The clinical application and advancement of robot-assisted McKeown minimally invasive esophagectomy for esophageal cancer

Robotic surgery systems,as emerging minimally invasive approaches,have been increasingly applied for the treatment of esophageal cancer because they provide a high-definition three-dimensional surgical view and mechanical rotating arms that surpass the limitations of human hands,greatly enhancing the accuracy and flexibility of surgical methods.Robot-assisted McKeown esophagectomy(RAME),a common type of robotic esophagectomy,has been gradually implemented with the aim of reducing postoperative complications,improving postoperative recovery and achieving better long-term survival.Multiple centers worldwide have reported and summarized their experiences with the RAME,and some have also discussed and analyzed its perioperative effects and survival prognosis compared with those of video-assisted minimally invasive esophagectomy.Compared to traditional surgery,the RAME has significant advantages in terms of lymph node dissection although there seems to be no difference in overall survival or disease-free survival.With the continuous advancement of technology and the development of robotic technology,further development and innovation are expected in the RAME field.This review elaborates on the prospects of the application and advancement of the RAME to provide a useful reference for clinical practice.

Large-area fabrication:The next target of perovskite light-emitting diodes

Perovskite materials show exciting potential for light-emitting diodes(LEDs)owing to their intrinsically high photoluminescence efficiency and color purity.The research focusing on perovskite light-emitting diodes(PeLEDs)has experienced an exponential growth in the past six years.The maximum external quantum efficiency of red,green,and blue PeLEDs has surpassed 20%,20%,and 10%,respectively.Nevertheless,the current PeLEDs are still in the laboratory stage,and the key for further development of PeLEDs is large-area fabrication.In this paper,we briefly discuss the similarities and differences between manufacturing high-quality and large-area PeLEDs and perovskite solar cells.Especially,the general technologies for fabricating large-area perovskite films are also introduced.The effect of charge transport layers and electrodes on large-area devices are discussed as well.Most importantly,we summarize the advances of large-area(active area≥30 mm^(2))PeLEDs reported since 2017,and describe the methods for optimizing large-area PeLEDs reported in the literature.Finally,the development perspective of PeLEDs is presented for the goal of highly efficient and large-area PeLED fabrication.It is of great significance for the application of PeLEDs in future display and lighting.

Application of FLAC3D in supporting engineering of deep foundation ditch

Based on the design principles of economic rationality and safety,multiple-pivot pile anchorage approach was used as the supporting engineering of a tall building with a deep foundation ditch.The designs,such as anchor arm,single pile and the whole,were set up in accordance with the calculations of the internal force from the equivalent beam and Yamagata Kunio methods.Moreover,the rationality of the design was estimated using the stability checks.FLAC3D was used for calculating the accuracy of the design.Using FLAC3D to simulating ditch cutting and supporting processes can obtain the equivalent results as the theory analysis in the displacement of ditch surrounding wall,the stress field and stress distribution.

Electrically tunable phase-change metasurface for dynamic infrared thermal camouflage

Dynamic infrared thermal camouflage technology has attracted extensive attention due to its ability to thermally conceal targets in various environmental backgrounds by tuning thermal emission.The use of phase change materials(PCMs)offers numerous advantages,including zero static power,rapid modulation rate,and large emissivity tuning range.However,existing PCM solutions still encounter several practical application challenges,such as temperature uniformity,amorphization achievement,and adaptability to different environments.In this paper,we present the design of an electrically controlled metal-insulator-metal thermal emitter based on a PCM metasurface,and numerically investigate its emissivity tunability,physical mechanisms,heat conduction,and thermal camouflage performance across different backgrounds.Furthermore,the influence of the quench rate on amorphization was studied to provide a guidance for evaluating and optimizing device structures.Simulation results reveal that the thermal emitter exhibits a wide spectral emissivity tuning range between 8 and 14μm,considerable quench rates for achieving amorphization,and the ability to provide thermal camouflage across a wide background temperature range.Therefore,it is anticipated that this contribution will promote the development of PCM-based thermal emitters for practical dynamic infrared thermal camouflage technology with broad applications in both civilian and military domains.

MXene(TiNT):Synthesis,characteristics and application as a thermo-optical switcher for all-optical wavelength tuning laser

Single frequency fiber lasers have attracted intense attention in the high precision measure,optical communication and Raman spectroscopy due to their special features including narrow spectral linewidth,low-intensity noise and fiber compatibility[1-5].Tunable fiber lasers with broad wavelength-sweeping range or fast wavelength-sweeping speed have become key components in dense wavelength division multiplexing(DWDM)transmission systems or high-resolution spectroscopy.

A scheme for simulating multi-level phase change photonics materials

Chalcogenide phase change materials(PCMs)have been extensively applied in data storage,and they are now being proposed for high resolution displays,holographic displays,reprogrammable photonics,and all-optical neural networks.These wide-ranging applications all exploit the radical property contrast between the PCMs’different structural phases,extremely fast switching speed,long-term stability,and low energy consumption.Designing PCM photonic devices requires an accurate model to predict the response of the device during phase transitions.Here,we describe an approach that accurately predicts the microstructure and optical response of phase change materials during laser induced heating.The framework couples the Gillespie Cellular Automata approach for modelling phase transitions with effective medium theory and Fresnel equations.The accuracy of the approach is verified by comparing the PCM’s optical response and microstructure evolution with the results of nanosecond laser switching experiments.We anticipate that this approach to simulating the switching response of PCMs will become an important component for designing and simulating programmable photonics devices.The method is particularly important for predicting the multi-level optical response of PCMs,which is important for all-optical neural networks and PCM-programmable perceptrons.

Thermally tunable microfiber knot resonator with flexible graphene heater

Efficiently tuning the output intensity of an optical device is of vital importance for the establishment of optical interconnects and networks.Thermo-optical modulation is an easily implemented and convenient approach and has been widely employed in photonic devices.In this paper,we proposed a novel thermo-optical modulator based on a microfiber knot resonator(MKR)and graphene heater.Upon applying voltage to graphene,the resonant property of the MKR could be thermally tuned with a maximum phase shift of 2.1π.Intensity modulation shows a fast optical response time thanks to the high thermal conductivity of graphene and the thin microfiber diameter of the MKR.

MXene-based high-performance all-optical modulators for actively Q-switched pulse generation

Q-switched fiber lasers are integral tools in science,industry,and medicine due to their advantages of flexibility,compactness,and reliability.All-optical strategies to generate ultrashort pulses have obtained considerable attention as they can modulate the intracavity Q factors without employing costly and complex electrically driven devices.Here,we propose a high-performance all-optical modulator for actively Q-switched pulse generation based on a microfiber knot resonator deposited with V2 CTxMXene.Experimental results show that the obtained Q-switching pulses exhibit a wide adjustment range of repetition rate from 1 k Hz to 20 k Hz,a high signal-tobackground contrast ratio of^55 d B,and a narrow pulse width of 8.82μs,indicating great potentials of providing a simple and viable solution in photonic applications.

All-optical PtSe2 silicon photonic modulator with ultra-high stability

All-optical modulation based on the photothermal effect of two-dimensional(2 D)materials shows great promise for all-optical signal processing and communication.In this work,an all-optical modulator with a 2 D Pt Se2-onsilicon structure based on a microring resonator is proposed and demonstrated utilizing the photothermal effect of Pt Se2.A tuning efficiency of 0.0040 nm·m W-1 is achieved,and the 10%–90%rise and decay times are 304μs and 284μs,respectively.The fabricated device exhibits a long-term air stability of more than 3 months.The experimental results prove that 2 D Pt Se2 has great potential for optical modulation on a silicon photonic platform.