Piezoelectric Elements For Inkjet Piezo Transducer
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Following the U.S. Secretary of State Hillary’s visit to China, the U.S. Department of Homeland Security’s Deputy Minister Jan Holt has also conducted her first official visit to China since her tenure on the 10th. Hall Rutte, who visited Nanjing yesterday, delivered a speech saying that in order to further enrich the content of the China-US Strategic and Economic Dialogue Mechanism, the US Department of Homeland Security and the Ministry of Public Security of China have established high-level mutual visits and established an annual meeting mechanism, which opened up new Cooperation area. According to her, cyber security issues will be the focus of discussion in the next few rounds of meetings, and the two sides will discuss how to establish a specific cooperation mechanism.
Homeland security depends on cooperation with China
According to a news brief provided by the U.S. Department of Homeland, Dr. Holt, who is responsible for the day-to-day operation and management of the third largest department of the U.S. government and his delegation, visited China this time to enhance the current U.S. Department of Homeland Security. Cooperation with relevant Chinese authorities and seeking greater cooperation in cyber security, customs and global supply chain security. The delegation's trip includes Beijing, Nanjing and Shanghai.
In addition to meeting with the inviting party’s head of the Ministry of Public Security in China, Hall Rutte also met with Vice Minister of Foreign Affairs of China Cui Tiankai and Director of Civil Aviation Administration Li Jiaxiang in Beijing on issues related to Sino-U.S. relations, air cargo security, technology development and security standards. Wait.
"Compared with the characteristics of national security, such as strategicity, centralization, and high-level drive, homeland security is characterized by concreteness, decentralization, and bottom-level driving," Ruth focused on the speeches made at the Sino-U.S. Research Center at Nanjing University yesterday. The reasons for the cooperation between the United States and China in the area of ​​homeland security and its necessity, she said, are precisely because of the characteristics of homeland security that spans a country’s borders and its “grassroots†nature. “Homeland security cannot be done by our own (department) alone. It must rely on the entire people and partner countries."
Xinhua News Agency reported that Meng Jianzhu, the Chinese Minister of Public Security, had a fruitful exchange with Hall Holt who visited on the 10th to further comprehensively strengthen law enforcement cooperation between China and the United States. The two sides agreed that it is very important to strengthen cooperation and exchanges in pursuit of flight, global supply chain security, combating cybercrime and smuggling activities, immigration and immigration management, intellectual property protection, anti-narcotics and anti-terrorism. The two sides agreed to establish an annual meeting mechanism between the Chinese Ministry of Public Security and the Department of Homeland Security, and will maintain close communication on specific cooperation matters at the work level.
Avoid "cyber attack" issues
Ruth frankly stated in his speech yesterday that the United States and China still have many differences on the issue of network security, but the main issue at the moment is how the two sides set up a cooperation mechanism around cyber security. “Some suggestions have been received, but discussions will still be held. In the next few rounds (departmental year) of the conversation.†In her interaction with the students, she deliberately avoided the issue of the United States’ accusation of the so-called “China launched a cyber attack.â€
In the list of concrete results produced by the fourth round of strategic dialogue under the framework of the China-US Strategic and Economic Dialogue held in May this year, the decision between China and the United States to further deepen and promote law enforcement cooperation is also one of the main contents. The two parties also announced plans to arrange exchanges of visits between the Chinese People's Public Security University and the U.S. Federal Law Enforcement Training Center and other departments and agencies to strengthen information exchange. The two sides also decided to hold the 10th meeting of the Joint Liaison Group on Law Enforcement Cooperation between China and the United States this fall, and will give priority to areas such as enforcement of intellectual property rights, pursuit of flight, combating smuggling, repatriation, combating cybercrime, drug control, anti-corruption, judicial assistance, and recovery. Cooperation.
Cooperation between China and the United States in the field of security has also been extensive. There are also exchanges between the Chinese Ministry of Transport and the US Coast Guard. Just at the beginning of this month, China’s maritime “Hai Tour 31†round visited the United States in Hawaii and participated in a joint maritime search and rescue exercise organized by the China Maritime Safety Administration and the US Coast Guard. This is also the first time a joint maritime search and rescue exercise has been conducted by the Chinese and US maritime authorities.
"It is not just about talking on paper, but about producing tangible results." Ruth said yesterday
Applications: ultrasonic vibration tranducer for inkjet printer
Vibration mechanism of inkjet printer:
Generally, it is composed of piezoelectric ceramics and driving rods. By high-frequency electric excitation, piezo ceramics produce high-frequency ultrasonic vibration (above 60 kHz or higher), which is transmitted to the driving rod and generates high-frequency micro-displacement (back and forth expansion) at its front end.
Piezo ceramics components features :
1. High vibration amplitude and can withstand higher power.
2. The product has high reliability, strong maintainability, and is not easy to break down or off-line.
3. The frequency can be adjusted in a wide range, generally within the range of 10KHz.
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The present piezoelectric elements for Inkjet piezo transducer is following :
Piezo rings OD4*ID2*2.5mm price USD1.20/pc, 2000pcs
Material: PBaS-4
Fr.: 694 KHz ±5KHz
K33: ≥0.55
Tg loss <0.5%
Ct 60pF ±12.5%
Piezo rings OD4*ID2*2.5mm price USD1.20/pc, 2000pcs
Material: PSnN-5
Fr.: 626KHz ±5KHz
K33: ≥0.57
Tg loss < 2%
Ct 53pF ±12.5%
Piezo rings OD6*ID2.5*2mm price USD1.50/pc, 2000pcs
Material: PZT-41
Fr.: 785 KHz ±5KHz
K33: >0.53
Tg loss < 0.5%
Ct 107 pF ±12.5%
Piezo rod OD3*7mm price USD1.20/pc, 2000pcs
Material: PLiS-51
Fr.: 192 KHz ± 3KHz
K33: >0.62
Tg loss < 2%
Ct 18.7 pF ±12.5%
The United States and China still have many differences on the issue of network security
Although the U.S. Asia-Pacific rebalancing strategy has triggered China’s concerns about the security situation in the region, the interaction between the two sides in the security field is still drawing wide attention, and it is slowly moving forward in trials.