroscopic physical evidence, they naturally cannot miss.

Even common microscopic physical evidence will certainly not escape their eyes.

Their professionalism can also be seen from the previous questions!

Therefore, the High Court is now focusing on some of the rarer trace evidence that requires special methods to find.

Even though Gao Ting’s proficiency in the skill of trace material evidence was perfect, the entire identification process took him an afternoon.

When he came out of the lab, it was evening again.

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