公开(公告)号：US09835584B2

公开(公告)日：2017-12-05

申请号：US14744574

申请日：2015-06-19

Applicant: International Business Machines Corporation

Inventor： Shu-Jen Han ,  Keith A. Jenkins

IPC: G01N27/00 ,  G01N27/414 ,  G01N33/00

CPC classification number: G01N27/4141 ,  G01N27/4146 ,  G01N33/0075

Abstract: A method of assembling a remote sensor system to detect a gas or chemical and a remote sensor system are described. The method includes fabricating a sensor, the sensor outputting a sensor signal that changes upon contact of the sensor with the gas or chemical and the sensor having an input port for a clock signal, coupling a capacitor to the sensor, the capacitor output voltage resulting from the sensor signal output by the sensor, and coupling a mixer to the capacitor and a low frequency oscillator, the mixer configured to mix the capacitor output voltage with the low frequency oscillator output to generate an output signal. The method also includes coupling an antenna to the mixer, the antenna configured to transmit the output signal indicating detection of the gas or chemical.

公开(公告)号：US09692397B2

公开(公告)日：2017-06-27

申请号：US14753060

申请日：2015-06-29

Applicant: International Business Machines Corporation

Inventor： Shu-Jen Han ,  Keith A. Jenkins

IPC: G01N27/04 ,  H03K3/03 ,  G01N27/414

CPC classification number: H03K3/0315 ,  G01N27/4148

Abstract: A structure is provided for sensing an analyte in an environment. The structure may include a ring oscillator on a semiconductor substrate, the ring oscillator includes an AND gate, an odd number of inverters, and a carbon device connected in series, the carbon device is exposed to an environment such that a frequency of the ring oscillator changes when the carbon device is exposed to the analyte in the environment.

公开(公告)号：US09660806B2

公开(公告)日：2017-05-23

申请号：US14586103

申请日：2014-12-30

Applicant: International Business Machines Corporation

Inventor： Wilfried Haensch ,  Shu-Jen Han ,  Keith A. Jenkins ,  Dirk Pfeiffer

IPC: H04L9/38 ,  H04L9/08 ,  G09C1/00

CPC classification number: H04L9/0861 ,  G09C1/00 ,  H04L9/0866 ,  H04L2209/12

Abstract: Techniques for use of carbon nanotubes as an anti-tampering feature and for use of randomly metallic or semiconducting carbon nanotubes in the generation of a physically unclonable cryptographic key generation are provided. In one aspect, a cryptographic key having an anti-tampering feature is provided which includes: an array of memory bits oriented along at least one bit line and at least one word line, wherein each of the memory bits comprises a memory cell, wherein the cryptographic key is stored in the memory cell, and wherein the memory cell is connected to the at least one bit line; and a metallic carbon nanotube interconnect which connects the memory cell to the at least one word line. A cryptographic key and method for processing the cryptographic key are also provided.

公开(公告)号：US20170102420A1

公开(公告)日：2017-04-13

申请号：US14881774

申请日：2015-10-13

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Keith A. Jenkins

IPC: G01R29/02 ,  H03K5/13

CPC classification number: G01R29/023 ,  G01R29/0273 ,  H03K5/13 ,  H03K5/133 ,  H03K2005/00019

Abstract: Methods and systems for measuring a duty cycle of a signal include applying a first branch of an input signal directly to a latch. A delay of a second branch of the input signal is incrementally increased, with the second branch being applied to the latch, until the latch changes its output. A delay, corresponding to the latch's changed output, is divided by a period of the input signal to determine a duty cycle of the input signal.

公开(公告)号：US20160377672A1

公开(公告)日：2016-12-29

申请号：US14750748

申请日：2015-06-25

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Keith A. Jenkins ,  Barry Linder

IPC: G01R31/26 ,  G01R31/28

CPC classification number: H01L22/34 ,  G01R31/2642 ,  G01R31/2884

Abstract: Methods and circuits for monitoring circuit degradation include measuring degradation in a plurality of on-chip test oscillators that vary according to a quantity that influences hot carrier injection (HCI) degradation. The measured degradation for the plurality of test oscillators is extrapolated to determine a bias temperature instability (BTI) contribution to the measured degradation. The BTI contribution is subtracted from the measured degradation at a predetermined value of the quantity to determine the HCI degradation for devices represented by the predetermined value.

Abstract translation: 用于监测电路劣化的方法和电路包括测量根据影响热载流子注入（HCI）劣化的量而变化的多个片上测试振荡器的劣化。 外推多个测试振荡器的测量退化，以确定偏压温度不稳定性（BTI）对测量退化的贡献。 在量的预定值处从所测量的劣化中减去BTI贡献，以确定由预定值表示的器件的HCI劣化。

公开(公告)号：US20160377566A1

公开(公告)日：2016-12-29

申请号：US14753060

申请日：2015-06-29

Applicant: International Business Machines Corporation

Inventor： Shu-Jen Han ,  Keith A. Jenkins

IPC: G01N27/04 ,  H03K3/03

CPC classification number: H03K3/0315 ,  G01N27/4148

Abstract: A structure is provided for sensing an analyte in an environment. The structure may include a ring oscillator on a semiconductor substrate, the ring oscillator includes an AND gate, an odd number of inverters, and a carbon device connected in series, the carbon device is exposed to an environment such that a frequency of the ring oscillator changes when the carbon device is exposed to the analyte in the environment.

Abstract translation: 提供了用于感测环境中的分析物的结构。 该结构可以包括半导体衬底上的环形振荡器，环形振荡器包括与门，奇数个反相器和串联连接的碳装置，碳装置暴露于环境振荡器的频率 当碳装置暴露于环境中的分析物时发生变化。

公开(公告)号：US20160313275A1

公开(公告)日：2016-10-27

申请号：US14695205

申请日：2015-04-24

Applicant: International Business Machines Corporation

Inventor： Shu-Jen Han ,  Keith A. Jenkins

IPC: G01N27/414

CPC classification number: G01N27/4141 ,  G01N27/4146 ,  G01N33/0075

Abstract: A method of assembling a remote sensor system to detect a gas or chemical and a remote sensor system are described. The method includes fabricating a sensor, the sensor outputting a sensor signal that changes upon contact of the sensor with the gas or chemical and the sensor having an input port for a clock signal, coupling a capacitor to the sensor, the capacitor output voltage resulting from the sensor signal output by the sensor, and coupling a mixer to the capacitor and a low frequency oscillator, the mixer configured to mix the capacitor output voltage with the low frequency oscillator output to generate an output signal. The method also includes coupling an antenna to the mixer, the antenna configured to transmit the output signal indicating detection of the gas or chemical.

Abstract translation: 描述了组装远程传感器系统以检测气体或化学物质和远程传感器系统的方法。 该方法包括制造传感器，该传感器输出在传感器与气体或化学物质接触时变化的传感器信号，以及传感器具有用于时钟信号的输入端口，将电容器耦合到传感器，电容器输出电压 传感器信号由传感器输出，并将混频器耦合到电容器和低频振荡器，混频器被配置为将电容器输出电压与低频振荡器输出混合以产生输出信号。 该方法还包括将天线耦合到混频器，天线被配置为传送指示气体或化学物质的检测的输出信号。

公开(公告)号：US20150338454A1

公开(公告)日：2015-11-26

申请号：US14602544

申请日：2015-01-22

Applicant: International Business Machines Corporation

Inventor： Keith A. Jenkins ,  Barry P. Linder ,  Kevin G. Stawiasz

IPC: G01R31/26

CPC classification number: G01R31/2853 ,  G01R31/026 ,  G01R31/2856 ,  G01R31/2858 ,  G06F11/00 ,  H01L22/34

Abstract: A test structure and method to detect open circuits due to electromigration or burn-out in test wires and inter-level vias. Electromigration occurs when current flows through circuit wires leading to a circuit interruption within the wire. The test structure is a passive test wire arranged in one of several configurations within the circuit of a computer chip. The dimensions and resistances of test wires can vary according to the test structure configuration. Each test wire is measured for an electrical discontinuity after the computer chip is powered-on. If a wiring interruption is detected, it is concluded that the chip had been powered-on before.

Abstract translation: 一种用于检测测试线和级间通孔中的电迁移或烧坏的开路的测试结构和方法。 当电流流过导线中的电路中断的电路线时，会发生电迁移。 测试结构是在计算机芯片的电路内布置成若干配置之一的被动测试线。 测试线的尺寸和电阻可以根据测试结构配置而变化。 在计算机芯片上电后，测量每根测试线的电气不连续性。 如果检测到接线中断，则可以断定芯片已经上电。