Abstract:
Calixarene-based, noncentrosymmetric transition metal complexes that exhibit large second order nonlinear optical and related electro-optical properties are provided, as are materials and devices comprising the same.
Abstract:
A backside alignment apparatus and method for determining a position relationship between a substrate (6) and a workpiece stage (24). The backside alignment apparatus includes: an illumination apparatus (1) for emanating infrared light; a workpiece stage assembly (2) for supporting and moving the substrate (6); an imaging apparatus (3) for detecting alignment marks and calculating positions of the alignment marks, the alignment marks including a reference plate alignment mark (41) and a backside alignment mark (20); and a reference plate assembly (4) for setting up a relationship between position coordinates of the imaging apparatus (3) and the workpiece stage assembly (2). The illumination apparatus (1) and the imaging apparatus (3) are able to illuminate and align different alignment marks using only one set of illumination apparatus.
Abstract:
A method includes increasing EXPA1 gene expression or increasing the activity of EXPA1 polypeptide to produce a plant with an improved trait. The method may further include increasing the expression of RDL1 gene or the activity of RDL1 kpolypeptide. expression of GhRDL1 and GhEXPA1 Co-expression of EXPA1 and RDL genes can improve plant traits. These methods have applications in crops and flower productions.
Abstract:
In accordance with some embodiments of the present disclosure, a control path for a wireless communication device may include a radio frequency coupler having a coupled port and a terminated port, the radio frequency coupler configured to couple at least a portion of a transmission power of a transmission line coupled to the antenna tuner such that the coupled port carries a first signal indicative of an incident power transmitted to an antenna coupled to the antenna tuner and the terminated port carries a second signal indicative of a reflected power reflected by the antenna. the control path may also include a control module configured to communicate the one or more control signals to the antenna tuner for controlling the impedance of the antenna tuner based at least on the first signal and the second signal.
Abstract:
In accordance with the present disclosure, disadvantages and problems associated with timing accuracies of higher data rate communications systems may be reduced. In accordance with one embodiment of the present disclosure a wireless communication element comprises a first controller configured to generate data transfer information indicating a trigger value. The wireless communication element further comprises a second controller communicatively coupled to the first controller. The second controller comprises a counter configured to increment a counter value and is configured to receive the data transfer information from the first controller. The second controller is further configured to generate a data transfer trigger when the counter value corresponds with the trigger value such that the wireless communication element initiates a data transfer with a second wireless communication element in response to the data transfer trigger.
Abstract:
Disclosed are nucleopeptide compounds that include a nucleobase, and an amino acid. Certain compounds further comprise a glycoside. The compounds may self-assemble to form supramolecular hydrogels. Also, the compounds may be used as a platform to examine specific biological functions (e.g., binding to DNA and RNA) of a dynamic supramolecular system that is able to interact with both proteins and nucleic acids. Other uses include: methods of growing cells and methods of delivering a substance to a cell.
Abstract:
Optical pump modules using VCSEL arrays are provided to pump optical gain media for achieving high power laser output in CW, QCW and pulse operation modes for operation. Low divergence and symmetric far-field emission from VCSELs are particularly suitable for compact arrays. VCSEL arrays configured as laser pump modules are operable at high temperatures with practically no degradation over a long period of time. VCSEL pump modules are adaptable for side- or end-pumping configurations to pump high power lasers in CW, QCW and pulse mode. Power output from VCSEL pump modules is scalable. Incorporating microlens arrays with the VCSEL arrays improve brightness of the pump modules. High power and high temperature operation of VCSEL modules make it suitable for making compact high power solid state lasers that are operable in small spaces such as, ignition of internal combustion engines, stationary power generation engines and pulsed detonation engines.
Abstract:
A technique for performing adaptive predistortion in a transmitter includes receiving, at a first input of an error signal unit, a delayed version of a baseband input signal. The technique also includes receiving, at a second input of the error signal unit, a power amplifier feedback signal from an output of a power amplifier. An input error signal that corresponds to a difference between the delayed version of the baseband input signal and the power amplifier feedback signal is then provided at an output of the error signal unit. The input error signal is then received at an input of a signal conditioner. An adjusted error signal that has a lower direct current offset than the input error signal is provided at an output of the signal conditioner.
Abstract:
Embodiments include methods and apparatus for performing transmit power control. A gain application element receives a sequence of digital input samples and a digital gain signal, and combines the digital gain signal with the digital input samples to generate a sequence of gain-compensated digital samples. A power amplifier receives and amplifies an analog version of the gain-compensated digital samples in order to generate an antenna output signal. A feedback path generates an analog feedback signal from the antenna output signal, produces a sequence of digital feedback samples from the analog feedback signal, and generates difference values based on the digital feedback samples. When a specified type of constant modulus symbol is represented in the antenna output symbol, the feedback path accumulates the difference values into an accumulated error value, and produces the digital gain signal from the accumulated error value.
Abstract:
A method is described for treating fabrics, yarns and individual fibers to improve the mechanical properties thereof, for example their wrinkle-resistance, by treating the fabric, yarn, and fibers in a solution containing polymer nanoparticles. The nanoparticles include two sizes of particles and an appropriate selection of the nanoparticles to control the degree and mode of cross-linking in the fabric with corresponding control of the mechanical properties. The nanoparticles can be provided with an electrical charge that can be opposite in sign to any charge carried by the fabric in order to enhance the formation of a polymer film on the fabric.