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1.Xcerra to CFIUS mention was 4 billion acquisition of China Core;
Set micro-wire news, the US semiconductor group Xcerra once again to the U.S. Foreign Investment Commission (CFIUS) to submit an application, hoping to obtain approval to complete the acquisition of Chinese buyers made the proposal.
Xcerra agreed in April to accept a $ 580 million takeover offer from Unic Capital Management, a China-backed official investment management firm, that is subject to CFIUS approval, although the latter did not approve the Xcerra deal within the first 75 days Reapplying to CFIUS will give Xcerra another 75 days to await approval.
Dave Tacelli, chief executive of Xcerra, said that there has been constructive communication with CFIUS to ensure that the Commission understands the nature of the industry in order to approve the transaction, but the committee has indicated that it may take extra time to make a decision.
On August 17, it was reported that the Chinese acquisition of Xcerra, a semiconductor test plant in the United States, may have changed halfway because of concerns about national security. According to the Wall Street Journal, another U.S. rival, Cohu, tried to stymie to stop Xcerra from crossing the door.
According to the report, Cohu made a small report directly to the U.S. Foreign Investment Commission (CFIUS), pointing to the national security concerns China made when it acquired Xcerra.
In response to the allegations, Xcerra said in response to a query from Reuters that Cohu's affair is nonexistent as Xcerra does not own any of its customers' key IPs and that the semiconductor company does not share important information with test plants or agencies.
2. Domestic storage of key core materials debut "Science";
Academician Wang Xi awarded Song Zhitang team awards and bonuses
Shanghai Institute of Microsystems, National 02 Wang Xi, deputy chief of special speech
Song Zhitang researcher for the related research report
Science Net December 22 Shanghai News (Xinhua Huang Xin) In order to encourage the majority of scientific and technological personnel into the main battlefield of science and technology innovation, promote academic prosperity and encourage the growth of science and technology personnel, the Chinese Academy of Sciences in Shanghai Microsystems held this afternoon, high-level article publishing report, recognition Song Zhitang's group of researchers in the high-speed, low-power new Sc-Sb-Te phase change memory material research major scientific discovery.It is reported that the Shanghai Institute of Microsystem and Information Technology joint SMIC Manufacturing Co., Ltd., choose to embed Type phase change memory (PCRAM) as the starting point, in the national key research and development project nanotechnology key special, national science and technology major project 'very large scale integrated circuit manufacturing equipment and complete sets of technology' (02 special), the National Natural Science Foundation of China, Chinese Academy of Sciences A type of strategic pilot science and technology projects, Shanghai's leading talent, the Shanghai Municipal Science and Technology Commission and other projects funded by more than ten years of research, in the storage material screening, memory chip design, PCRAM basic manufacturing technology made a series of important science and technology progress.
It is reported that the relevant research results with independent intellectual property rights (International Patent PCT / CN2016 / 096334, China Patent 201510697470.2.) November 9 this year, "Science" periodical entitled 'Reducing the stochasticity of crystal nucleation to enable subnanosecond memory writing' online Published this important research results and published in the journal on December 15. This is an important scholarly paper published in the Science and Technology Department of Shanghai Micro System and the first academic paper in the field of key core materials of advanced storage technology in China .
The report was presided over by Qi Ming, secretary of the party committee of Shanghai Micro-system Institute; Xie Xiaoming, deputy director read out the decision of Shanghai Microsystems on PCRAM project team. Academician of Chinese Academy of Sciences, Director of Shanghai Microsystems Institute and Wang Xi, The team awards and bonuses.
Wang Xi said in his speech that under the leadership of Professor Song Zhitang, the PCRAM team deserves congratulations on the achievements made after nearly 15 years of hard work since 2002. He hopes scientists can make great achievements and further Based on the achievement of greater achievements. Can face the world's scientific and technological frontier, facing the major national needs, facing the main battlefield of the national economy, helping innovation-driven, and strive to practice the CAS in the new era of guidelines for the hospital, into the Shanghai Science and Innovation Center to make new Contributions.
The integrated circuit industry is a national strategic emerging industry in the 13th Five-Year Plan period.Memory is one of the most important technologies in integrated circuits and an important manifestation of the core competitiveness of the country.As a global manufacturing base of electronic products, memory self-sufficiency is still relatively Weakness: The monopoly of memory technologies and products by large foreign semiconductor companies such as Samsung and Intel abroad poses a significant threat to the development of information industry and information security in our country. It is imminent to develop a new type of semiconductor memory technology with our own intellectual property rights.
At present, the commonly used phase change memory material in the world is Ge-Sb-Te. In recent years, the development of integrated circuit technology has various performance indexes such as power consumption, life expectancy, size and endurance of the memory chip Have put forward higher requirements, scientists from all over the world are stepping up research and development of storage materials.
Song Zhitang, a research team of Shanghai Institute of Microsystem and Information Technology, CAS, made a major breakthrough in the research of new phase change memory materials. Under the guidance of the autophase phase transition octahedron element and face-centered cubic metastability theory, Octahedral lattice and electronic structure to match the research and development ideas to design a new type of phase change material to stabilize the octahedron as a nucleation center to reduce the randomness of amorphous nucleation phase transition material to achieve high speed crystallization through the first The theoretical calculations and molecular dynamics simulation show that scandium and iridium (Sc, Y) are preferred as doping elements among many transitional elements, and they are tested by memory cell storage performance test, especially for high speed flash memory cell. The Sc-Sb-Te phase-change material with high speed, low power consumption, long life and high stability has been realized by the Sc-Sb-Te phase change memory device prepared by 0.13um CMOS process Picosecond high-speed reversible write-erase operation with a cycle life of more than 107. Compared with the conventional Ge-Sb-Te based phase change memory device, the operational power consumption is reduced by 90% and the data retention of ten years is comparable. By further optimizing Materials and miniature device Sc-Sb-Te-based PCRAM synthesis performance will be further enhanced.Research shows that Sc-Te stable octahedron as the core of the nucleation and growth is the main reason for high-speed, low power consumption; lattice and electronic structure match is long Life of the main reasons; stable octahedral restraint FCCHEX transformation is also one of the reasons for high-speed, low power consumption.
It is understood that the major discovery of Sc-Sb-Te phase change memory materials from the Shanghai Institute of Microsystem CAS's long-term research work in the phase-change memory accumulation.The research team also found that the international production of Ge-Sb- Te performance of the better new self-Ti-Sb-Te phase change memory materials; independent research and development with the international advanced level of double-channel isolation 4F2 high-density diode technology; developed China's first 8Mb PCRAM test chip; developed Of the 0.13umCMOS process-based printer with embedded PCRAM products have received the first 7.5 million orders; developed based on 40nm high-density diode technology, has the smallest unit size of the self-read memory has begun sampling; developed 40nm node PCRAM test chip unit yield up to 99.999% or more, and even without correction 4Mb, 64Mb PCRAM chip, is now available to customers in the advanced information system trial.
At the meeting, Song Zhitang, a team of fellow researchers, shared the research and development trends of phase change storage and the team's unswerving exploration of technological innovation and industrialization.
He said that these new phase change material performance, the physical solution to the memory low-power and high-speed erase problems, coupled with self-developed chip has been used in high-speed chip readout (US8947924), on Can form a new generation of the most advanced memory.If the high-density, three-dimensional memory chip to further verify the material for our breakthrough in foreign technology barriers, the development of independent intellectual property rights of memory chips of great value; to achieve our memory technology Leap-forward development, promoting the prosperity of China's information industry and safeguarding the information security in our country are of strategic importance.
Director of Information Science Department of NSFC Pan Qing, Director of Technical Science Department, Frontier Science and Education Bureau, Chinese Academy of Sciences Kong Minghui, Professor Zhang Xing, Peking University 02 Ma Zhenyu, Expert of National Science and Technology Major Management Office, Shanghai Science and Technology Commission, Deputy Director Song Yang, Director Chen Ming, Shanghai IC R & D Center Chairman Zhao Yuhang, Director of Shanghai Nanocrystal Center Min Guoquan, Executive Vice President of Semiconductor Manufacturing International Corporation Zhou Meisheng, Wacker Road, and Shanghai Microsystem Center More cadres, scientific research backbone, graduate students attended the report.
Experts at the conference said that they persistently moved Song Zhitang and his team to adhere to the principle of "striving for success." Ten years of grinding their sword and looking forward to the team's unforgettable initial breakthrough in basic research while making progress in originality and major breakthroughs in the industrialization of scientific and technological achievements and serving The main battlefield for national economic construction has made even greater achievements.
3. Peking University nano-laser field landing "Nature · Communications" and "Science · Progress";
Recently, researcher Ma Renmin and his collaborators at Peking University School of Physics proved that plasmonic nanolasers can be smaller, faster and have lower threshold and power consumption than conventional lasers through theoretical analysis and system experiments. Plasmon nanolasers are essentially different from conventional lasers in that their radiative fields can all be in the form of surface plasmons formed by free electron oscillations in the metal. Related work was reviewed by Nature, Communications and Science, respectively "Magazine is reported under the heading 'Unusual scaling laws for plasmonic nanolasers beyond the diffraction limit' and 'Imaging the dark emission of spasers'.
The development of lasers has deepened people's understanding of the interaction between light and matter and greatly promoted the development of modern science and technology.It has been one of the core research directions in the field of lasers since the invention of lasers.Its aim is to obtain Smaller size, higher modulation speed and lower power laser.For example, the application of laser on the optical interconnection on the chip directly requires the characteristic scale of the laser to be close to the electronic device, and its power consumption should be less than that of the mature electric interconnection. The power consumption of the laser is in a positive correlation with its dimensions, and the power consumption per decade of the fly-thru 10 directly requires that the mode volume of the laser be less than about 0.02 wavelength cubes.
Figure 1 Schematic of the basic principle of a conventional laser (left) and a nano-laser (right)
The miniaturization of lasers over the past 40 years has seen tremendous success with the development of miniaturized lasers including vertical cavity surface emitting lasers (VCSELs), microdisk lasers, photonic crystal lasers, and nanowire lasers.However, in these conventional optical lasers In the gain medium, photons are amplified by stimulated radiation. Therefore, the size of the laser is limited by the optical diffraction limit, and the smallest dimension in each dimension is greater than half the wavelength, making miniaturization difficult (Figure 1, left).
Plasmonic nanolaser is a new type of laser with a three-dimensional physical scale which can be much smaller than the outgoing wavelength at the same time (Figure 1, right) .The nano-laser is different from the traditional optical lasers by the enlargement of the surface formed by free electrons oscillation in metal Plasmons, rather than photons, allowing for the limitation of the optical field on the order of magnitude of 10 nanometers deep sub-wavelength.However, the spatial localization of electromagnetic fields caused by the use of plasmonic effects in nanometer lasers inevitably accompanies metal absorption Therefore, the issue of whether nanolasers have the performance advantages over conventional lasers has been debated.
Researchers and their collaborators have systematically optimized gain materials, metal materials, and resonators to reduce the lasing threshold of nanolasers to 10 kilowatts per square centimeter, which is two orders of magnitude lower than the lowest reported nanolaser threshold , For the first time reduced the threshold of nanolasers to laser thresholds for commercially available lasers.They further systematically investigated more than 100 sets of plasmonic nanolasers and more than 100 groups of metal-free control samples, The key performance of meta-nano lasers with Scaling Laws proves that nano-lasers can have smaller physical size, faster modulation speed, lower threshold and power consumption at the nanoscale than traditional lasers. (Figure 2) This work was published in Nature and Communication (8, 1889, 2017).
Fig. 2 Plasmonic nanolasers can be smaller (a), lower in power consumption (b) and faster (c) than traditional optical lasers
In another work, published this year in Science Advances (3, e1601962, 2017), researcher and collaborator Ma Renmin used a radiation-leak microscopy technique to mimic the surface of nanolasers by momentum matching The coupling of dark and dark radiation to the far field realizes the direct imaging of the real space, the momentum space and the spectrum space, as shown in Figure 3. The results show that there is an essential difference between nanolasers and conventional lasers and that their radiation fields can all be free Surface plasmon polariton formed by electron oscillation.The work for the first time revealed that the radiant energy of a nanometer laser can be coupled to the surface plasmon of the propagation mode by one hundred percent, laying a foundation for further manipulation and application of the nanometer laser.
Figure 3 Nano-laser real space (a), momentum space (b) and frequency space (c) imaging
Peking University Ph.D. students and postdoctoral Wang Xingyuan as "natural communication" papers co-author; Peking University Ph.D. Chen Huazhou, 2011 undergraduates Hu Jiaqi and PhD student Wang as the "scientific progress" paper co-author; main collaborators Including Professor Dai Lun from Peking University and Professor Rupert Oulton from Imperial College London, and researcher Ma Renmin as the correspondent of the two dissertations. Both of these projects have been awarded the titles of 'Young Thousands', NSFC, Ministry of Science and Technology, State Key Laboratory of Structure and Mesoscopic Physics, and Collaborative Innovation Center of Quantum Materials Science.
Attached: Ma Renmin researcher laboratory home page: http://www.phy.pku.edu.cn/~renminma/ Peking University
4. Chinese Academy of Sciences built the largest laboratory equipment sharing platform
China news agency, Beijing, December 22 (Reporter Zhang Su) The reporter learned from the Chinese Academy of Sciences on the 22nd that the hospital has built up the online service and operation management system of the largest laboratory equipment in China and effectively promoted the social sharing of scientific research equipment and equipment.
The system is called 'Chinese Academy of Sciences equipment and equipment management platform V3.0 system', based on mobile applications, the Internet of things, cloud environment and open technology architecture from the end of 2016 has been in the Chinese Academy of Sciences 15 large instrumentation area Center, 114 Institute successfully applied.
According to statistics, on-line large-scale apparatus and equipment reached more than 8,000 sets, valued at more than 11 billion yuan, the number of system users reached 40,000 people. As of the end of November 2017, the sharing platform annual use of machine time has exceeded 10 million hours, processing orders Nearly 600,000 orders.
The data shows that this system enables idle scientific research equipment to move from 'hospital to' outpatient 'and realize social open sharing. Since V3.0 system went online for 1 year, it took more than 1.5 million hours to share out-of-hospital machines.
Acceptance expert evaluation, V3.0 system from the equipment booking, booking audit, testing analysis, sample registration to the cost of settlement of the experimental life-cycle management, a number of major scientific and technological innovations resulting from this.For example, Institute of Physics, Chinese Academy of Sciences Relying on Beijing's material science and nanotechnology large-scale instrument regional center superconducting public technology platform, in the study of iron-based superconducting constantly updated superconducting critical temperature records.
As well as the Institute of social services with V3.0 system services.Suzhou Institute of Nanotechnology and Nanotechnology rely on the platform, within a year for 120 research institutes, 220 university research teams and about 120 R & D enterprises to provide services, including for Suzhou Minxin Microelectronics Technology Co., Ltd. and Wei Qi Biotechnology Co., Ltd. to solve the laser invisible cutting process problems, so that a substantial increase in the enterprise yield.