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Government Research Programs- SBIR and STTR

 

Scieval's scientists and engineers actively participate in government small business research and technology transfer programs with the goal of introducing new technologies in the way of innovative products to the commercial marketplace. Our government research has been in areas such as:

  • Communications and Video Imaging

  • Nanotechnologies

  • Chaotic Communication Systems

  • High Energy Lasers and Weapons Systems

  • Beam Directors

  • Passive and Active Targeting, and Distance Measurement Schemes

  • Visible and Infrared Optical Imaging Systems

  • Measurement of Contaminants

  • Encryption Systems

  • Wide Field of View Optical Systems

 
  • Interior and Exterior Lighting

  • In situ Repairs of Advanced Materials Utilizing Lasers and Electric Fields

 

Communications and Video Imaging Technologies

 

Chaotic Communications Systems

Utilizing Field Programmable Logic Devices, Scieval has successfully implemented a chaotic matched filter transmitter and receiver that operates at upper MHz speeds. The technology, which can be employed independently of a signals carrier frequency, can be used to transmit and recover signals in a noisy environment or used to allow transmission frequency changes during a transmission. Additionally, it is highly effective when incorporated with an encryption technology. Scieval is presently developing a chaotic matched filter system which utilizes a quantum key distribution encryption scheme. With intellectual property being developed and submitted to the US Patent and Trademarks, for the base technologies and several key applications, Scieval will be in a key position to manufacture and license the chaotic matched filter system.

Beam Directors

Satellite communications as well as High Energy Lasers (HEL) require the implementation of accurate beam directors. Incorporating both conventional and deformable optical elements (MEMS), as well as micro-actuators utilizing servo technologies to allow for steering as well as jitter control, Scieval has successfully designed and prototyped several advanced beam direction systems. We have prototyped both on axis and off axis systems using both refractive and reflective elements. Systems have been designed for use in the ultraviolet, visible and all three regions of the infrared.

Visible and Infrared Optical Imaging Systems

With Patent Pending technology in ultra low distortion wide field of view optical systems, Scieval has successfully designed and prototyped several concepts in an effort to provide the Navy with an assortment of periscope based capabilities. The systems utilize our extensive polymer and glass molding techniques learned over years of manufacturing commercial based optical systems. Experience gathered at both aerospace and commercial corporations has been the basis for our conventional and MEMS based designs targeted for both LEO (Low Earth Orbit) satellite imagery and FLIR (Forward Looking Infrared) imaging and targeting.

Recent efforts have successfully provided a design for a gun sight overlay. This system utilizes several of our core technologies. The overlay information is provided through a wireless received and imaged directly into to the existing optical path. The user sees the original image as well as the overlay within the same field of view.

Scieval, working with the University of Miami and the University of North Carolina Charlotte, has developed an optical system and algorithm to accurately image object through a turbulent medium (atmosphere or water) and obscurants. A system was successfully designed to prove the accuracy of both the optics and algorithm.

Encryption Systems

ACES™, Scieval's patent pending Advanced Chaotic Encryption System utilizes the unique characteristics of a chaotic waveform to encrypt and embed a message. The ACES™ is over twenty times for efficient than the Advances Encryption Method (AES). Without a priori knowledge of several key components of the system, the message is unrecoverable and will appear as random noise.

Interior and Exterior Lighting

The PLD™, Scieval's patent pending Patterned Light Distribution backlight, is a novel device that has removed the need for turning films and diffusers. The device can be designed to emit light into any required cone angle at a very high efficiency rate.. Normally designed with the source input located on one edge, the PLD™ has been designed into both handheld devices as well as hybrid lighting systems.

A hybrid lighting system utilizes both powered light sources as well as sunlight. Since the light engine can be remote and transferred to the PLD though a fiber optic cable or wave guide, it is safe to operate in any environment. This system has been successfully designed for use in tower lighting, remote tent lighting and enclosed vehicle lighting environments.

Nanotechnologies

Working with University of Rochester's world renown chemistry and optical sciences departments, as well as with US and international commercial corporations, Scieval engineering has been an industry leader in the developmenment of, encapsulation methods and techniques and the testing of down converted nanoparticles used for infrared identification, friend or foe taggants and infrared imaging applications.

High Energy Lasers and Weapons Systems

Scieval has proven proprietary design concepts specifically developed for HEL beam combining as well as for beam propagation methods to minimize flare as well as other effects introduced by the atmosphere.

Passive and Active Targeting, and Distance Measurement Schemes

With a Patent Pending annular optical based proximity sensor, Scieval entered the distance measurement arena with a system that optically measures the position of a sliding door replacing old mechanical limit switches with a system that doesn't rely on moving parts or contacts. This system was initially designed to function at modest distances with great accuracy. Recently, we incorporated another distance measurement method to our growing intellectual property. Passive targeting utilizing a dual camera stereo optical system has been shown to accurately measure the distance to a target and the geometry of that target at distances consistent with land and sea munitions targeting.

A miniature version of the system was designed that can easily be mounted on a helmet or stand that can accurately measure the interlobular distance and papillary read angle allowing for more precise head mounted display (HMD) system design or eye based target acquisition systems.

Measurement of Contaminants

Scieval has an experienced staff with hands-on experience in the use of a broad range of different spectroscopic methods (optical, mechanical, and electrical) for material analysis including Raman Spectroscopy, Ellipsometery, Fourier Transform Infrared Spectroscopy, X-Ray Diffraction, Digital Microscopy, Colorimetry, Polarimetry, Hyperspectral Imaging, Thermal Analysis, Secondary Ion Mass Spectroscopy, Scanning Electron Microscopy, Auger spectroscopy, Time Domain Reflectometry, Differential Capacitance Spectroscopy, and Inductance Spectroscopy.  

In situ Repairs of Advanced Materials Utilizing Lasers and Electric Fields

The use of lasers in industrial and manufacturing environments is very common place today. Laser processing in commercial settings offer solutions for a broad range of processing that include fabricating circuit board vias, making nozzles for ink jet cartridges, paint and coating removal, shock hardening of materials, parts marking, cutting / shaping of materials, and material repair. Scieval has developed practical innovative techniques that support many of these areas including:

 

  1. Femtosecond Laser Assisted Grinding (FLAG) process that uses a laser to uniformly pre-heat the surface of the workpiece prior to application of the grinding wheel in order to improve the rate of material removal and lend better control to the overall process and meet dimensional tolerances and surface finish requirement while minimizing damage to the base metal.


  2. Innovative type of conformal laser head for Deep Reach Annular Patch rEpair (DRAPE) using an annular beam to provide a uniform controlled melt pool of the filler wire material at the point of application where the filler wire material is continuously fed to match the rate of weld wire material loss. The conformal form factor of the laser head accommodates the option of attachment to a 6-axis robotic arm. An   inspection system is mounted into the laser head to closely monitor the laser cladding process and provide feedback to make modifications as required.


  3. A Femtosecond Laser Annular Shock Hardening (FLASH) system using femtosecond laser pulses for minimal heat affected zone (HAZ) effects) and forms an annular beam profile focused onto  the surface of an aluminum workpiece. The fluence is sufficient to initiate explosive vaporization  of a small surface volume ~ 5 nm depth  around the entry face of the fastener hole (a thin  intermediate opaque layer may also be used) that in turn generates a shock wave propagating  down into the bulk material with an annular profile to introduce a controlled amount of cold  working in the aluminum material so that this  area becomes hardened via residual stress to  stop the growth and propagation of micro-cracks.


  4. A novel Advanced Portable Laser Ablation Workstation (APLAW) fluence delivery head to support an ablation workstation incorporating the following capability: (1) fully scalable to    accommodate very broad area applications, (2) allow for high speed stripping operations (estimated process time < 10 minutes for a 12”x12” sample size), (3) packaging to operate both as a hand-held unit or as a robotic arm attachment tool, (4) provides “smart” real time  monitoring and control of the characteristics of the ablation process on the fly based upon feedback from a suite of onboard diagnostics,  (6) rapid fume extraction of volatiles and ablation  products directly away from the area of the workpiece being exposed, (7) provide simultaneous dual wavelength operation with user adjustable temporal delay between the arrival time at the surface of the workpiece of dual pulses, and (8) provide the capability to fully adjust the relative ratio of laser fluence levels on a shot-to-shot basis. As a smart, user configurable, laser assisted repair platform APLAW optimizes material removal rates by adjusting in real time process latitude to respond to the evolving dynamics of the time dependent material optical properties  of the target material being exposed.


  5. A novel Laser Activated Nanosurface Contrast Enhancement (LANCE) process using a femtosecond laser to imprint identifying marks and symbols onto high strength aerospace super alloys by local treatment of the 3D subsurface nanostructure, without degradation in part mechanical integrity, to introduce controlled visual contrast differences between the femtosecond laser irradiated areas and surrounding pristine material. The LANCE process alters the surface phase (i.e. surface termination) between the bulk material and the outside environment. By modifying the local subsurface nano-texture to create observable variations in the optical properties, like reflectivity so that the laser irradiated areas appear darker compared with unexposed material to produce high contrast IUID marks, the LANCE process does no require the use of potentially damaging additive, or extractive, laser marking methods. By virtue of how the femtosecond laser fluence is applied, the LANCE process does not introduce any residual HAZ or introduce mechanical defects that could damage fracture critical parts and greatly shorten life expectancy.


  6. An easy to use, hand held, conformal, compact and robust Portable Active Transfer of   Ceramic sHield (PATCH) repair technology that uses a modified pulsed Laser Induced Forward Transfer (LIFT)   Process with a Dynamic Release Layer (DRL) to apply a ceramic patch onto an area in need of crack repair.

 

Scieval LLC has a world class team of engineers, dedicated to government research programs with expertise in the following areas:

  • Optical Engineering and thin film design, assembly and test

  • Mechanical and Opto-Mechanical Engineering

  • Electrical Engineering, both Analogue and Digital

  • Communications Systems, Waveform Propagation and Chaos Theory

  • Spectroscopy and Materials Science, Nanotechnologies

  • Industrial laser applications and high energy lasers

  • Encryption Schemes, Numerical Analysis and Video Image manipulation

  • Programming in, ZEMAX, OPTICAD, Matlab, Simulink, ISE, Java, C++

 

 

 
 
   
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