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Laser evaporation technique

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@article{osti_6847148, title = {Pulsed-laser evaporation technique for deposition of thin films: Physics and theoretical model}, author = {Singh, R K and Narayan, J}, abstractNote = {We have studied in detail the physical phenomena involved in the interaction of high-powered nanosecond excimer-laser pulses with bulk targets resulting in evaporation, plasma formation, and subsequent deposition. Matrix assisted pulsed laser evaporation (MAPLE) is a new deposition technique which is developed from pulsed laser deposition (PLD). MAPLE provides a gentle process for fabricating a uniform film of small or large molecular weight species such as inorganic and polymers, from the condensed phase into the vapor phase Based on the nature of interaction of the laser beam with the target and the evaporated material, the pulsed-laser evaporation (PLE) process can be classified into three separate regimes: (i) interaction of the laser beam with the bulk target, (ii) plasma formation, heating, and initial three-dimensional isothermal expansion, and (iii) adiabatic expansion and deposition of thin films

Pulsed-laser evaporation technique for deposition of thin

  1. Recently, a new technique for depositing polymeric and organic thin films named matrix-assisted pulsed laser evaporation (MAPLE ) has been developed w14 x. MAPLE deviates from PLD in the way the target is prepared and in the laser energy regime under which the laser-material interactions at the target take place
  2. In this method, the high-power pulsed laser beam focuses on the target that is inside the vacuum chamber. The target material is vaporized by a laser beam in the form of a Plasma Plume and deposit on the substrate as a thin film. This process can be performed in a high vacuum environment or in an environment with background gases such as oxygen
  3. Pulsed laser deposition (PLD) is a physical vapor deposition (PVD) technique where a high-power pulsed laser beam is focused inside a vacuum chamber to strike a target of the material that is to be deposited
  4. Laser ablation or photoablation is the process of removing material from a solid (or occasionally liquid) surface by irradiating it with a laser beam. At low laser flux, the material is heated by the absorbed laser energy and evaporates or sublimates. At high laser flux, the material is typically converted to a plasma
  5. PLD is a thin-film deposition technique using high-energy laser pulses to vaporize the surface of a solid target inside a vacuum chamber and condensing the vapor on a substrate to form a thin film up to a few micrometers in thickness. Figure 2 shows a schematic diagram of a typical PLD process. Sign in to download full-size image Figure 2
  6. We have studied in detail the physical phenomena involved in the interaction of high-powered nanosecond excimer-laser pulses with bulk targets resulting in evaporation, plasma formation, and subsequent deposition of thin films. A theoretical model for simulating these laser-plasma\char21{}solid interactions has been developed. In this model, the laser-generated plasma is treated as an ideal.

Laser beam evaporation (pulsed-laser deposition) Pulsed-laser deposition (PLD) is another physical deposition technique to deposit the thin-film-coating system [ 16 ]. During the thin-film deposition process, the laser beam is used to ablate the material for depositing the thin films inside a vacuum chamber as shown in Figure 3 advantages of pulsed laser ablation are flexibility, fast response, energetic evaporate and congruent evaporation 4. Pulsed laser deposition as a film growth technique has attained its reputed fame and has attracted wide spread interest after it has been used successfully to grow high-temperature Tc superconducting films in 1987

  1. Theoretical model for deposition of superconducting thin films using pulsed laser evaporation technique
  2. Numerous evaporation techniques have been used, including thermal, plasma, sputtering, electric discharge, and laser processing. Evaporation techniques provide many incentives for large-scale synthesis of NPs. They provide high-purity, crystalline NPs with relatively cleaner surfaces
  3. Versatile Pulsed Laser Deposition and Thermal Evaporator system, PLD-T, is a high vacuum thin film deposition system enables to deposit different materials by both Pulsed Laser Deposition and so Thermal Evaporation technique. It can deposit complex materials and crystalline structures onto substrates with very little setup involved

The physical process of the laser ablation technique for deposition of thin films can be classified into three separate interaction regimes: (i) interaction of the laser beam with the bulk target, (ii) plasma formation and initial isothermal expansion, and (iii) adiabatic expansion leading to deposition of thin films. The first two regimes occur during the time interval of the laser pulse. A laser is used to melt away (vaporize) excess prostate tissue and enlarge the urinary channel. Holmium laser ablation of the prostate (HoLAP). This procedure is similar to PVP but uses a different type of laser. Holmium laser enucleation of the prostate (HoLEP) Oxidation states and magnetism of Fe nanoparticles prepared by a laser evaporation technique B. J. Jo ¨nsson, T. Turkki, V. Strom, M. S. El-Shall,a) and K. V. Rao Royal Institute of Technology, Department of Condensed Matter Physics, 100 44 Stockholm, Swede

The term laser ablation is used to emphasize the nonequilibrium vapor/plasma conditions created at the surface by intense laser pulse, to distinguish from laser evaporation, which is heating and evaporation of material in condition of thermodynamic equilibrium Incorporation of a thin insulating layer of polymer-like polyimide deposited by pulsed laser evaporation technique between metal and n-GaAs has resulted in diode structures with MIS and Schottky-barrier-type capacitance-voltage and current-voltage characteristics. These structures have the potential to be useful in improving the performance of GaAs FETs for microwave and high-speed applications Resonant Infrared Matrix-Assisted Pulsed Laser Evaporation (RIR-MAPLE) technique involves freezing a solution containing the molecular building blocks for the perovskite, and then blasting the frozen block with a laser in a vacuum chambe Matrix-Assisted Pulsed Laser Evaporation (MAPLE) is a deposition technique, developed from Pulsed Laser Deposition (PLD) especially well suited for producing organic/polymeric thin films, which can take advantage from using Nd:YAG laser. Depending on the relative values of light absorption coefficients of the solvent and of the molecules to be deposited, laser energy is directly absorbed by. The technique is called Resonant Infrared Matrix-Assisted Pulsed Laser Evaporation, or RIR-MAPLE for short, and was developed by Stiff-Roberts at Duke over the past decade. Adapted from a technology invented in 1999 called MAPLE, the technique involves freezing a solution containing the molecular building blocks for the perovskite, and then.

Laser evaporation technology to create new solar materials 3 January 2018 Inside look at the RIR-MAPLE technique that has the ability to build new solar cell crystal technology Matrix-assisted pulsed laser evaporation is a gentle technique for the thin-film deposition of organic and hybrid materials, said Adrienne Stiff-Roberts, associate professor of electrical and computer engineering at Duke.By using a low-energy, infrared laser to evaporate a solvent matrix only, the absorption of laser energy is completely decoupled from the target material dissolved.

Matrix-Assisted Pulsed Laser Evaporation (MAPLE) technique

We conclude that thermal laser evaporation is a powerful technique to grow any solid, nonradioactive elements as thin films. We have confirmed this experimentally for 43 elements by using the same laser beam geometry. Due to the localized heating induced by the incident source laser, most of these elements could be deposited using free-standing. The technique was invented in Naval Research Laboratory, Washington D.C. Refs. [1, 2] describe it as matrix-assisted pulsed laser evaporation (MAPLE) and is extensively applied since 2000 for the ablation and deposition of a large class of compounds with application in many top field domains, like nanobiomedicine, photocatalysis, synthesis of. The technique is called Resonant Infrared Matrix-Assisted Pulsed Laser Evaporation, or RIR-MAPLE for short, and was developed by Stiff-Roberts at Duke over the past decade. advertisemen

The technique is called Resonant Infrared Matrix-Assisted Pulsed Laser Evaporation, or RIR-MAPLE for short, and was developed by Stiff-Roberts at Duke over the past decade. Adjusted from an innovation concocted in 1999 called MAPLE, the method includes solidifying an answer containing the atomic building hinders for the perovskite, and after. We describe here the deposition of superconducting thin films by the laser evaporation technique. The characterization of this process, and optimization with respect to wavelength and pulse duration of the laser will be discussed. Results of laser interaction experiments will also be described. It was shown that the superconducting thin films could be used as room temperature bolometers with a.

pulsed laser evaporation (MAPLE), this technique has been called MAPLE-DW in the literature.13,14 However, this term is sometimes used in the literature to loosely refer to LDW of any multicom-ponent system, regardless of the transfer mechanism. One of the important advantages of MAPLE-DW over traditional LIFT is tha In this work, we used a laser deposition technique to grow thin films of shellac for targeted drug release. The employed laser technique was Matrix-Assisted Pulsed Laser Evaporation (MAPLE), a variation of the pulsed laser deposition (PLD) procedure. Pulsed laser deposition is especiall We describe here the deposition of superconducting and semiconducting thin films by the laser evaporation technique. The, characterization of this process, and possible optimization with regards to wavelength and pulse duration of the laser will be discussed. Results of laser interaction experiments will also be described Applications of the matrix-assisted pulsed laser evaporation method for the deposition of organic, biological 567 target holder, since it has to be kept at very low temperature during depositions Objective: This study evaluated the influence of Nd:YAG laser on the evaporation degree (ED) of the solvent components in total-etch and self-etch adhesives. Materials and methods: The ED of Gluma Comfort Bond (Heraeus-Kulzer) one-step self-etch adhesive, and Adper Single Bond 2 (3M ESPE), and XP Bond (Dentsply) total-etch adhesives was determined by weight alterations using two techniques.

Laser evaporation technology to create new solar material

Matrix assisted pulsed-laser evaporation technique for coating a medical device and associated system and medical device The vapor cone originates at a target point that a laser beam or a laser pulse contacts a frozen target in the target assembly. A medical device is provided having a coating applied by a method Gas sensing properties of nanocrystalline metal oxide powders produced by a laser evaporation technique . Geraint Williams and Gary S. V. Coles Abstract. Nanosized powders of Al 2 O 3, ZrO 2 and SnO 2 have been produced by laser ablation of ceramic samples followed by condensation in a controlled gaseous atmosphere. X-Ray powder diffraction. Laser ablation is a technique of removing of material from superficial solid with the help of laser beam. The number of studies grows simultaneously in seventies and they got a great success but it was explored in the year 1985 with many applications for example laser medication, laser with mass spectrometry, laser with optical emission. The most important laser techniques in surface engineering can be divided into the four main types of laser treatment: remelting-free techniques, remelting techniques, evaporation techniques and the special techniques for the formation of thin and hard coatings. Laser remelting-free techniques are represented, e.g., by surface annealing. Matrix-assisted pulsed laser evaporation (MAPLE) is a laser-based deposition technique which allows the immobilization of micro-, nano-scale materials on any type of solid substrate surface. The general methodology firstly consists on the dilution of the material of interest (solute) in a solvent which is usually laser-absorbing. Afterwards, th

There, thermal evaporation techniques have become the norm, including thermal electrosurgery and laser surgery 8,9. These have mostly been used to determine the position of the borders between. Gas sensing properties of nanocrystalline metal oxide powders produced by a laser evaporation technique (Note: The full text of this document is currently only available in the PDF Version). Geraint Williams and Gary S. V. Cole We describe here the deposition of superconducting thin films by the laser evaporation technique. The characterization of this process, and optimization with respect to wavelength and pulse duration of the laser will be discussed. Results of laser interaction experiments will also be described The ATC-HY Multi-Chamber Hybrid Deposition Tool combines two Hybrid Process Chambers, each featuring e-beam and thermal evaporation, confocal magnetron sputtering, ion beam etching with a 360 degree tilt, and a water-cooled substrate holder. In addition, a third process chamber features post anneal, oxygenation and ashing capability

A laser evaporation pre-run is conducted and the ratio of counts in the background-corrected peaks m/n = 1 and 2 Da, that is, the ratio ${\rm H}^ + {/}{\rm H}_2^ +$, is measured. the cycled evaporation rate technique may enable depth profiling and eventually fully 3D spatial imaging of hydrogen concentrations in APT samples. To explore this. Laser ablation (LA) and spark discharge (SD) techniques are commonly used for nanoparticle (NP) formation. The produced NPs have found numerous applications in such areas as electronics, biomedicine, textile production, etc. Previous studies provide us information about the amount of NPs, their size distribution, and possible applications. On one hand, the main advantage of the LA method is in. of the laser pulsesHowever, the solvent and the organic compound are mixed and frozen before the MAPLE technique application, and the laser beams energy is much lower than that used in PLD method [6-8]. Figure 1 MAPLE technique during the deposition process, but an evaporation followed by a condensation on the substrate. A

Pulsed Laser Deposition (PLD) is a physical deposition

Pulsed laser deposition - Wikipedi

A MATRIX ASSISTED PULSED-LASER EVAPORATION TECHNIQUE FOR COATING A MEDICAL DEVICE AND ASSOCIATED SYSTEM AND MEDICAL DEVICE (PAT - EP1725290) MALONE Anthony. Boston Scientific Limited. Patent: Publ. of Application with search report - European Patent Office. Their technique even makes it possible to change, erase, or rewrite the colors several times. Increasing the laser heating range enough to create the evaporation process makes our color. Purpose: We evaluated the safety, efficacy, failure and complications of 2 techniques of laser prostatectomy for benign prostatic hyperplasia (BPH): transurethral evaporation of the prostate (evaporation) versus visual laser ablation of the prostate (coagulation) in a randomized trial Field evaporation is a thermally activated process, and in pulsed laser APT the field evaporation is triggered by the transient, spatially and temporally confined increase in temperature induced by absorption of the laser light close to the specimen apex [11]

Laser ablation - Wikipedi

temperature substrates by pulsed laser evaporation of liquid Ge sources. The body of this report deals with the results obtained in the final phase of the program and overall assessment of this technique, its advantageous features and drawback evaporation technique Y.G. laser, Spitfire Pro amplifier and TOPAS-C OPA system, to squeezing provide 100fs laser pulses with wavelength from 300nm to 2000 squeeze nm at 1kHz repetition rate. In our experiment, the pump beam tube Evaporation technique Tantalum oxides are commonly evaporated by reactive e-beam evaporation from a Cu-crucible or with Mo-liner. For the intended variation of refractive index and film stress, substrate temperature, oxygen pressure or flow, deposition rate and the parameters of ion assistance can be employed. To obtain low-absorbing Ta 2 Matrix Assisted Pulsed Laser Evaporation of Biocompatible Thin Layers Introduction: Matrix Assisted Pulsed Laser Evaporation (MAPLE) technique is used for the deposition of high quality biocompatible polymer thin films (Fig.1,2) Figure 1. MAPLE technique Figure 2. Multi stage PTR E. Lacatus1*, M.A. Sopronyi2, G.C. Alecu3, A. Tudor Pulsed laser deposition (PLD) is a flexible physical deposition technique that uses laser pulses to produce a plasma that is then deposited in on the substrate. This method can be used in environments ranging from high vacuum to atmospheric pressures, is compatible with the use of reactive gases, and can be used with almost any material

Laser Engraving / Evaporation. Engraving creates high heat when marking, which causes the material to vaporize. Since surface material is removed, there is very little damage to the material itself (compared to laser etching), but this method may not be appropriate for marking safety critical parts. The resulting mark is the same as chemical. were prepared by thermal evaporation technique under a vacuum of 10 −4 Pa then exposed to laser irradiation from diode laser HPL532-Q10W. The effects of laser-irradiation on the optical parameters were investigated. The optical parameters were acquire Status of pulsed laser deposition: challenges and opportunities Pulsed laser deposition (PLD) is a relatively new and unique method for producing multicomponent thin Þlms. PLD Þlms are used in diverse areas such as microelectronics, electro-optics, tribology and biomaterials. The success of this technique is due to its simplicity and the ease.

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Evaporation Evaporation and Sputtering (Metalization) For all devices, there is a need to go from semiconductor to metal. Thus we need a means to deposit metals. Many of these techniques used for metal deposition can be used to deposit other materials as well. Several methods are currently used for deposition of metal layers RESEARCH GROUPS Laser Group About Materials processing technologies which imply the presence of laser radiation are versatile, rapid, allow high spatial resolution, and ensure reproducibility. Laser-matter interactions involve the development of a huge number of complex physical and chemical mechanisms, leading to materials transformations which cannot be obtained by conventional techniques. The technique is called Resonant Infrared Matrix-Assisted Pulsed Laser Evaporation, or RIR-MAPLE for short, and was developed by Stiff-Roberts at Duke over the past decade. Adapted from a technology invented in 1999 called MAPLE, the technique involves freezing a solution containing the molecular building blocks for the perovskite, and then.

The technique is called Resonant Infrared Matrix-Assisted Pulsed Laser Evaporation, or RIR-MAPLE for short, and was developed by Stiff-Roberts at Duke over the last 10 years. Adapted from a technology invented in 1999 called MAPLE, the technique involves freezing a solution containing the molecular building blocks for the perovskite and. magnetron sputtering [15] and pulsed laser deposition (PLD) [16-18]. The PLD technique involves the use of high-power, short-pulse lasers to ablate the target material, producing a vapor plume which condenses onto a sub-strate, forming a film. In comparison, thermal evaporation (TE) is a more commonly employed technique, an In this dissertation, the deposition of MHP thin films using Resonant Infrared, Matrix-Assisted Pulsed Laser Evaporation (RIR-MAPLE) is developed as an alternative to current MHP thin film deposition techniques A MATRIX ASSISTED PULSED-LASER EVAPORATION TECHNIQUE FOR COATING A MEDICAL DEVICE AND ASSOCIATED SYSTEM AND MEDICAL DEVICE (PAT - WO2005092420) MALONE Anthony SCIMED LIFE SYSTEMS, INC. Patent: Publ.of the Int.Appl. with Int.search report - World Intellectual Property.

PPT - Synthesis and Applications of Semiconductor

Pulsed Laser Deposition - an overview ScienceDirect Topic

Laser-assisted evaporation of materials has several unique features and is being used increasingly as a thin-film deposition process. Characteristics of this technique and design parameters of a laser-assisted evaporation system are discussed. Types of source material, scanning and focusing of the laser beam, optical elements to deliver laser power to the sources, and emplacement of these. (a) The evaporation chamber before an experiment. Under operating conditions the laser beam (indicated by a white line) is focused onto the movable target rod in the centre of the chamber. This undergoes heating during the evaporation process. Inside the quartz tube placed above the target rod the soot produced can be collected A butterfly wing is replicated using a conformal-evaporated-film-by-rotation technique. The replicated scales are typically 200 µm long and 50 µm wide. The magnified image shows raised longitudinal ridges spaced approximately 2.5 µm apart, with a submicron net-like lattice between the scales

A team of researchers has now demonstrated a new technique for creating a mechanical force using a laser, through the evaporation of superfluid helium. The force is 10 times greater than other methods can achieve in the cryogenic regime and could be used to cool tiny mechanical oscillators that act as detectors of minute forces or as. Field emission properties of nonhydrogenated diamondlike carbon (DLC) films prepared by a novel laser evaporation technique have been investigated. A key feature of the novel technique is using a scanning pulsed laser beam that irradiates a graphite target with a focused beam and constant laser power density

The authors report success in treating a series of 58 patients utilizing the technique of carbon dioxide laser evaporation, with healing by secondary intention. Procedures were performed under local or general anesthesia. Results were determined retrospectively by patient interviews or exam after a mean of 25.7 months. In this study, 55 of the. GreenLight™ Laser PVP (Photoselective Vaporization of the Prostate) is a procedure used in the treatment of Benign Prostatic Hyperplasia (BPH), an enlargement of the prostate gland resulting in the urethral restriction.The prostate is a small gland circling the urethra immediately below the neck of the bladder

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Advance Deposition Techniques for Thin Film and Coating

Laser radiation was focused on the target with a lens, which also served as the entrance window of the evaporation chamber. The target was made from oxide micro-powder (or a mixture of them) by pressing and sintering it. As a result of the action of laser radiation, a laser plume consisting of target vapors appeared on the target near its surface A novel polymer processing technique, matrix assisted pulsed laser evaporation (MAPLE), for the deposition of organic and inorganic polymers and other materials, as ultrathin and uniform coatings has been developed OPTICAL FABRICATION: Advances in sputtering benefit coating costs. Apr 1st, 2009. Magnetron sputtering systems for production of high-precision optical coatings promise benefits in capability over traditional evaporation techniques, as well as potential cost savings compared to alternative sputter technologies

Pulsed Laser Deposition — Ablation Mechanism and Application

The work presented in this dissertation explores a novel thin film deposition technique, namely emulsion-based, resonant infrared, matrix-assisted pulsed laser evaporation (RIR-MAPLE), which combines characteristics of wet and dry deposition techniques for solution-processed materials In this post, we will take a deeper dive into the technical pros, cons and common uses of each type of PVD technique. Overview of Resistive Thermal Evaporation Resistive thermal evaporation applies thermal energy from a resistive heat source to a solid-state material in a vacuum chamber, which evaporates the source Two techniques for transferring biomaterials using a pulsed laser beam, matrix assisted pulsed laser evaporation (MAPLE) and MAPLE direct write (MDW), were developed. MAPLE is a large area vacuum based technique suitable for coatings and MDW is a localized deposition technique capable of fast prototyping of devices infrared, matrix-assisted pulsed laser evaporation (RIR-MAPLE), a versatile thin-film deposition technique that features aspects of both solution-based and vapor-phase deposition, enables a wide variety of hybrid perovskite thin films that can be difficult to achieve otherwise. This talk will review the development of RIR-MAPLE growth of hybri [en] This paper reports that laser ablation deposition (LAD) is a versatile thin film preparation technique which has been slowly developing for a number of years, and is currently receiving a lot of attention as demand increasingly exploits its advantages over other established techniques. Apart from its simplicity, one of its main advantages is the possibility of congruently evaporating any.

Theoretical model for deposition of superconducting thin

Specializing in laser technology research and development, laser equipment research and development, production, technical support, services and consulting.Products include CCD visual positioning marking system, CO2 laser marking, optical fiber marking, UV marking, laser welding machine, lighting industry, consumer electronics 3C industry dedicated laser equipment and automatic laser equipment Pure titanium dioxide (TiO2) and graphene oxide (GO) as well as TiO2/GO composite structures were grown by matrix-assisted pulsed laser evaporation (MAPLE) in a controlled oxygen atmosphere. The MAPLE target dispersions were prepared using distilled water as solvent matrix, with TiO2 nanoparticles (NPs) and GO platelets serving as host materials. Two laser sources, a free-running IR Er:YAG (λ. In this article we report on the production of nanosized zirconia particles by CO 2 laser evaporation. The radiation source was a transverse flow CO 2 laser operating in the continuous or the pulsed mode. Pulses between 1 and 500 μs duration could be generated by two different Q-switching techniques.The evaporation rates as well as the diameter of the particles and their density distributions.

Laser Ablation - an overview ScienceDirect Topic

Norm Hardy is a Process Engineer at Semicore Equipment Inc., a worldwide supplier of high performance thermal evaporation coating systems. Please allow our helpful support staff answer any questions you have regarding What is Thermal Evaporation? and the best methods and techniques for your specific Vacuum Thermal Evaporation Deposition Equipment needs by contacting us at sales@semicore. In this project, we implement a LASER-based technique to controllably generate bubbles on a heated surface. A numerical model is developed to capture this process of artificial nulceation and bubble growth. The objective is to enable a more focused study of bubble behavior in boiling for enhancing this phase change heat transfer process Over the past fifteen years, matrix-assisted pulsed laser evaporation (MAPLE) has been developed to deposit organic thin films, inorganic nanoparticles, and hybrid organic-inorganic nanocomposites. One variation of the MAPLE technique, resonant infrared matrix-assisted pulsed laser evaporation (RIR-MAPLE), reduces the laser energy (e.g., Er:YAG.

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RESULTS: Our main findings were that patients undergoing laser prostatectomy using the coagulation technique (visual laser ablation of the prostate) had higher reoperation rates (16% versus 0%, p = 0.0199) and were 4 times more likely to have prolonged postoperative urinary retention (25% versus 6.3%, p = 0.0389), evaporation and coagulation. Laser Two-step techniques involving laser desorption/ablation followed by secondary ionization Acoustic Two-step acoustic desorption methods Multimode Multimode techniques involving two of the principles in previous categories Other One-of-a-kind techniques that do not fit into previous categorie Laser sputtering of highly oriented pyrolytic graphite at 248 nm. J. Chem. Phys. 1995, 102, 726-743. Search in Google Scholar [90] Fuchs NA. Evaporation and Droplet Growth in Gaseous Media, Pergamon Press: London, 1959. Search in Google Scholar [91] Anisimov SI. Vaporization of metal absorbing laser radiation. Sov. Phys. JETP 1968, 27, 182-183 HV-PLD - T, Versatile Pulsed Laser Deposition and Thermal Evaporator system HV-PLD - T is a high vacuum thin film deposition system enables to deposit different materials by both Pulsed Laser Deposition and thermal evaporation technique.It can deposit complex materials and crystalline structures onto substrates with very little setup involve