Wavelength Ultraviolet Light Research Articles

Creativity of Nanofiber Materials and Application in the Expressive Power of Manual Tie-Dyeing Process

Traditional printing and tie-dyeing are an important part of Chinese handicrafts. It consists of three main techniques: batik, tie-dye, and multi-layer dyeing. Among the traditional printing and dyeing techniques, tie-dyeing creates an ever-changing visual artistic effect due to the diversity of its production methods. In modern society with the unprecedented development of technology and information, people’s life rhythm has accelerated, and the opposite “slow fashion” has become popular. More and more people are focusing more on the traditional craft of tie-dyeing. In contemporary fiber art, raw materials have become the soul and foundation of fiber art. This is also the difference between modern fiber art and traditional textile art. Entering the new era, the demand for textiles by people of all countries is also increasing, new functional requirements are put forward for textiles, and functional textiles emerge as the times require. The creative display of nanofibers is a comprehensive grasp of the properties of the fibrous material. It is the creativity and expression generated under the premise of understanding the type, shape, craft, and expression of fiber. It fully reflects the characteristics of the material itself, and it is also the designer’s ideological expression of the texture and shape of the material. It is then materialized into a certain connotation by appropriate technical means. In this paper, manual tie-dyeing is applied to nanofiber materials, making full use of the advantages of modern nanomaterials to promote the development of fabric tie-dyeing technology. In the performance test of the transmittance of nanomaterials to ultraviolet rays, it can be found that the transmittance of nanomaterials through the tie-dyeing process is lower for optical fibers with shorter wavelengths. When the wavelength of ultraviolet light is 313 nm, the transmittance of ZnO to ultraviolet light is 0. When the ultraviolet wavelength is 435 nm, the transmittance of ZnO to ultraviolet light is 45%.

A noticeable improvement in opto-electronic properties of nebulizer sprayed In2S3 thin films for stable-photodetector applications

In the present work, the versatile Indium sulfide thin film (In2S3) are deposited on glass substrates by using nebulizer assisted spray pyrolysis technique at 350 °C for ultra violet (UV) light detection application. The effect of the of indium and sulfur molar concentrations on the structure, morphology, optical characteristics, and photo-sensing capability of the prepared In2S3 films were systematically examined in the range of 0.01 M–0.03 M. The structural analysis of the 0.03 M sample showed a maximum crystallite size of 36 nm. The morphological image from the scanning electron microscope showed a homogeneous, large size grained surface of In2S3 completely covering the substrate. As the molar concentration was raised from 0.01 to 0.03 M, the indium to the sulfur ratio in the prepared films ranged from 1.02 to 1.16. All the prepared films showed good absorption in the ultraviolet region of the electromagnetic spectrum. The sample prepared at 0.03 M was found to have a minimum band gap of 2.38 eV and a maximum PL intensity at 680 nm. The I–V characteristics show a photocurrent of 1.4 × 10−5 A under UV light of wavelength 365 nm for an external bias voltage of ±5 V. A maximum responsivity of 2.74 A/W, detectivity of 2.65 × 1010 Jones was exhibited by 0.03 M sample with a high EQE of 63.9%. The prepared In2S3 thin film can be used as active material in photodetectors.

Which UV wavelength is the most effective for chlorine-resistant bacteria in terms of the impact of activity, cell membrane and DNA?

The widespread use of chlorine disinfectants in drinking water has accelerated the selection of chlorine-resistant bacteria (CRB). The presence of CRB in drinking water (during treatment, distribution, and consumption) has a profound impact on public safety. Ultraviolet (UV) irradiation is an effective control technology for CRB. Nevertheless, the relative efficacies of different UV light wavelengths (traditional mercury lamps, ultraviolet light-emitting diodes (UV-LED 265 nm and 285 nm), and 222 nm krypton-chlorine excilamps) in the control and inactivation of various CRB have not been investigated. In this study, the impacts of different UV light sources on the inactivation rate and microbial cell structure of CRB were evaluated. The results showed that the order of inactivation efficacy was as follows: UV-LED 265 nm > low-pressure ultraviolet (LPUV) ≈ medium-pressure ultraviolet (MPUV) ≈ 222 nm > UV-LED 285 nm. CRB was inactivated via DNA damage and additional ATP decline under UV-LED 265 nm, UV-LED 285 nm and LPUV irradiation, of which UV-LED 265 nm was the most effective based on fluence and inactivation rate constants. The inactivation mechanisms revealed that the 222 nm wavelength was significantly different from other wavelengths; it stimulated the production of a large number of reactive oxygen species (ROS) which resulted in bacterial cell membrane damage, ATP direct decline, and a small number of DNA lesions. Multispectral MPUV induced both of the foregoing mechanisms but mainly damaged DNA. The present study provides empirical evidence for the reasonable application of UV disinfection technology in the treatment of water and wastewater and their conduits and delivery systems.

Evaluation of efficacy of antioxidant-enriched sunscreen prodcuts against long wavelength ultraviolet A1 and visible light.

The synergistic effects of VL and long wavelength UVA1 (VL + UVA1, 370-700 nm) on inducing pigmentation and erythema in skin have been demonstrated and linked to exacerbation of dermatologic conditions including melasma and post-inflammatory hyperpigmentation. This study aimed to compare the photoprotection of organic sunscreens enriched with antioxidant (AO) combinations against VL + UVA1 induced biologic effects. The efficacy was compared with that offered by a commercially available tinted sunscreen. Ten healthy adult subjects with Fitzpatrick skin phototypes IV-VI were enrolled (nine completed). VL + UVA1 dose of 380 J/cm2 was utilized. Assessment methods were polarized photography, investigator global scoring and diffuse reflectance spectroscopy (DRS). Measurements were obtained at baseline and immediately, 24h and 7 days after irradiation. Sites treated with tinted sunscreen product had significantly less pigmentation compared with untreated but irradiated skin at all time points. However, DRS results demonstrated that the 5-AO sunscreen performed comparably or better than all sunscreens tested with relatively lower dyschromia, delayed erythema and pigmentation. These results highlight the potential of AO-enriched sunscreens to be photoprotective against VL + UVA1. The combination of efficacy and the cosmetic appearance of this product may provide wider acceptability which is crucial considering the limited available means of protection against this waveband.

Nano-photocatalytic Mineralization and Degradation of Dye Acid Orange 7 on Titanium Dioxide Coated Layers in a Batch Mode Plate Photo Reactor: Role of Flow Rate and Inorganic Salts

Recently, the environmental impact of discharged untreated dye wastewater has received extensive attention. Herein, the paper investigated the photocatalytic degradation of dye Acid Orange 7 in a batch mode photoreactor fitted with a TiO2 coated layer of dimensions (10cmí—15cm). The coated layer was prepared by sedimentation from an aqueous suspension of c=5 g.L-1 and annealed at 300°C. Polychromatic sun beds lamps were used as a source of Ultra Violet (UV) light with maximum intensity at λ= 365 nm. A UV-Vis spectrophotometer monitored changes in dye concentrations at = 485 nm. Photocatalytic degradation of dye Acid Orange 7; c= (2.5í—10-5 mol. L-1) was determined by changes in dye concentration under UV light irradiation. The results show that dyes can be effectively degraded by TiO2photocatalyst and UV light of wavelength 300-400 nm. The effect of flow rate and inorganic salts (sodium carbonate, sodium sulfate) on dye Acid Orange 7 degradation was examined. The maximum absorption wavelength and maximum coefficient of molar absorptivity ) was determined at 485 nm and 20647 dm3.mol-1.cm-1. The presence of CO32- ions in the dye solution accelerated photocatalytic degradation by 35.8% and 39.3% after 30 minutes and 60 minutes of photocatalytic degradation. Dye photodegradation was reduced by 76.4% after 2.5 hours of photocatalytic treatment with SO42- ions dissolved in dye solution. Presence of SO42-ions showed no effect. Additionally, a flow rate of 50 lit/hr. was effective by 85.1% compared to 100 lit/hr. after 4 hours of photocatalytic degradation.

Optimal path selection algorithm for UAV formation guided by a UV virtual fence.

This paper studies the optimal flight path selection problem of unmanned aerial vehicle (UAV) formations in multi-obstacle areas. According to the characteristics of wireless ultraviolet (UV) light communication conforming to the probability coverage model, a wireless UV light self-organizing network coverage model is proposed; the UV light of different wavelengths is divided into a detection area, communication area, and early warning area. A consensus algorithm with leaders and followers is designed, and an artificial potential field method is introduced to ensure that the UAV formation successfully avoids obstacles. Simulation results show that the UAV formation can choose a reasonable flight route under the improved algorithm, and the average obstacle avoidance time is reduced by 6.75 s compared with the original algorithm. Comparing the flight paths of formations in barrier-free and multi-obstacle environments, the obstacle avoidance range of UAVs is not more than 1 m. The UV light self-organizing coverage model can be applied to military communications and disaster relief.

Facile, Real‐Time Identification of Blood Components with Self‐Powered Organic–Inorganic Heterostructure Photodetectors

AbstractA rapid and efficient opto‐electrical method for the determination of blood components is demonstrated through a tin oxide (SnO2) quantum dot (QD) fluorene copolymer heterojunction photodetector (FP‐PD). The photo‐active materials, the device structure, and the sensing system are carefully designed to provide miniaturization at a low cost. SnO2 QDs are synthesized with a one‐step solvothermal reaction and a photodetector, and then fabricated in a simple sequential spin‐coating process. Under optimal conditions, the SnO2 QD/FP‐PD shows remarkable responsivity, detectability, fast responses, and stability under self‐powered operation. In this research, optical characteristics of blood components, and interactions between the photodetector and blood components from illuminating two different wavelengths of ultraviolet light, are systemically investigated. Furthermore, three different blood component mixtures are successfully determined by the SnO2 QD/FP‐PD based on specific absorption phenomena, which provides a simple and efficient technique for emergency medical care and health monitoring systems.

One-step synthesis of nitrogen-doped carbon quantum dots for paper-based electrochemiluminescence detection of Cu2+ ions

A one-step hydrothermal method using glucosamine as the carbon and nitrogen source, mixed with dipotassium hydrogen phosphate (K2HPO4) in an aqueous solution, is used to prepare nitrogen-doped carbon quantum dots (N-CQDs). Compared with carbon quantum dots (CQDs) synthesized using glucose in a similar manner, N-CQDs show a much clearer green fluorescence at the long wavelength of ultraviolet light (365 nm) and a more stable and improved electrochemiluminescence (ECL) activity. A paper-based ECL sensor is developed with N-CQDs, based on the easy-scalable screen printing technology, and K2S2O8 is used as a co-reactant to detect Cu2+ ions. The ECL strength of the N-CQDs-K2S2O8 system increases with increasing Cu2+ ions concentration. The sensor shows overall excellent ECL stability, reproducibility, and selectivity, with a wide linear relationship ranging from 0.01 to 1000 μM in the detection of Cu2+ ions. This one-step synthesis of N-CQDs provides a feasible method for preparing portable paper-based ECL sensors for future applications.

UV Light Detection Using Resonance Frequency of Piezoelectric Quartz Crystal

This article reported about the ultraviolet (UV) radiation effect on the resonance frequency response of a AT-cut piezoelectric quartz crystal. A large resonance frequency upshift was observed when the quartz crystal was irradiated by UV light of 355-nm wavelength using a Q-switched pulsed Nd:YVO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> UV laser. The dynamic frequency response behavior was systematically investigated by illuminating the quartz crystal with UV light in which the UV intensity was varied with time in staircase- and linear pulse-shaped patterns. From the experimental analysis, we measured the limit of detection and the sensitivity of the quartz crystal, which are about 0.5 mW/cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> and 0.706 Hz/(mW/cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> ), respectively. For a constant UV irradiation, a moderate response (<;10 s) and recovery (<;10 s) times were achieved during the on and off cycles of the UV light. The short-term repeatability and maximum operating limit of AT-cut quartz crystal were also further studied upon exposure to UV light with different intensities. In this work, we not only demonstrate the impact of UV irradiation on quartz crystal but also discuss the mechanism of upshift in resonance frequency upon exposure to UV light. This study shows the applicability of quartz crystal for the detection of UV light.

Surface Coating- and Light-Controlled Oxygen Doping of Carbon Nanotubes

Tuning the optical properties of single-wall carbon nanotubes (SWCNTs) via oxygen doping has been a simple and effective approach to create fluorescent quantum emitters. We performed oxygen doping of SWCNTs in water utilizing chirality-pure (6,5) enantiomers with different surface coatings of DNA and surfactants by ultraviolet (UV) light irradiation. We found the reaction to be primarily dependent on the wavelength of UV light and the specific coating material on the nanotube surface. Particularly, DNA coatings react more readily with the reactive oxygen species that is photochemically produced under short-wavelength UV light than SWCNTs, preventing oxygen doping of nanotubes from occurring. The surface coverage of SWCNTs created by coating materials plays a weaker role in controlling the reaction efficiency of oxygen doping. This is demonstrated clearly by the lack of oxygen doping for two (6,5) enantiomers wrapped by DNA with drastically different surface coverages. These findings reveal important mechanisms of oxygen doping of SWCNTs, providing methods of controlling optical properties of nanotubes for developing unique applications.

In-vitro molecular interaction of boron doped carbon dots with human serum albumin

Carbon dots have drawn prodigious attention in biomedical and biological fields by virtue of its unique optical properties, but their effect on structure and behaviour of essential proteins have rarely been explored. In this study boron doped carbon dots (BCDs) which was synthesized by microwave treatment of citric acid, boric acid and urea, with maximum emission wavelength of 444 nm when excited upon long wavelength ultra-violet light. Synthesized BCDs were characterized by UV-Visible, FTIR, HRTEM and Fluorescence spectroscopy. Interaction between BCDs and human serum albumin (HSA) is carried out in physiological conditions. Stoichiometry of BCDs-HSA was found to be 1:1 and various thermodynamic parameters have also been calculated. The negative value of ΔG suggested that interaction between HSA and BCDs was spontaneous in nature.

Engineering highly transparent UV-shielding films with disassembled polydopamine oligomers as light adsorber

In this study, a highly transparent ultraviolet (UV)-shielding film was prepared by developing disassembled polydopamine (dPDA) oligomers as active UV light absorbers, followed by the incorporation into the matrix of polyvinyl alcohol (PVA) via a solvent casting method. It was shown the composite film with only 0.5 wt% of dPDA addition could barrier 99.3% of UV light (wavelength of 200–400 nm), without compromising the film transparency. Such excellent UV-shielding ability was attributed to the limited inter- and intra-molecular conjugations in dPDA oligomers which can be well dispersed in PVA matrix. Besides, the weakened molecular conjugations in dPDA led to obvious blue-shift of UV–vis absorbance, and thus strong absorbance in UV region but high transmittance in visible region. Moreover, the dPDA/PVA films exhibit higher photostability than PDA/PVA ones due to the absence of free radicals in dPDA, which was advantageous to avoid the photoaging in the long-term use under UV irradiation. This work proves the feasibility of dPDA oligomers as highly efficient light absorbers used for UV-shielding films and provides some new insights to overcome the trade-off effect between transparency and UV-shielding for preparing high-performance UV-shielding films.

Preliminary evidence of fluorescence in Mediterranean heterobranchs

ABSTRACTBiofluorescence, the ability to exploit light with short wavelengths, such as ultraviolet (UV) and blue, and re-emit it with lower energy and longer wavelengths, is considered a widespread phenomenon among marine animals and has many ecological roles in intra- and interspecific communication. Heterobranch sea slugs are believed to rely almost exclusively on their colour patterns for survival, with coloration serving as camouflage or as a warning to predators of heterobranch toxicity (aposematic coloration). Since solar light is progressively absorbed by seawater with a constant loss of longer wavelengths, it is unclear how heterobranch coloration can maintain its ecological role below the water surface. The present study investigates, for the first time, in situ biofluorescence in 53 species of Mediterranean Heterobranchia to determine whether these animals rely on light emission to enhance the visibility of their colour patterns. The ability to fluoresce when illuminated by UV and blue light (wavelengths &amp;lt;470 nm) appeared to be quite widespread among nudibranchs (i.e. found in c. one-third of the encountered species), while no evidence of light emission was found in non-nudibranch heterobranchs. The majority of fluorescent species were Cladobranchia belonging to the superfamilies Fionoidea and Aeolidioidea. Nudibranchs fluoresced in four different colours, with green being the most common. Light emission was often restricted to particular body regions, such as the cerata of Cladobranchia. These preliminary data might indicate that fluorescence plays an essential role in the enhancement of nudibranch aposematic coloration.

Facile synthesis of β–Ga2O3 nanowires network for solar-blind ultraviolet photodetector

Gallium oxide (Ga2O3) has become a viable candidate for certain types of high-power devices due to its large energy bandgap of 4.9 eV, which has attracted widespread attention. In particular, Ga2O3 nanowire structures have more unique properties due to its larger specific surface area for the high performance solar-blind ultraviolet (UV) photodetectors. In this work, the ultrafine Ga2O3 nanowire network structure is obtained on the sapphire substrate with an Au catalyst by chemical vapor deposition method at 960 °C for 10 min. We can confirm that the growth of the nanowire follows the vapor–liquid–solid growth mechanism and is a β-type Ga2O3 crystal through the performance test results. A solar-blind UV photodetector based on the nanowires network shows an apparent response to solar-blind UV light and almost no response to 365 nm wavelength. Furthermore, the on–off ratio, light responsivity, and response time are also measured under a 254 nm wavelength UV light irradiation, respectively. This work provides a new preparation method to improve the performance of solar-blind UV photodetector.

The Influence of UV Light on Rheological Properties of Collagen Extracted from Silver Carp Skin.

Acid soluble collagen (ASC) was extracted from Silver Carp fish skin. Collagen was dissolved in acetic acid at varying concentrations and its rheological properties were studied. Steady shear flow properties of collagen solutions at concentrations of 5 and 10 mg/mL were characterized using rheometry at 20 °C. Collagen solutions were irradiated with UV light (wavelength 254 nm) for up to 2 h and rheological properties were measured. All the collagen solutions showed a shear-thinning flow behavior. A constant viscosity region was observed after 1 h of UV irradiation, which showed that collagen molecules were fully denatured. A short treatment with collagen solution by UV (ultraviolet) light led to an increase in viscosity; however, the denaturation temperature of UV-irradiated collagen decreased. Depending on the time of UV treatment, collagen extracted from Silver Carp fish skin may undergo physical crosslinking or photodegradation. Physically crosslinked collagen may find applications in functional food, cosmetic, biomedical, and pharmaceutical industries.

Metastructure-inspired ultraviolet and blue light filter

Currently, many studies are being conducted to apply optical metamaterials to the transmittance control of visible light and near infrared wavelengths. In this study, a metastructure was fabricated with periodic metal holes that can reduce the transmittance of only ultraviolet (UV) and blue light in the wavelength band from UV to visible light. The connection structure of the metal-hole-patterns, with a hole size of tens to hundreds of μm, and the crystallinity of the metal could be controlled through the three-step process of polystyrene (PS) nanosphere array formation, using the air–water interface method, and size adjustment of the PS nanosphere, through the etching process, and through the adjustment of the metal film thickness. The glass substrate, with an Al-hole-patterned metastructure (an Al-hole-pattern size of ∼245 nm and an Al thickness of ∼60 nm), showed a low transmittance of 33% and 28% in the wavelength bands of 350 nm and 470 nm, respectively, and a high transmittance of 67% and 57% in the ranges of 540 nm and 670 nm, respectively, owing to the metacharacteristics manifested in periodically connected metal patterning structures. This Al-hole-patterned metastructure is expected to be applicable to various optical devices that require a reduction in the transmittance of only the UV and blue light wavelength band.

Characteristics of water leaving reflectance at ultraviolet wavelengths: radiative transfer simulations.

Ultraviolet (UV) bands have attracted considerable attention in regard to satellite ocean color remote sensing due to their potential application in atmospheric correction, oil spill detection, and water organic matter retrieval. However, the characteristics of the water spectrum in the UV bands are still poorly understood. In this study, by extending the bio-optical model from traditional visible light wavelengths to UV light wavelengths, the water spectrum in UV bands under different water types was simulated by using the HydroLight water radiative transfer model, and influences of ocean color components on the water spectrum in UV bands were investigated. Results showed that remote sensing reflectance (Rrs) in the UV bands decreased rapidly with the increase in chlorophyll concentration (Chl) and colored dissolved organic matter (CDOM). In clean waters, Rrs in the UV bands was relatively large and sensitive to changes in Chl and CDOM, which could be of benefit for satellite retrieval of water organic matter. In eutrophic water, Rrs in the UV bands was quite low, and thence the UV bands could be used as a reference band for atmospheric correction. Compared to the monotonic decreasing effects of Chl and CDOM, concentration of non-algal particles (NAP) had a complex effect on Rrs in the UV bands, i.e., increase and decrease in Rrs in low-moderately and highly turbid waters, respectively. Thus, the traditional model for the relationship between Rrs and inherent optical properties (IOPs) could be applied to the UV bands in clean waters; in highly turbid waters, however, its deviation increases and empirical coefficients in the model should be improved.

Preparation of Pentacyclo‐[8.2.1.14,702,903,8] ‐tetradecane‐5,6,11,12‐tetracarboxylic Dianhydride Combined with Gaussian Calculation

AbstractThe pentacyclic‐[8.2.1.14,702,903,8]‐tetradecane‐5,6,11,12‐tetracarboxylic dianhydride was prepared by norbornene dianhydrides as raw material and acetone as a solvent in a self‐made vertical photo reactor with single wavelength ultraviolet light. Based on the Gaussian Calculation combine with experiments, we studied the optimum wavelength of ultraviolet light and the stable conformation of the target product. The structure of the target compound was determined by HPLC‐MS, 1H NMR, 13C NMR, and X‐ray diffraction. The results showed that the yield of pentacyclic‐[8.2.1.14,702,903,8]‐tetradecane‐5,6,11,12‐tetracarboxylic dianhydride could reach 50.5 %, the reaction temperature was 20 °C, the initial concentration of reactant was 0.15 g/mL, the flow rate of the substrate was 5 mL/min, and the reaction time was 4 h.

Effect of temperature and ultraviolet light on the bacterial kill effectiveness of antibiotic-infused 3D printed implants.

Drug eluting 3D printed polymeric implants have great potential in orthopaedic applications since they are relatively inexpensive and can be designed to be patient specific thereby providing quality care. Fused Deposition Modeling (FDM) and Stereolithography (SLA) are among the most popular techniques available to print such polymeric implants. These techniques facilitate introducing antibiotics into the material at microscales during the manufacturing stage and subsequently, the printed implants can be engineered to release drugs in a controlled manner. However, FDM uses high temperature to melt the filament as it passes through the nozzle and SLA relies on exposure to nanoscale wavelength ultraviolet (UV) light which can adversely affect the anti-bacterial effectiveness of the antibiotics. The focus of this article is two-fold: i) Examine the effect of high temperature on the bacterial kill-effectiveness of eluted antibiotics through Polycaprolactone (PCL) based femoral implants and ii) Examine the effect of exposure to ultraviolet (UV) light on the bacterial kill-effectiveness of eluted antibiotics through femoral implants made up of a composite resin with various weight fractions of Polyethylene Glycol (PEG) and Polyethylene Glycol Diacrylate (PEGDA). Results indicate that even after exposing doxycycline, vancomycin and cefazolin at different temperatures between 20oC and 230oC, the antibiotics did not lose their effectiveness (kill radius of at least 0.85 cm). For doxycycline infused implants exposed to UV light, it was seen that a resin with 20 % PEGDA and 80 % PEG had the highest efficacy (1.8 cm of kill radius) and the lowest efficacy was found in an implant with 100 % PEGDA (1.2 cm of kill radius).

Bidirectional All‐Optical Synapses Based on a 2D Bi2O2Se/Graphene Hybrid Structure for Multifunctional Optoelectronics

AbstractNeuromorphic computing has been extensively studied to mimic the brain functions of perception, learning, and memory because it may overcome the von Neumann bottleneck. Here, with the light‐induced bidirectional photoresponse of the proposed Bi2O2Se/graphene hybrid structure, its potential use in next‐generation neuromorphic hardware is examined with three distinct optoelectronic applications. First, a photodetector based on a Bi2O2Se/graphene hybrid structure presents positive and negative photoresponsibility of 88 and −110 A W−1 achieved by the excitation of visible wavelength and ultraviolet wavelength light at intensities of 1.2 and 0.3 mW cm−2, respectively. Second, this unique photoresponse contributes to the realization of all optically stimulated long‐term potentiation or long‐term depression to mimic synaptic short‐term plasticity and long‐term plasticity, which are attributed to the combined effect of photoconductivity, bolometric, and photoinduced desorption. Third, the devices are applied to perform digital logic functions, such as “AND” and “OR,” using full light modulation. The proposed Bi2O2Se/graphene‐based optoelectronic device represents an innovative and efficient building block for the development of future multifunctional artificial neuromorphic systems.