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A major breakthrough! Successfully developed

2025-02-01 Category: technology Views(54) Comments(0)

The reporter recently learned from Nankai University that Nankai University, together with the City University of Hong Kong, successfully developed a thin-film lithium niobate photonic millimeter-wave radar chip, making a major breakthrough in the field of millimeter-wave radar. This innovation has laid a solid foundation for the application of 6G communication, intelligent driving, accurate perception and other cutting-edge fields in the future.

Photonic millimeter-wave radar chip automotive radar applications.

Zhu Xia, a member of the research team and a professor at Nankai University, said that the chip is designed based on a 4-inch thin-film lithium niobate platform compatible with CMOS process, achieving centimeter-level distance and velocity detection resolution, and showing excellent accuracy in inverse synthetic aperture radar (ISAR) two-dimensional imaging, which was published in the journal Nature Photonics on January 27. This innovation effectively breaks through the technical bottleneck of traditional electronic radar in the narrow bandwidth of low frequency bands, and promotes the integrated photonic millimeter-wave radar system to a new level in terms of resolution, flexibility, applicability and integration.

Microwave photonics has a wide range of applications, including communications, radar, electronic warfare, etc. As an extension of this technology, microwave photonic radar breaks the trade-off between frequency and bandwidth of traditional electronic radar. Due to its unique properties, thin-film lithium niobate materials are ideal for high-performance electro-optical modulation. By combining advanced photonic integration materials and processes, microwave photonic radar is expected to achieve higher frequency, larger bandwidth, and smaller size in the future, bringing changes to automotive radar, airborne radar, and smart home.

Thin-film lithium niobate photonic millimeter-wave radar architecture and chip.

The research team successfully integrated the frequency doubling module and the echo deskew module on a single chip by optimizing the preparation technology to complete the efficient generation, processing and reception of millimeter-wave radar signals. To validate the radar’s performance, the team conducted a series of experiments, including ranging, velocity, and retrosynthetic aperture imaging tests. The results show that the radar can accurately detect range and velocity, and perform high-definition imaging of different targets.

Zhu Xia said that this achievement not only improves the performance of existing microwave photonic radar, but also sets a new benchmark for the development of high-performance and miniaturized photonic radar systems in the future. In the upcoming 6G era, this technology is expected to spark major changes in several fields, marking an important milestone in the development of microwave photonic radar technology.

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  • Stir-fried pork belly with green peppers: one pot can get the next dish of rice! The perfect duo of grease and crispness

    Friends! Today, I want Amway, a magical dish that a kitchen novice can also turn into a Chinese master in seconds - stir-fried pork belly with green peppers! It combines the three advantages of "meaty explosion", "simple operation" and "rice killer", and the whole process only takes ten minutes, and there is no need to change the pot, which can be called the ceiling of lazy happy dishes! ✨

    Ingredient preparation: The joy of gathering them all after a walk around the vegetable market

    • The main coffee debuts:

    • 200g pork belly (choose fat and thin, fat is the soul!) ）

    • 2 green peppers (Screw peppers are recommended, they are spicy enough!) Can't eat spicy peppers)

    • Golden Supporting Role: 1 piece of ginger, 2 cloves of garlic

    • Magic seasoning: 10ml light soy sauce, 5ml cooking wine, 2g salt, 3g starch, 1g sugar (secretly fresh)

    Steps: Handicap Friendly Operation Guide

    Step 1: Meat Metamorphosis - Thin slicing is the key to tenderness!

    • Throw the pork belly in the refrigerator and freeze it for half an hour before cutting it to instantly unlock the "Thin as a Cicada's Wings" achievement!

    • Shred the ginger, chop the garlic into crumpy pieces, remove the seeds of the green pepper and break it into irregular pieces (irregular to hang the sauce!). ）

    Lazy philosophy: can't you do knife work? When you buy meat, let the boss cut it for you!

    Step 2: Ritual of curing meat – inject soul into the meat slices

    Throw the meat slices into a bowl, add 5ml light soy sauce + 5ml cooking wine + 2g salt + 3g starch, and stir wildly until each slice of meat is coated with "soy sauce armor". Wait for 15 minutes and let the meat secretly absorb the salty buff~

    Scientific explanation: Starch can make the meat tender to the point of slippery, and cooking wine is responsible for dispelling the sadness (fishy smell) of pigs!

    Step 3: Oil-free fried meat Dafa - grease carnival

    • Heat the pot and serve the marinated pork belly directly! That's right, no oil!

    • Fry slowly over low heat, watch the meat slices "Zilazila" twist your body, the fat oozes out like a small vault, and fry until the meat slices curl up into sexy small waves.

    ⚠️ Key alert: Don't pour the fried lard! This is the natural highlight of the subsequent stir-fry!

    Step 4: Green Pepper Highlight Moment - Crispy and Tender Defense

    • Sauté ginger and garlic with lard in a pot until fragrant, and pour in green pepper cubes when fragrant!

    • Stir-fry over medium heat for 30 seconds, and pour in the pork belly immediately when the surface of the green pepper is covered with "tiger skin lines"!

    Taste secret: Stir-fry the green pepper until it is medium-cooked, and crisp and raw is its life!

    Step 5: Sauce の Ultimate Fusion - Infused with the soul of dry rice

    Add 5ml of light soy sauce + 1g of sugar, and turn over the heat for 10 seconds! Wrap every slice of meat and green pepper in a shiny sauce, and the pan will air up to the ceiling!

    Dry rice man code: The soup is dried and then out of the pot, this is the dignity of bibimbap!

    Flavor Evaluation: A violent aesthetic that enters the soul

    The burnt pork belly has a slightly crispy edge, bite down the grease and put fireworks in the mouth; The green pepper is crispy and spicy, arrogantly stimulating the taste buds! The salty and fresh soy sauce and the subtle sweetness of the sugar dance tango on the tip of the tongue, and eating three bowls of rice in a row is the basic respect for this dish!

    Brain Hole Small Theater

    • Migrant worker speedrun version: marinate the meat one night in advance, and go home five minutes to cook!

    • Carb Maniac Version: Cover directly on the noodles and become luxurious noodles in seconds!

    • Vegan-friendly version: Replace the pork belly with king oyster mushrooms and pretend to be eating meat~

    ✨ Today's kitchen quote ✨

    "Stir-fried meat with green peppers and rice, don't change it for a fairy!" Grab the spatula and exchange 10 minutes for a happy dinner tonight!

  • Wednesday, March 26 Briefing , 60 seconds a day to read the world

    1. Four warnings of cold wave, strong wind, sandstorm and fog will be issued at the same time: the local temperature in North China, Jianghuai, Jiangnan and other places will exceed 20 °C, and there will be strong sandstorms in Xinjiang, Inner Mongolia, Gansu and other places;

    2. A mountain fire broke out in Huguan County, Shanxi, nearly 3,000 people came to the scene to extinguish it, and there were no casualties at present.

    3. Railway department: 16.13 million train tickets have been sold during the Qingming holiday, and the demand for short- and medium-distance passengers during the festival is strong, and the remaining tickets in some sections are sufficient;

    4. The China Consumers Association issued a reminder: do not open "password-free payment" for online shopping unless necessary, and "password-free payment" is easy to become a loophole;

    5. Sichuan Hope Primary School spent more than 14,000 yuan to purchase SLR, and the online price was only 631 yuan? The local education bureau reported that the supplier had replaced the camera, and some personnel were disposed of;

    6. Hundreds of teachers were trapped by "high-paying online classes": after paying information fees, they taught group fake students online, and the police have intervened;

    7. World preliminaries: The national football team lost 0-2 to Australia at home, suffered three consecutive defeats in the round of 18, and missed the World Cup;

    8. Tencent announced that QQ will no longer support users to post and browse other people's short videos, and users' past short videos will be automatically saved to QQ Zone;

    9. The DeepSeek-V3 model has been quietly updated: the programming ability of the new version has been greatly improved, and there is a more relaxed open source agreement, Kai-Fu Lee said: narrowing the gap between China and the United States AI to 3 months;

    10. Qi Guojun, a top artificial intelligence expert, returned from the United States, joined Westlake University, went to Gates' house to eat barbecue, and won the Huawei President Award;

    11. Trump's plan to charge docking fees for Chinese ships has been warned by many industries in the United States: it is not in the national interest and will only backfire;

    12. Trump announced a 25% tariff on countries that buy oil and gas from Venezuela, and the Ministry of Foreign Affairs responded: calling on the United States to stop interfering in Venezuela's internal affairs;

    13. US media: An explosive device was found at the Tesla sales center in Texas, USA, which has been dismantled, and the FBI has intervened in the investigation; Attacks on Tesla in at least nine states across the United States, with vehicles and charging stations set on fire;

    14. Foreign media: Senior U.S. officials set up a group to talk about the plan of the air raid on Yemen, mistakenly pulled reporters into the group chat, the chat records were exposed, the U.S. lawmakers called for a thorough investigation and correction of the incident, and Trump said that the leak of the group chat was not a serious problem;

    15. Foreign media: The US-Russia talks ended and lasted more than 12 hours; The Russian side said that no joint statement was reached, and the content of the talks was not announced; The United States said it had reached an agreement with Russia and Ukraine on the safety of navigation in the Black Sea;

    When someone pushes you down from a high place, it is the best time for you to spread your wings and fly high.

  • Waking up in the middle of the night to drink water hurts your body more than staying up late to drink? Doctor: Wake up in the middle of the night and do less of these things

    When you suddenly wake up in the silence of the night, do you feel like your body is sending you some kind of signal? Many people instinctively get up and drink water, but they don't realize that this simple action can have unexpected effects on health. Waking up at night, for most people, may be just a small episode in life, but when it becomes a habit, its impact on the body cannot be ignored.

    Every signal in our body has the science behind it, is waking up at night to drink water in response to the body's natural needs, or is it a potential health hazard? In addition, in addition to drinking water, what are some other common behaviors when waking up during the night that may inadvertently harm our body?

    The truth about waking up at night to drink water: quenching thirst or disturbing sleep?

    When we wake up at night feeling thirsty, it's natural to want to drink water. However, there may be an impact on sleep quality hidden behind this simple behavior. Physiologically, the human body naturally reduces urine production at night, helping us to maintain a long sleep. Waking up frequently to drink water may not only interrupt this natural rhythm, but may also increase the number of times you wake up to go to the toilet during the night, further affecting sleep quality.

    How to hydrate smartly?

    Quantity control: Avoid drinking plenty of water within two hours before bedtime to ensure that your sleep is not interrupted by frequent urination at night.

    Qualitative choice: Choose warm water or water with magnesium to help relax the body and promote better sleep.

    Things to avoid when waking up in the middle of the night: Protect your night's tranquility

    1. Flipping electronic devices: interference of light

    Exposure to electronic devices at night is not only due to the effects of blue light, but also because content stimuli can overactive the brain and make it difficult to fall asleep again.

    2. Overthinking: Mental burden

    When you wake up at night, avoid thinking about difficult problems at work or in life, these activities can put your brain into a state of alertness and away from sleep.

    3. Nighttime eating: Digestive disturbances

    The digestion of food takes time and energy, and eating at night can cause stomach upset and interfere with sleep.

    4. Strenuous exercise: A surge of energy

    Although exercise can help improve sleep quality, strenuous exercise at night can over-excite the body and prevent you from falling asleep quickly.

    Strategies to improve your nighttime waking habits: Get back to a good night's sleep

    Bedtime preparation: a tranquil ritual

    Environmental Adjustment: Make sure your sleeping environment is comfortable, quiet, with the right temperature and light.

    Relax: Try deep breathing, a hot bath, or light yoga to help your body relax and prepare for sleep.

    Sleep hygiene: regular rhythms

    Routine: Go to bed and wake up at the same time as much as possible, even on weekends, to help regulate your body's body clock.

    Relaxation Techniques: The Art of Calming the Mind

    Meditation and breathing: Learn to use meditation or deep breathing techniques to manage anxiety when waking up at night, promoting falling asleep again.

    With these practical strategies and suggestions, we can effectively manage and improve the habit of waking up at night, improve sleep quality, and maintain physical and mental health. Remember, a healthy lifestyle and good sleep hygiene are key to maintaining quality sleep.

  • It is not meat, but it is more fragrant than meat, it is most suitable for spring, it does not help digestion, and the whole family loves to eat it

    With the arrival of spring, we have not only ushered in the season of flowers, but also ushered in a fresher and more diverse selection of ingredients. In such a season, there is a special ingredient that has become a new favorite on many families' tables – and that is the king oyster mushroom. This ingredient, which is neither meat nor vegetables, has won the favor of countless food lovers with its unique meat texture and delicious aroma. Its appearance seems to tell us that even without meat, our table can still be colorful and fragrant.

    The charm of the king oyster mushroom lies not only in its meat-like taste, but also in its health value. In spring, people often need ingredients that nourish the body without causing fire, and the king oyster mushroom meets this need. It is not hot, easy to digest, and rich in protein and various trace elements is very beneficial to the body. What's more, it is suitable for people of all ages, whether it is children or the elderly.

    Recommended recipe 1: Pleurotus eryngii mushroom and black pepper beef tenderloin

    This dish perfectly combines the fleshy taste of the oyster mushrooms with the freshness of the beef, and the spicy black pepper makes the whole dish layered, with both the fragrance of the oyster mushrooms and the richness of the beef. Pleurotus eryngii mushrooms are rich in dietary fiber to help promote intestinal health, while beef's high protein is an effective way to replenish the nutrients needed by the body, making it a delicious and healthy dish.

    Main ingredients: king oyster mushrooms, beef tenderloin, black pepper paste, onion, salt, cooking oil

    Here's how:

    Slice the oyster mushrooms into strips, slice the beef tenderloin, and shred the onion for later use.

    After the oil is heated in the pot, fry the beef tenderloin slices until they change color, then remove them and set aside.

    Add oyster mushrooms and onion to stir-fry in the same pot, and add an appropriate amount of black pepper sauce to taste.

    Finally, return the beef tenderloin slices to the pot, stir-fry quickly and evenly, add salt to taste and remove from the pot.

    Recommended recipe 2: Chicken soup with oyster mushrooms

    Chicken soup with king oyster mushrooms is a healthy soup that perfectly combines the deliciousness of king oyster mushrooms with the nourishment of chicken. This soup not only nourishes the body, but also boosts immunity, making it especially suitable for spring.

    Main ingredients: oyster mushrooms, chicken, ginger slices, wolfberry, salt, water

    Here's how:

    Wash the chicken and cut into cubes, slice the oyster mushrooms, and slice the ginger for later use.

    Add water to a pot, add chicken and ginger slices, bring to a boil over high heat, skim off the foam, turn to low heat and simmer.

    When the chicken is half-cooked, add the oyster mushrooms and continue to simmer.

    After the soup is cooked, add the goji berries, cook for a few more minutes, and finally add salt to taste.

    Recommended recipe 3: Stir-fry with oyster mushroom

    Stir-fried oyster mushroom is a simple and healthy vegetarian dish that showcases the deliciousness of the oyster mushroom itself through simple seasoning. This dish is rich in vitamins and minerals that help to cleanse the body of toxins and boost the body's metabolism.

    Main ingredients: oyster mushrooms, carrots, green peppers, minced garlic, soy sauce, cooking oil, salt

    Here's how:

    Slice the oyster mushrooms and carrots, shred the green peppers, and mince the garlic for later use.

    Add oil to the pan, heat and add minced garlic and stir-fry until fragrant.

    Add all the vegetables and stir-fry quickly, add soy sauce and salt to taste.

    Stir-fry until the vegetables are broken.

    Recommended recipe 4: Oyster mushroom skewers

    Pleurotus eryngii kebabs are a popular outdoor barbecue dish that combines the meaty taste of the oyster mushrooms with the aroma of barbecue. This cooking method not only retains the nutrients of the king oyster mushroom, but also adds its unique smoky flavor that is suitable for a delicious snack at a party.

    Main ingredients: king oyster mushrooms, barbecue sauce, chili powder, cumin powder, cooking oil, bamboo skewers

    Here's how:

    Cut the oyster mushrooms into chunks suitable for skewers and use a kitchen paper towel to absorb moisture from the surface.

    Mix the barbecue sauce, paprika, cumin powder and a small amount of cooking oil to make the marinade.

    Spread the oyster mushroom cubes evenly with the marinade and skewer them on bamboo skewers.

    Once the oven is preheated, place the skewered oyster mushrooms in the grill and turn them over halfway to ensure that both sides are evenly colored.

    Bake until golden brown and slightly charred on the surface, then remove and enjoy.

    From home-cooked meals to holiday party bites, Pleurotus eryngii mushrooms showcase the infinite possibilities of being a gastronomic ingredient with their versatile cooking methods and rich nutritional value. Whether you're a meat-loving eater or a healthy eater, you'll find a way to enjoy the flavor of oyster mushrooms in these recipes.

  • Fudan graduate students drop out and set up a stall with a daily income of 700 yuan: ignore the worldly vision and do what you want to do

    Less than five o'clock in the afternoon on Wednesday, in the queue of stalls at the north gate of the east area of the West China Campus of Sichuan University, a young man's booth was particularly eye-catching, with no signboards and no advertisements, but it was crowded with people in the queue, and the queue turned an S-shaped bend at the intersection along the walking path.

    In the crowd, diners are holding their mobile phones, some are taking pictures, some are introducing the "boss" to their companions, and as time goes by, the line is getting longer and longer, and there is no loosening at all.

    In front of his stall, the simple small food truck on the left neatly placed with folded ear root, coriander, chili sauce, dried radish and other seasoning ingredients, and the stainless steel thermos bucket on the right is filled with steaming mashed potatoes.

    Looking at the slightly green "boss" in front of you, it is hard for you to imagine that he was a graduate student in the Department of Public Health of Fudan University a year ago, and now he is living the life he wants.

    There was a long queue in front of Fei Yu's booth

    01

    The first experience of setting up a stall

    On the first day, he was "educated" by 50 pounds of potatoes

    Friends came out to help

    Time back to March 10th, this is Fei Yu's first day out of the stall, before setting up the stall, he warmed up on the social platform early, telling his classmates and friends that he was going to start setting up a stall. Although everyone's support is very high, he still has no bottom in his heart, everything is full of hope and unknown, nervousness and expectation are intertwined in his heart.

    At one o'clock in the afternoon, there was the sound of the brakes of the tricycle downstairs, and more than fifty catties of yellow and clear potato pieces were lying quietly in the sack, he took a deep breath, steadied his horse, grabbed the two corners of the sack tightly with both hands, exerted all his strength, gritted his teeth, and carried the heavy potatoes along the narrow and dim stairs to the third floor step by step.

    After moving the potatoes into the house, he quickly began the busy production process. should be full of energy, but the reality poured a basin of cold water on him, more than 50 catties of potatoes are piled up in the corner, like a hill, but the pot at home is like a small horse-drawn cart to deal with them, and he has no choice but to steam them three times.

    At the same time, the green onions, coriander, folded ear roots, and sour radishes on the board are also waiting for Fei Yu's "pointing". He held a kitchen knife in his hand, the blade fell briskly, the green onion instantly shattered into dots of green, the coriander exuded a unique aroma, the special taste of the folded ear root also spread, and the sour radish was cut into even small cubes, each piece was crystal clear.

    After the potatoes were steamed until they were soft and glutinous, he hurriedly crushed the mashed potatoes with a wooden shovel, and then pureed them with a blender and put them into a thermos bucket.

    Seeing that the time for the stall is imminent, there is less than an hour left, and the work at hand is scattered. Fei Yu was anxious, like a headless fly scurrying around the house, suddenly, he grabbed his mobile phone and called for help in the group of classmates: "Friends, I'm going to be 'cool', the rivers and lakes are in emergency!" ”

    Fei Yu makes mashed potatoes at the stall

    As soon as the news was issued, it was like a rallying cry. After a while, a few friends roared to the door on a shared bicycle, and as soon as they entered the door, they rolled up their sleeves and started to work without saying a word. Some people relay the stir-fry of the sauce and meat foam, and they are so spicy that they cough and don't stop; Someone quickly cut the material, and the kitchen knife struck on the board. Everyone, you bump me, I touch you, you are in a hurry, and the whole kitchen is a mess, like playing the realistic version of "Break Up Kitchen". After a busy day, several people finally pushed the food truck to the stall at the planned time to start this unknown journey of setting up a stall.

    "Among the people who came to support me on the first day, there were many acquaintances, and many classmates came to tie them up for me after reading my post, and they sold out all the mashed potatoes in more than an hour, with a turnover of more than 700 yuan." Recalling the scene of setting up the stall on the first day, Fei Yu had a smile on his face.

    Fei Yu makes mashed potatoes at the stall

    02

    Face your heart

    Ignore the worldly vision and do what you want

    A year ago, Fei Yu was a graduate student in the Department of Public Health at Fudan University, and in the eyes of everyone, the future was bright. But one day in February 2024, he decided to put a hard brake on his life, and he decided to drop out of school. "I want to live my life differently."

    During the year of being unemployed at home, Fei Yu fell into thinking about the future and kept asking himself what he really wanted. At this time, the idea of setting up a stall quietly emerged. He remembered the days when Kong Ming lanterns and hydrogen balloons were sold, although they were simple, they were full of happiness. In his sophomore year, he devoted himself to phone card sales, and with his excellent communication skills and sales strategy, he won the title of sales champion in one fell swoop. These past bits and pieces, like pieces of a jigsaw puzzle, piece together a clear understanding of his professional suitability - it turns out that he is more suitable to show his strength in the field of sales.

    The road to setting up a stall was not entirely smooth, and the biggest obstacle came from his parents, "They feel that it is a pity that they have read so many books and put in so much effort, and now they choose to set up a stall." Of course, more pressure comes from the world's eyes, "parents will feel a little embarrassed in front of relatives and friends." Although he verbally objected, Fei Yu's strong insistence made the second elder feel that maybe he could also let him break through.

    "You see, it turns out that my choice is pretty good." Fei Yu said that since he officially set up his stall on March 10, his influence on social platforms has increased day by day, and now he has formed two fan groups. One group has long been full of 500 members, and the number of members in the other group is growing rapidly, now approaching 400. According to Fei Yu, the vast majority of the group are his alumni. The most important thing these enthusiastic fans care about every day is whether he will go out of the stall that day, and if so, where will he "open". Everyone was looking forward to saying hello to him in front of the booth and cheering him on.

    Of course, Fei Yu also has his own little secrets, he admitted frankly that when he shared his experience of dropping out of school and setting up a stall on social platforms, he deliberately blocked the teachers. Although he never regretted the decision to drop out of school and set up a stall, deep down he was still afraid of disappointing his teacher's expectations and disappointing his former teacher.

    Fei Yu's experience caused a lot of shock on the Internet, and many people sent messages one after another. They confide that they are in a similar predicament, longing for change, but are held back by a lack of courage.

    Everyone praised Fei Yu for his courage and daring to make choices that they didn't dare to make. In reality, Fei Yu is also using his own actions to convey his heart to those confused friends in the comment area and private messages: you must muster up courage, face your heart, and ask yourself what you want. Once you have a clear direction, you should make bold choices, make bold changes, bravely step out of your comfort zone, stop running away, and take the initiative to meet new challenges in life. Only by facing oneself can we start a different and wonderful life.

  • People who are particularly "powerful" understand these three truths

    In life, those who make you feel particularly "powerful" are not born with extraordinary talents, but understand three truths.

    Give it your all and leave no regrets

    Their "greatness" is that they are powerful in their efforts and persistence beyond ordinary people.
    If you want to shine in front of people, you have to work a hundred times harder to store heat and silently climb mountains and mountains.


    Life is still long, so let's go all out for your dreams. If you haven't tried, how do you know you can't get there?


    Go all out, not to make others envious, but for a warm and bright life without regrets.

    The past is cleared, and the clouds are light and the wind is light

    Sometimes, experiencing some things is to make us understand that "the fragrance of plum blossoms comes from the bitter cold"; There are also some people who appear to accompany us for a while, so that we can experience what it is to love and be loved. Dwelling on regrets and dwelling on the past is the greatest harm to yourself.


    All the past is prologue. Only when a person knows how to let go of the past can he meet the future with light steps. The broadening of the pattern of life sometimes depends on the wisdom and courage of timely clearance.


    The initiative in life is often in the hands of those who dare to start anew. In the bag of life, you can go further by carrying a little less.

    You have to give your best in life, but don't panic too much

    In many cases, only by choosing to do our best can we reduce regrets for our future selves. It is the best way to live by interweaving and integrating a clear conscience after going all out and a calm and calm mentality.


    In the long river of life, there are stormy waves crashing on the shore, and there are soft winds and rains, if you don't panic, the world will not panic. Let go of all the worries and sorrows in your heart, and do a good job every day, you will find that life is full of sunshine and hope.


    The rest of your life is long, don't panic, the sun goes down, and there is moonlight. Go all out, live lightly, live up to others, and live up to yourself.

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